期刊文献+
共找到4,371篇文章
< 1 2 219 >
每页显示 20 50 100
High-strain dynamic model of large-diameter pipe piles with soil plug for vertical vibration analysis
1
作者 Yuan Tu M.H.El Naggar +2 位作者 Kuihua Wang Wenbing Wu Minjie Wen 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2024年第11期4440-4461,共22页
A rigorous analytical model is developed for simulating the vibration behaviors of large-diameter openended pipe piles(OEPPs)and surrounding soil undergoing high-strain impact loading.To describe the soil behavior,the... A rigorous analytical model is developed for simulating the vibration behaviors of large-diameter openended pipe piles(OEPPs)and surrounding soil undergoing high-strain impact loading.To describe the soil behavior,the soil along pile shaft is divided into slip and nonslip zones and the base soil is modeled as a fictitious-soil pile(FSP)to account for the wave propagation in the soil.True soil properties are adopted and slippage at the pile-soil interface is considered,allowing realistic representation of largediameter OEPP mechanics.The developed model is validated by comparing with conventional models and finite element method(FEM).It is further used to successfully simulate and interpret the behaviors of a steel OEPP during the offshore field test.It is found that the variation in the vertical vibrations of shaft soil along radial direction is significant for large-diameter OEPPs,and the velocity amplitudes of the internal and external soil attenuate following different patterns.The shaft soil motion may not attenuate with depth due to the soil slippage,while the wave attenuation at base soil indicates an influence depth,with a faster attenuation rate than that in the pile.The findings from the current study should aid in simulating the vibration behaviors of large-diameter OEPP-soil system under high-strain dynamic loading. 展开更多
关键词 Fictitious-soil pile Large-diameter pipe piles Soil plug pile vibration Elastic wave propagation High-strain dynamic analysis
下载PDF
Longitudinal vibration characteristics of a tapered pipe pile considering the vertical support of surrounding soil and construction disturbance
2
作者 Li Zhenya Pan Yunchao +2 位作者 He Xianbin Lv Chong Mohammad Towhid 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2024年第1期51-63,共13页
This research is concentrated on the longitudinal vibration of a tapered pipe pile considering the vertical support of the surrounding soil and construction disturbance.First,the pile-soil system is partitioned into f... This research is concentrated on the longitudinal vibration of a tapered pipe pile considering the vertical support of the surrounding soil and construction disturbance.First,the pile-soil system is partitioned into finite segments in the vertical direction and the Voigt model is applied to simulate the vertical support of the surrounding soil acting on the pile segment.The surrounding soil is divided into finite ring-shaped zones in the radial direction to consider the construction disturbance.Then,the shear complex stiffness at the pile-soil interface is derived by solving the dynamic equilibrium equation for the soil from the outermost to innermost zone.The displacement impedance at the top of an arbitrary pile segment is obtained by solving the dynamic equilibrium equation for the pile and is combined with the vertical support of the surrounding soil to derive the displacement impedance at the bottom of the upper adjacent segment.Further,the displacement impedance at the pile head is obtained based on the impedance function transfer technique.Finally,the reliability of the proposed solution is verified,followed by a sensitivity analysis concerning the coupling effect of the pile parameters,construction disturbance and the vertical support of the surrounding soil on the displacement impedance of the pile. 展开更多
关键词 tapered pipe pile longitudinal vibration vertical support of the surrounding soil construction disturbance displacement impedance
下载PDF
Pre-Stressed Rope Reinforced Anti-Sliding Pile 被引量:1
3
作者 XU Jun WANG Chenghua 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第4期887-891,共5页
Pre-stressed rope reinforced anti-sliding pile is a composite anti-sliding structure. It is made up of pre-stressed rope and general anti-sliding pile. It can bring traditional anti-sliding pile's retaining performan... Pre-stressed rope reinforced anti-sliding pile is a composite anti-sliding structure. It is made up of pre-stressed rope and general anti-sliding pile. It can bring traditional anti-sliding pile's retaining performance into full play, and to treat with landslide fast and economically. The difference between them is that the pre-stressed rope will transfix the whole anti- sliding pile through a prearranged pipe in this structure. The working mechanics, the design method and economic benefit are studied. The results show that the pre-stressed rope reinforced anti-sliding pile can treat with the small and middle landslides or high slopes well and possess the notable advantage of technology and economic. 展开更多
关键词 pre-stressed rope anti-sliding pile composite anti-sliding structure
下载PDF
Physical modelling of pipe piles under oblique pullout loads using transparent soil and particle image velocimetry 被引量:6
4
作者 曹兆虎 刘汉龙 +1 位作者 孔纲强 周航 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第11期4329-4336,共8页
