Analysis of Road Bridge Repair and Strengthening Construction Technology

Highway infrastructure plays a crucial role in the healthy development of the social economy.Therefore,China has invested a lot of financial resources in the construction of road and bridge projects in recent years,resulting in the rise in scale and number of road and bridge projects.Simultaneously,the quality of road bridges has garnered widespread attention,necessitating an exploration of common hazards associated with road bridges and the significance of their reinforcement.It is essential to delve into specific technical methods to enhance the quality and service life of road bridges.This paper elaborates on the common hazards faced by road bridges and proposes maintenance and reinforcement strategies to promote the healthy development of road bridge engineering.

Study on the Construction Technology of Subgrade Pavement in Road and Bridge Settlement Section

With the continuous development of China’s economy,the construction of roads and bridges work has put forward higher requirements.Due to various factors,the long-term use of roads and bridges will produce a settlement phenomenon.Therefore,it is crucial to address settlement issues during the construction of roads and bridges to ensure that the quality of subgrade and pavement construction meets national regulations.This paper introduces the harm of subgrade pavement subsidence,analyzes the causes of subgrade pavement deformation,and discusses the technical points of subgrade pavement construction,hoping to provide some reference for relevant practitioners.

Application of Digital Technology in Road and Bridge Design

With the development and progress of science and technology,road and bridge design has experienced rapid development,from the initial manual drawing design to the popularity of Computer-Aided Design(CAD),and then to today’s digital software design era.Early designers relied on hand-drawn paper design forms which was time-consuming and error-prone.Digital support for road and bridge design not only saves the design time but the design quality has also achieved a qualitative leap.This paper engages in the application of digital technology in road and bridge design,to provide technical reference for China’s road and bridge engineering design units,to promote the popularity of Civil3D and other advanced design software in the field of engineering design and development,ultimately contributing to the sustainable development of China’s road and bridge engineering.

Structural Design of Roadbed and Pavement in Transition Section of Roads and Bridges

As the lifeline of social development,road and bridge projects are the main channel to realize resource transportation and economic circulation.Ensuring the quality of road and bridge project construction is crucial for the development of society,the economy,and people’s livelihoods.This paper studies the design of roadbed pavement structures in road and bridge transition sections.It aims to provide technical references and significance for China’s road and bridge engineering design and construction units,promoting scientific and standardized design in these actions.This will contribute to the safety and stable operation of road and bridge projects,offering effective technical support.Furthermore,it seeks to foster the sustainable and healthy development of China’s road and bridge engineering on a macro level.

Design Strategy of Municipal Roads and Bridges Using BIM Technology

Under the rapid development of socio-economy and urbanization,the state’s attention toward urban infrastructure continues to increase.The construction of municipal road and bridge projects is related to people’s daily travel and transport safety,and it also plays an important role in promoting urban economic development.Therefore,modern technology should be fully utilized in the design of municipal roads and bridges to strengthen construction cost control and increase their social and economic benefits.In this paper,the characteristics and application status of BIM technology in municipal road and bridge design are analyzed,and corresponding road and bridge design strategies are explored to promote the healthy development of municipal road and bridge projects.

Innovation of Engineering Surveying Course Teaching for Road and Bridge Engineering Technology Majors in Higher Vocational Colleges

Engineering surveying is an important course for road and bridge engineering technology majors in higher vocational colleges.With the advancement of science and technology,engineering surveying technology is also constantly developing,so the theoretical knowledge and professional skills that students need to master are also becoming increasingly complicated.To stimulate the students’interest in learning the course,it is necessary to continuously introduce innovative teaching methods into the course.In this paper,the importance of teaching innovation in engineering surveying courses of road and bridge engineering technology majors in higher vocational colleges and the knowledge system that students need to master are analyzed.Subsequently,innovative strategies are proposed to help improve the students’mastery of engineering surveying.

Technologies for Asphalt Pavement Surface Testing in Road and Bridge Construction

Asphalt pavement is currently one of the main components in the construction of roads and bridges.However,from a practical point of view,various quality problems are prone to occur in the surface layer of asphalt pavement,which will lead to the poor overall quality of road and bridge projects.Therefore,it should be applied reasonably.Advanced testing technologies are used to test the mixture quality,compaction,segregation,thickness,and other aspects of the asphalt pavement surface layer,so as to improve the quality of the asphalt pavement surface layer,and then improve the overall quality of road and bridge construction.Therefore,this paper mainly analyzes the technologies for asphalt pavement surface layer testing in road and bridge engineering construction.

