期刊文献+
共找到9篇文章
< 1 >
每页显示 20 50 100
三等以下水准测量及中桩加桩程序的移植
1
作者 林小红 《甘肃水利水电技术》 2001年第2期120-122,共3页
简述了将PC 150 0微型计算机编写的三等以下水准测量及中桩加桩程序移植到PCE50 0微型计算机的可能性和现实性 ,并对移植后的程序在水利和公路工程测量中的特点及应用做了简要说明。
关键词 水准测量 程序 移植 水利工程
下载PDF
三等以下水准测量及中桩加桩程序的移植
2
作者 何振群 《甘肃农业》 2003年第9期48-49,共2页
本文简述了将PC 1500微型计算机编写的三等以下水准测量及中桩加桩程序移植到PC E500微型计算机的可能性和现实性,并对移植后的程序在水利和公路工程测量中的特点和应用做了简要的说明。
关键词 水准测量 程序移植 PC1500微型计算机 水利工程 公路工程
下载PDF
CASIO fx-4800p编程计算路线中桩及边桩坐标
3
作者 齐兴强 《山西建筑》 2006年第14期352-353,共2页
结合工程实践利用CASIO fx-4800p计算器编程计算任意桩号路基中桩及边桩坐标,列出了详细源程序及计算规定,并提供了算例,以方便施工测量。
关键词 CASIO FX-4800P 坐标计算
下载PDF
浅水导管架拒锤后的安装工艺
4
作者 惠丹 王进 《船舶标准化工程师》 2014年第2期22-24,40,共4页
以蓬莱19-3项目WHP-E导管架的安装作为例,描述了浅水导管架在拒锤后的安装所需装备、关键技术和主要工艺过程,为后续浅水导管架在出现拒锤后而采取相关的措施提供了借鉴。
关键词 停锤 拒锤 取土塞 桩中桩
下载PDF
Model test on vertical bearing capacity of X-section concrete pile raft foundation in silica sand 被引量:3
5
作者 XU Lai PENG Yu +1 位作者 DING Xuan-ming LIU Jia-yi 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第6期1861-1869,共9页
To reveal the bearing capacity of the X-section concrete piles pile raft foundation in silica sand,a series of vertical load tests are carried out.The X-section concrete piles are compared with circular section pile w... To reveal the bearing capacity of the X-section concrete piles pile raft foundation in silica sand,a series of vertical load tests are carried out.The X-section concrete piles are compared with circular section pile with the same section area.The load−settlement curves,axial force and skin friction,strain on concave and convex edge of the pile,pile-sand stress ratio,distributions of side and tip resistance are presented.The results show that bearing capacity of the X section concrete pile raft foundation is much larger than that of the circular pile raft foundation.Besides,compared with the circular pile,the peak axial force of X-section piles under raft is deeper and smaller while the neutral point of X-section concrete pile is deeper.Moreover,the strain on the concave edge is much larger than that on the convex edge of the pile,and the convex edge has more potential in bearing capacity as the vertical load increases.The X-section pile has higher pile-sand stress ratios and load-sharing between side resistance and tip resistance.Above all,the X-section concrete pile can significantly increase the bearing capacity of pile-raft foundations in silica sand. 展开更多
关键词 X-section pile pile raft foundation model test neutral point pile-soil stress ratio
下载PDF
Ultimate end bearing capacity of rock-socketed pile based on generalized nonlinear unified strength criterion 被引量:7
6
作者 章敏 王星华 汪优 《Journal of Central South University》 SCIE EI CAS 2011年第1期208-215,共8页
In order to study the mechanism of bearing behavior at the tip of a pile embedded in rock, the generalized nonlinear unified strength criterion and slip line principle for resolving the differential equation systems w... In order to study the mechanism of bearing behavior at the tip of a pile embedded in rock, the generalized nonlinear unified strength criterion and slip line principle for resolving the differential equation systems which govern the stress field were applied to derive the ultimate end beating capacity based on some reasonable hypothesis and failure plane model. Both numerical simulation and test results were compared with the theoretic solution. The results show good consistency with each other and verify the validity of the present approach. The depth effect with respective to embedment ratio and other influence factors like geological strength index, intermediate principal stress, overburden factor, and damage on end bearing capacity were discussed in the analytical solution. The results show that the proposed yield criterion can be much better for investigating the ultimate end bearing performance of rock-socketed pile. The end bearing capacity increases with embedment ratio and the increasing degree is influenced intensely by the above parameters. Furthermore, ignoring intermediate stress effect would underestimate the strength properties of the rock material and lead to a very conservative estimation value. 展开更多