A small-scale physical modelling method was developed to investigate the pile bearing capacity and the soil displacement around the pile using transparent soil and particle image velocimetry(PIV) technique. Transparen... A small-scale physical modelling method was developed to investigate the pile bearing capacity and the soil displacement around the pile using transparent soil and particle image velocimetry(PIV) technique. Transparent sand was made of baked quartz and a pore fluid with a matching refractive index. The physical modelling system consists of a loading system, a laser light, a CCD camera, an optical platform and a computer for image analyzing. A distinctive laser speckle was generated by the interaction between the laser light and transparent soil. Two laser speckle images before and after deformation were used to calculate the soil displacement field using PIV. Two pipe piles with different diameters under oblique pullout loads at angles of 0°, 30°, 45°, 60° and 90° were used in tests. The load-displacement response, oblique pullout ultimate resistances and soil displacement fields were then studied. The test results show that the developed physical modelling method and transparent soil are suitable for pile-soil interaction problems. The soil displacements around the pipe piles will improve the understanding on the capacity of pipe piles under oblique pullout loads. 展开更多
关键词 pipe pileS TRANSPARENT SOIL particle image velocim
下载PDF
Time-domain solution for transient dynamic response of a large-diameter thin-walled pipe pile 被引量:8
5
作者 Ding Xuanming Liu Hanlong +1 位作者 Chu Jian Cheng Ke 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2015年第2期239-251,共13页
The propagation of stress waves in a large-diameter pipe pile for low strain dynamic testing cannot be explained properly by traditional 1D wave theories. A new computational model is established to obtain a wave equa... The propagation of stress waves in a large-diameter pipe pile for low strain dynamic testing cannot be explained properly by traditional 1D wave theories. A new computational model is established to obtain a wave equation that can describe the dynamic response of a large-diameter thin-walled pipe pile to a transient point load during a low strain integrity test. An analytical solution in the time domain is deduced using the separation of variables and variation of constant methods. The validity of this new solution is verifi ed by an existing analytical solution under free boundary conditions. The results of this time domain solution are also compared with the results of a frequency domain solution and fi eld test data. The comparisons indicate that the new solution agrees well with the results of previous solutions. Parametric studies using the new solution with reference to a case study are also carried out. The results show that the mode number affects the accuracy of the dynamic response. A mode number greater than 10 is required to enable the calculated dynamic responses to be independent of the mode number. The dynamic response is also greatly affected by soil properties. The larger the side resistance, the smaller the displacement response and the smaller the refl ected velocity wave crest. The displacement increases as the stress waves propagate along the pile when the pile shaft is free. The incident waves of displacement and velocity responses of the pile are not the same among different points in the circumferential direction on the pile top. However, the arrival time and peak value of the pile tip refl ected waves are almost the same among different points on the pile top. 展开更多
关键词 pipe pile transient load analytical solution time
下载PDF
Torsional vibration of a pipe pile in transversely isotropic saturated soil 被引量:8
6
作者 Zheng Changjie Hua Jianmin Ding Xuanming 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2016年第3期509-517,共9页
This study considers the torsional vibration of a pipe pile in a transversely isotropic saturated soil layer. Based on Biot's poroelastic theory and the constitutive relations of the transversely isotropic medium, th... This study considers the torsional vibration of a pipe pile in a transversely isotropic saturated soil layer. Based on Biot's poroelastic theory and the constitutive relations of the transversely isotropic medium, the dynamic governing equations of the outer and inner transversely isotropic saturated soil layers are derived. The Laplace transform is used to solve the governing equations of the outer and inner soil layers. The dynamic torsional response of the pipe pile in the frequency domain is derived utilizing 1D elastic theory and the continuous conditions at the interfaces between the pipe pile and the soils. The time domain solution is obtained by Fourier inverse transform. A parametric study is conducted to demonstrate the influence of the anisotropies of the outer and inner soil on the torsional dynamic response of the pipe pile. 展开更多
关键词 torsional vibration saturated soil pipe pile transversely isotropic medium
下载PDF
Vertical vibration of a large diameter pipe pile considering transverse inertia effect of pile 被引量:9
7
作者 郑长杰 刘汉龙 +1 位作者 丁选明 周航 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第4期891-897,共7页