Overall Selection Design Based on the Mega Highway Bridge Project

In the continuous development of the modern highway and bridge engineering industry,the reasonable selection of mega highway bridges and their design is crucial.Based on this,this paper takes the actual bridge project as an example,and analyses the overall selection design of such highway bridges,including the basic overview of the project,the basic selection principle of mega highway bridge project structure and its design strategy,etc.,to provide scientific reference for its selection design.

Overseas China Cultural Centers: A Window of Silk Road and A Bridge for Cultural Exchange

The principle of “achieving shared growth through discussion and collaboration” is important for the “Belt and Road” initiative. Overseas China Cultural Centers serve as a window by introducing the historical status and relevance of the “Belt and Road” in boosting cultural exchanges and trades and by promoting dialogue and integration among civilizations. The Silk Road spirit of “peaceful cooperation,openness and inclusiveness, m utual learning and mutual benefit” will prevail in the new historical period.

Discussion on Crack Control in Road Bridge Design and Construction

In recent years,China's social economy is in a period of rapid development which has also made great progress in the construction of roads and bridges.Roads and bridges as basic building facilities provides strong support for local transportation and socioeconomic development in China.At this stage,roads and bridges are the basic guarantee for the development of the national economy,so great attention must be paid to the quality of their construction and engineering design.At present,the main factor affecting the quality of road bridges in China is the problem of bridge cracks.There are various reasons causes for cracks they must be controlled by effective measures to better improve the quality of road bridges.This article will discuss crack control in road bridge design and construction.

Cause and Prevention Measures of Concrete Cracks during the Construction of Road and Bridge Engineering

Road and bridge engineering is an indispensable part of socialist economic construction in China, whose construction quality significantly affects the infrastructure construction level in the whole society. To meet the rapid economic development of various regions, construction scale and quantity of road and bridge engineering have been continuously expanded and increased, therefore, higher requirements for construction quality and construction standard are also presented. During the construction of road and bridge engineering, concrete crack is a key problem which affects the construction quality. In this regard, this paper analyzes cause and prevention measures of concrete cracks during the construction of road and bridge engineering, and hopes to provide construction personnel with valuable references.

Quality Problems and Preventive Measures for Municipal Road and Bridge Construction

In the process of construction of municipal roads and bridges,it is especially important for the construction of waterproof roadbed.If the leakage of waterproof foundation surface will inevitably lead to the impact of the quality of roads and bridges,not only the economic and social benefits of the enterprise be lost but also threaten the safety of pedestrians'lives and property.Therefore,this paper analyzes the influencing factors in the waterproof roadbed surface of municipal road bridge construction,and proposes corresponding solutions.

Analysis of Common Diseases and Construction Treatment Technologies of Road and Bridge Engineering

In recent years, the rapid growth of the number of private cars has greatly increased the traffic pressure, so the quality of roads and bridges should be further improved. The paper expounds the related matters of road and bridge engineering from three aspects. Firstly, it expounds the construction principles of road and bridge engineering, which are regarded as the theoretical basis of follow-up research. Secondly, it analyzes the common diseases of road and bridge engineering, including bridgehead damage, rein-forcement corrosion, and subgrade uneven settlement, etc. Finally, it puts forward the construction treatment technology of road and bridge engineering on the basis of the construction principles and taking the common diseases as reference.

Study on stability of road and bridge based on stress analysis and computer modeling

In this paper, some concepts and problems in the stress analysis design method are discussed. Based on the introduction of various types of stress characteristics, the differences between stress decomposition and stress classification are emphasized. We pointed out that the stress decomposition only relates how stress is decomposed into uniform stress, the equivalent stress distribution of linear and nonlinear stress components, how will break out of stress classification, entirely by the stress position and stress the external decision. At the same time, it also gives a valuable perspective on the distribution twe ofoeak stress, the self limitation and the stress decomposition and classification.

Study on Quality Control of Concrete Raw Materials in Road and Bridge Construction

The main material of concrete is a construction building material composed of water and mineral mixture and cement and chemical additives in the corresponding proportion and below the standard.In the process of making concrete material,slurry and cement are needed to mix,then cement slurry and sand are mixed into mortar according to the corresponding proportion,and aggregate is added to mortar to form concrete building material.In the process of concrete preparation,the most important construction link is mixing,which needs to be fully stirred to make the performance of concrete meet the construction needs.In the process of concrete construction technology development,both mix ratio and production technology have become more and more mature,but there are still some problems,which have an impact on the quality of concrete[1].Therefore,this paper discusses the quality control of concrete raw materials according to the construction process of road and bridge.