关键词 rock-socketed pile generalized nonlinear unified strength criterion slip line principle embedment ratio damage endbearing capacity
下载PDF
线路坐标的通用计算及代数系统验证
7
作者 李照中 《石家庄铁道学院学报》 2006年第3期43-47,共5页
基于各类道路线型曲率呈线性变化的共同特性,给出了线元上任意点坐标方位角的统一计算公式,进而提出了适用于所有道路线型平面测设计算的中桩坐标、边桩坐标的数值积分通用公式,且在M icorsft Excel中得以实现。并对数值积分公式给出了... 基于各类道路线型曲率呈线性变化的共同特性,给出了线元上任意点坐标方位角的统一计算公式,进而提出了适用于所有道路线型平面测设计算的中桩坐标、边桩坐标的数值积分通用公式,且在M icorsft Excel中得以实现。并对数值积分公式给出了相应的计算机代数系统验证方法。实例计算结果表明通用公式正确有效。 展开更多
关键词 线元 曲率 坐标 数值积分 代数系统验证
下载PDF
Nonlinear analysis of pile load-settlement behavior in layered soil
8
作者 吕述晖 王奎华 +1 位作者 张鹏 C.J.LEO 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第9期3615-3623,共9页
A simplified approach is presented to analyze the single pile settlement in multilayered soil. First, a fictitious soil-pile model is employed to consider the effect of layered soil beneath pile toe on pile settlement... A simplified approach is presented to analyze the single pile settlement in multilayered soil. First, a fictitious soil-pile model is employed to consider the effect of layered soil beneath pile toe on pile settlement behavior. Two approximation methods are proposed to simplify the nonlinear load transfer function and simulate the nonlinear compression of fictitious soil-pile, respectively. On this basis, an efficient program is developed. The procedures for determining the main parameters of mathematical model are discussed. Comparisons with two well-documented field experimental pile loading tests are conducted to verify the rationality of the present method. Further studies are also made to evaluate the practicability of the proposed approach when a soft substratum exists, and the results suggest that the proposed method can provide a constructive means for assessing the settlement of a single pile for use in engineering design. 展开更多
关键词 PILE load-settlement behavior fictitious soil-pile layered soil soft substratum SEDIMENT
下载PDF
Nonlinear analysis of pile groups subjected to combined lateral and torsional loading 被引量:1
9
作者 Ling-gang KONG Zhong-chang ZHANG Yun-min CHEN 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2020年第3期179-192,共14页
An empirical approach has been developed to analyze the nonlinear response of a pile group with arbitrarily distributed piles subjected to combined lateral and torsional loading.In this approach,the concept of instant... An empirical approach has been developed to analyze the nonlinear response of a pile group with arbitrarily distributed piles subjected to combined lateral and torsional loading.In this approach,the concept of instantaneous twist center is applied to analyze the displacement relationship of pile heads and establish the static equilibrium equations of the pile cap.The horizontal interaction among the individual piles is considered through the generalized p-multiplier.The coupling effect of lateral resistance on the torsional resistance of each pile is quantified using an empirical factorβ;the lateral and torsional nonlinear responses of individual piles are modeled by p-y andτ-θcurves,respectively.The proposed approach not only captures the most significant aspect of the group effect and coupling effect in a pile group subjected to combined lateral and torsional loading,but also automatically updates p-multipliers of individual piles based on pile cap displacements.The proposed approach was verified using results of model tests on pile groups subjected to lateral loading,torsional loading,and combined lateral and torsional loading,separately.In general,the pile cap response and the transfer of applied loads in the pile groups agree well with the test results. 展开更多
关键词 Combined lateral and torsional loading Pile groups Twist center p-multiplier Group effect
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部