Considering the transverse inertia effect of pile, the vertical soil layer is studied. The wave propagations in the outer and inner soil dynamic response of a large diameter pipe pile in viscoelastic are simulated by ... Considering the transverse inertia effect of pile, the vertical soil layer is studied. The wave propagations in the outer and inner soil dynamic response of a large diameter pipe pile in viscoelastic are simulated by three-dimensional elastodynamic theory and those in the pile are simulated by Rayleigh-Love rod theory. The vertical and radial displacements of the outer and inner soil are obtained by utilizing Laplace transform technique and differentiation on the governing equations of soils. Then, based on the continuous conditions between the pile and soils, the displacements of the pile are derived. The frequency domain velocity admittance and time domain velocity response of the pile top are also presented. The solution is compared to a classical rod model solution to verify the validity. The influences of the radii and Poisson ratio of pile on the transverse inertia effect of pile are analyzed. The parametric study shows that Poisson ratio and outer radius of pile have significant influence on the transverse inertia effect of large diameter pipe piles, while the inner radius has little effect. 展开更多
关键词 large diameter pipe pile vertical vibration Rayleigh-Love rod transverse inertia effect
下载PDF
A theoretical analysis of vertical dynamic response of large-diameter pipe piles in layered soil 被引量:5
8
作者 丁选明 郑长杰 刘汉龙 《Journal of Central South University》 SCIE EI CAS 2014年第8期3327-3337,共11页
Considering the viscous damping of the soil and soil-pile vertical coupled vibration,a computational model of large-diameter pipe pile in layered soil was established.The analytical solution in frequency domain was de... Considering the viscous damping of the soil and soil-pile vertical coupled vibration,a computational model of large-diameter pipe pile in layered soil was established.The analytical solution in frequency domain was derived by Laplace transformation method.The responses in time domain were obtained by inverse Fourier transformation.The results of the analytical solution proposed agree well with the solutions in homogenous soil.The effects of the shear modulus and damping coefficients of the soil at both outer and inner sides of the pipe pile were researched.The results indicate that the shear modulus of the outer soil has more influence on velocity admittance than the inner soil.The smaller the shear modulus,the larger the amplitude of velocity admittance.The velocity admittance weakened by the damping of the outer soil is more obvious than that weakened by the damping of the inner soil.The displacements of the piles with the same damping coefficients of the outer soil have less difference.Moreover,the effects of the distribution of soil layers are analyzed.The results indicate that the effect of the upper soil layer on dynamic response of the pipe pile is more obvious than that of the bottom soil layer.A larger damping coefficient of the upper layer results in a smaller velocity admittance.The dynamic response of the pipe pile in layered soil is close to that of the pipe pile in homogenous soil when the properties of the upper soil layer are the same. 展开更多
关键词 dynamic response large-diameter pipe pile layered soil velocity admittance dynamic stiffness
下载PDF
A Theoretical Analysis of the Bearing Performance of Vertically Loaded Large-Diameter Pipe Pile Groups 被引量:3
9
作者 DING Xuanming ZHANG Ting +1 位作者 LI Ping CHENG Ke 《Journal of Ocean University of China》 SCIE CAS 2016年第1期57-68,共12页
This paper aims to present a theoretical method to study the bearing performance of vertically loaded large-diameter pipe pile groups.The interactions between group piles result in different bearing performance of bot... This paper aims to present a theoretical method to study the bearing performance of vertically loaded large-diameter pipe pile groups.The interactions between group piles result in different bearing performance of both a single pile and pile groups.Considering the pile group effect and the skin friction from both outer and inner soils,an analytical solution is developed to calculate the settlement and axial force in large-diameter pipe pile groups.The analytical solution was verified by centrifuge and field testing results.An extensive parametric analysis was performed to study the bearing performance of the pipe pile groups.The results reveal that the axial forces in group piles are not the same.The larger the distance from central pile,the larger the axial force.The axial force in the central pile is the smallest,while that in corner piles is the largest.The axial force on the top of the corner piles decreases while that in the central pile increases with increasing of pile spacing and decreasing of pile length.The axial force in side piles varies little with the variations of pile spacing,pile length,and shear modulus of the soil and is approximately equal to the average load shared by one pile.For a pile group,the larger the pile length is,the larger the influence radius is.As a result,the pile group effect is more apparent for a larger pile length.The settlement of pile groups decreases with increasing of the pile number in the group and the shear modulus of the underlying soil. 展开更多
关键词 pile group effect bearing performance large-diameter pipe pile SETTLEMENT rigid foundation
下载PDF
Horizontal dynamic response of a large-diameter pipe pile considering the second-order effect of axial force 被引量:2
10
作者 Luan Lubao Ding Xuanming +2 位作者 Zhou Wei Zheng Changjie Qu Liming 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2018年第3期567-579,共13页