Construction Technology and Safety Monitoring Measures of Road and Bridge Engineering

With the acceleration of urbanization and the continuous improvement of urban infrastructure construction,roads and bridges,as an important infrastructure content in China,directly affect people's daily travel.Therefore,the construction and management of roads and bridges must be improved to ensure the quality and safety of roads and bridges and effectively prevent safety accidents.Strengthen the management of road and bridge construction through safety monitoring,improve the safety factor of the project and ensure people's travel safety.This paper mainly analyzes the common diseases and construction technology of road and bridge engineering construction,and puts forward safety monitoring measures.

Technical Analysis of Subgrade and Pavement Construction in Settlement Section of Municipal Road and Bridge Engineering

The construction of municipal roads and bridges is an important foundation for the smooth traveling and transportation.However,if there a reduction in the subgrade and pavement part,the safety and the comfort of the driver will be seriously affected,therefore,reasonable measures should be taken on time to tackle the related issues.The significance of subgrade and pavement construction in the subsidence section,the key points of the construction,and the appropriate control measures that are should be taken in the actual construction,was discussed in this paper.Further,this paper analyzes the availability of the subgrade and pavement construction technology for the municipal roads and bridges,to provide a reference for engineers.

ERECTING A BRIDGE OF FRIENDSHIP AND EMBARKING ON A ROAD OF COMMON DEVELOPMENT

The October 1994 happened to be the 20th anniversary of scientific cooperation and academic exchange between the CAS and MPG. On the occasion, both sides would hold commemorative activities in Munich to celebrate this collaborative partnership in a bid to review their past experiences and explore the possibilities of broadening their current joint endeavours as well as reveal their achieved cooperative results to the German public.

Utility Impact below Bridge or Culvert Soffit on Open Channel Flow

The background to this research was a flooding incident that occurred in Bridgend, Co. Donegal, Ireland in August 2017. While several properties were flooded, a flooding case study of a single dwelling house adjacent to the Bridgend River at Riverdale, Bunamayne, Co. Donegal, Ireland is used herein. For this study the flooded site shall be referred to as the “Hegarty property”. A structure in the form of a stone arched culvert is located directly adjacent to the two-storey detached dwelling house on the Hegarty Property. While the culvert is referred to locally as a bridge, within this research the word culvert will be used in connection with the structure. The culvert has a concrete surrounded utility (watermain) crossing at a gradient below the culvert soffit on the upstream face of the structure. The utility obstructed flow through the culvert and contributed to the flooding event. Given the implication of climate change and the increased probability of more extreme flooding events, it was decided to explore the case study to ascertain the factors that contribute to flooding events when utilities are positioned at culvert or bridge structures. This work was completed to assist undergraduate students, researchers, and local authorities in a relatively unknown area of flood causation.

超长大跨度公铁合建桥梁结构体系研究

新建甬舟铁路西堠门公铁两用大桥连接金塘岛和册子岛,桥位处海域宽2.7 km,最大水深93 m,地形复杂,桥梁设计难度大。为研究超长大跨度公铁合建桥梁合理结构体系,结合地形地质条件,选取主跨1500 m悬索桥、斜拉桥及斜拉悬索协作体系3种桥型方案,对上部结构设计进行详细介绍,并从静力性能、动力性能、经济性能等方面对不同结构体系进行对比分析。研究表明:(1)与斜拉体系相比,协作体系桥可减小30%~50%的主梁内力和60%的桥塔内力,一定程度上解决了加劲梁承受巨大轴压力造成屈曲问题,并有效减小了桥塔规模;(2)与悬索桥相比,协作体系可减小50%的主缆内力,主缆钢丝和锚碇的工程量相应减小,施工难度得以降低,同时协作体系扭转频率更高,降低了结构在较低风速下发生涡激振动的可能性;(3)斜拉悬索协作体系能够充分发挥斜拉结构和悬索结构的组合优势,实现超大跨度的同时具有较大的纵向刚度和竖向刚度,满足铁路行车对结构刚度的要求;(4)对于主跨1500 m级超长大跨度公铁合建桥梁,斜拉悬索协作体系经济性更好。