The second-order effect of axial force on horizontal vibrating characteristics of a large-diameter pipe pile is theoretically investigated.Governing equations of the pile-soil system are established based on elastodyn... The second-order effect of axial force on horizontal vibrating characteristics of a large-diameter pipe pile is theoretically investigated.Governing equations of the pile-soil system are established based on elastodynamics.Threedimensional wave equations of soil are decoupled through differential transformation and variable separation.Consequently,expressions of soil displacements and horizontal resistances can be obtained.An analytical solution of the pile is derived based on continuity conditions between the pile and soil,subsequently from which expressions of the complex impedances are deduced.Analyses are carried out to examine the second-order effect of axial force on the horizontal vibrating behavior of the pipe pile.Some conclusions can be summarized as follows: stiffness and damping factors are decreased with the application of axial force on the pile head; distributions of the pile horizontal displacement and rotation angle are regenerated due to the second-order effect of the applied axial force; and redistributions of the bending moment and shearing force occur due to the second-order effect of the applied axial force. 展开更多
关键词 axial force second-order effect horizontal vibration pipe pile analytical solution
下载PDF
Effect of Sacrificial Anode Protection for Steel Pipe Piles at Dandong Port 被引量:1
11
作者 Zhu, XC Ge, Y Ge, RG 《China Ocean Engineering》 SCIE EI 1998年第1期113-120,共8页
The sacrificial anode protection system for the steel pipe piles of the 3rd berth of Dandong; wharf at Dandong port has operated for eight years. In this paper, the program design and the protection effect of the sacr... The sacrificial anode protection system for the steel pipe piles of the 3rd berth of Dandong; wharf at Dandong port has operated for eight years. In this paper, the program design and the protection effect of the sacrificial anode protection system are presented. The results of various inspections show that the piles are protected very satisfactorily. 展开更多
关键词 steel pipe pile CORROSION sacrificial anode cathodic protection protection potential protection percentage
下载PDF
Research on technology of automatic welding machine and procedure for pile pipes of offshore jacket platform 被引量:3
12
作者 Tang Deyu Feng Biao Li Chunrun Niu Huli Zhang Jianhu Long Bin Sun Bo 《Engineering Sciences》 EI 2010年第2期24-30,43,共8页
Because of the high requirement of quality,vile working environment and great difficulty of automatic welding,MMAW is usually adopted for the welding of the platform jacket and the pile pipe.Its low efficiency and har... Because of the high requirement of quality,vile working environment and great difficulty of automatic welding,MMAW is usually adopted for the welding of the platform jacket and the pile pipe.Its low efficiency and hard working is one of the choke points for construction progress. In this article,an up-to-date technology for platform pile pipe welding was introduced. Cored with FCW-S and combined with the characters and requirements of platform construction,the special automatic horizontal welding equipment and process were developed. Further more,the offshore application were introduced too. 展开更多
关键词 OFFSHORE jacket platform pile pipe automatic welding PLC
下载PDF
Characteristics and Construction Technology Analysis of Static Pressure Prestressed Pipe Piles in Construction Engineering 被引量:1
13
作者 Wu Cuipeng 《Journal of Architectural Research and Development》 2018年第3期55-58,共4页
The development of urbanization has led to an increase in the number and scale of construction projects and the types of building construction engineering are getting advance and diverse due to the rapid development o... The development of urbanization has led to an increase in the number and scale of construction projects and the types of building construction engineering are getting advance and diverse due to the rapid development of technology.One of them is the static pressure prestressed pipe pile which is the most commonly used technology in modern building construction work.It is mainly used for pile foundation in construction work,and it has the advantages in less pollution,low noise,and high efficiency compared to the traditional pile foundation.Study on the characteristics of static pressure prestressed pipe pile must be carried out and strengthened the research to increase the effectiveness and quality of static pressure prestressed pipe pile on construction works.This paper is mainly to analyzed the characteristic and construction technology of static pressure prestressed pipe piles on building construction work. 展开更多
关键词 building CONSTRUCTION WORK STATIC pressure PRESTRESSED pipe pile characteristic CONSTRUCTION WORK technology
下载PDF
Field load testing of copper extraction aeration pipes under simulated high heap pile
14
作者 Shad M.Sargand Teruhisa Masada Jim Goddard 《International Journal of Mining Science and Technology》 SCIE EI 2013年第5期751-756,共6页
Recently a research team at Ohio University,USA,conducted a unique full-scale feld load test to simulate the aeration pipe installations at a copper extraction mine operated in Chile.The overliner material taken from ... Recently a research team at Ohio University,USA,conducted a unique full-scale feld load test to simulate the aeration pipe installations at a copper extraction mine operated in Chile.The overliner material taken from the mine was used in recreating the in situ conditions.Electric heaters were utilized to raise the temperature inside each pipe to simulate the essential element of the copper extraction process.The maximum vertical deflection reached by the test pipes was close to 20%,when the simulated heap pile height was 80 m.The plastic pipes and the overliner material were also tested in the laboratory.Based on the results,the maximum heap pile fll depth was recommended for the aeration system.The results indicated that the vertical deflection was the primary performance index for the aeration pipes installed in heap piles at mines.Lastly,the pipe made of polypropylene resin was super. 展开更多
关键词 Copper extraction Aeration pipe Heap pile Field load test Laboratory testing
下载PDF
Study on the squeezing effect of open-ended pipe piles
15
作者 Yan-er Lu1,Jun-jie Zheng1,Jian-hua Yin21.Institute of Geotechnical and Underground Engineering,Huazhong University of Science and Technology,Wuhan 430074,China 2.Department of Civil and Structural Engineering,the Hong Kong Polytechnic University,Hong Kong,China. 《Journal of Pharmaceutical Analysis》 SCIE CAS 2009年第3期155-159,171,共6页
During the installation of a pipe pile,the soil around the pile will be squeezed out. This paper deals with this squeezing effect of open-ended pipe piles using the cylindrical cavity expansion theory. The characteris... During the installation of a pipe pile,the soil around the pile will be squeezed out. This paper deals with this squeezing effect of open-ended pipe piles using the cylindrical cavity expansion theory. The characteristics of soil with different tension and compression moduli and dilation are involved by applying the elastic theory with different moduli and logarithmic strain. The closed-form solutions of the radius of the plastic region,the displacement of the boundary between the plastic region and the elastic region and the expansion pressure on the external surface of the pipe piles are obtained. When obtaining these solutions,the soil plug in the open-ended pipe pile is considered by employing an incremental filling ratio to quantify the degree of soil plugging. Moreover,the effects of the ratio of tension and compression moduli,angle of dilation and incremental filling ratio on the radius of the plastic region and the expansion pressure on the external surface of the pipe pile are investigated. The parametric analyses show that it is necessary and important to consider the difference between the tension modulus and compression modulus,dilation angle and incremental filling ratio for studying the squeezing effect of open-ended pipe pile installation. It is concluded that the analytical solutions presented in this paper are suitable for studying the squeezing effect of open-ended pipe piles. 展开更多
关键词 open-ended pipe pile squeezing effect ratio of tension and compression moduli incremental filling ratio
下载PDF
Experiments of Multi-element Composite Foundation with Steel Pipe Pile and Gravel Pile
16
作者 王仙芝 郑俊杰 《Journal of Southwest Jiaotong University(English Edition)》 2008年第3期254-259,共6页
A set of serf-developed apparatus for foundation physical model were utilized to conduct model tests of the multi-element composite foundation with a steel pipe pile and several gravel piles. Some load-bearing charact... A set of serf-developed apparatus for foundation physical model were utilized to conduct model tests of the multi-element composite foundation with a steel pipe pile and several gravel piles. Some load-bearing characteristics of the multi-element Composite foundation, including the curves of foundation settlement, stresses of piles, pile-soil stress ratio, and load-sharing ratio of piles and soil, were obtained to study its working performances in silty sand soil. The experimental results revealed that the multi-element composite foundation with steel pipe pile and gravel pile contributed more than the gravel pile composite foundation in improving the bearing capacity of the silty fine sand. 展开更多
关键词 Steel pipe pile Gravel pile Model test Multi-element composite foundation pile-soil stress ratio Load-sharing ratio
下载PDF
Leachate Control Technology Using H-Jointed Steel Pipe Sheet Piles with H-H Joints at Coastal Landfills
17
作者 S. Inazumi M. Kimura +1 位作者 Y. Nishiyama K. Kojima 《Journal of Environmental Science and Engineering》 2010年第11期65-70,共6页
H-H joint of "H-jointed SPSP with H-H joint", which is made up of interlocking two H-steel sections of different sizes, is the one of SPSP's joint to improve the hydraulic conductivity. "H-H jointed SPSP with H-H ... H-H joint of "H-jointed SPSP with H-H joint", which is made up of interlocking two H-steel sections of different sizes, is the one of SPSP's joint to improve the hydraulic conductivity. "H-H jointed SPSP with H-H joint" is expected to be applied to a vertical cutoff wall in coastal landfill sites. In H-jointed SPSP with H-H joint, the H-joint is completely imperviousness. H-H joint, however, is pervious at interlocked state because a gap of 8 to 11 mm is left between the interlocking flanges, therefore, a water interception treatment must be conducted to seal the gap. The water shielding treatment of H-H joint is executed by coating the gaps with a water-swelling sheet of paint before its installation. Then, hollow space is generated in H-H joint after treating by water-swelling sheet, and that space can be used effectively. This paper proposes leachate control technologies using H-H joint interior space of SPSP cutoff walls. The possibility of those technologies and hydraulic conductivity of H-jointed SPSP with H-H joints are demonstrated by conducting the hydraulic conductivity test. 展开更多
关键词 H-H joint H-jointed steel pipe sheet pile hydraulic conductivity.
下载PDF
Case History Based on Jacked Steel Pipe Piles to Rectify Inclined Buildings
18
作者 Hailei Kou Mingyi Zhang 《建筑工程(中英文版)》 2014年第1期15-19,共5页
关键词 静压钢管桩 建筑历史 案例 螺旋装置 侧向约束 承载能力 水平裂缝 建筑物
下载PDF
The Effective Buckling Length on Numerical Study of Pipe-Sectioned Pier-Pile Integral Steel Structure
19
作者 Takayuki Omori Akira Kasai Rei Kohara 《Open Journal of Earthquake Research》 2017年第4期159-167,共9页
Pier-Pile integral structures provide construction works with many environmental and landscape advantages. For example, the space required to construct these structures is smaller than that of other bridges due to the... Pier-Pile integral structures provide construction works with many environmental and landscape advantages. For example, the space required to construct these structures is smaller than that of other bridges due to the footing being removed, meaning that it is not necessity to greatly change the surroundings of these bridges. While there are environmental and landscape advantages, there are also a few demerits for the overall land-scape designs, including demerits in the design of this proposed structure which consists of relatively slender parts. This proposed structure has already been constructed in areas where possibility of a severe earthquake is low. However, some problems that have yet to be examined are related to the use of this proposed structure in areas where earthquakes are frequent. Lacking detailed studies of its behavior during severe earthquakes, it is currently difficult to construct these structures in Japan. Consequently, it is necessary to investigate in detail limited performance about compression and bending moment, and earthquake- resistant performance of these structures in order to resolve these problems. In this paper, It was clarified the relationship between the rigidity of the ground and the effective buckling length by buckling analysis and elasto- plastic finite deformation analysis. Moreover, it was proposed a simplified formula using a proposed characteristic value β and several factors for analysis accuracy. A simplified formula would support to determine the effective buckling length to design the pier using the load-bearing capacity curve based on the slenderness ratio parameter. 展开更多
关键词 Pire-pile INTEGRAL Steel Structures EFFECTIVE BUCKLING LENGTH pipe Section
下载PDF
管桩竖向裂缝发生机理及防治措施综述 被引量:2
20
作者 孙超 汪鹏 郭浩天 《科学技术与工程》 北大核心 2024年第2期455-464,共10页
管桩因承载力高、稳定性强等优点得到了广泛应用,而在各领域服役过程中出现了竖向裂缝问题。为充分阐明管桩竖向裂缝产生的原因,并基于裂缝产生机理提供有效防治措施,提高管桩在不同环境下的使用寿命,解决由管桩开裂产生的各种工程问题... 管桩因承载力高、稳定性强等优点得到了广泛应用,而在各领域服役过程中出现了竖向裂缝问题。为充分阐明管桩竖向裂缝产生的原因,并基于裂缝产生机理提供有效防治措施,提高管桩在不同环境下的使用寿命,解决由管桩开裂产生的各种工程问题。通过总结分析现有研究成果,对不同使用领域的管桩竖向裂缝的产生机理、裂缝危害、裂缝防治措施及裂缝检测技术进行综述,为管桩工程裂缝处理提供参考。 展开更多
关键词 管桩 竖向裂缝 机理 防治 综述
下载PDF
上一页 1 2 219 下一页 到第
使用帮助 返回顶部