The Construction Proposals and Construction Technology of Steel Plate Pile Cofferdam of Off-shore Pumping House for the Highest Foundation in Asia

This paper described in detail the construction proposals and construction technology of steel plate pile cofferdam used for the construction of off-shore pumping house of the highest foundation in Asia, as well as the construction method and technical analysis of treatment of 'exposed foot' of steel plate pile cofferdam.     

Construction Techniques of the Ultra Large Diameter Steel Confferdam Sinking in Uper Stream Yangtze River

This article introduces the construction technique of ultra large diameter steel cofferdam in brief aiming at the point and crux in the construction,which is based on the sinking construction craft of 36m diameter steel cofferdam of 10~# main pier in Zhongxian Yangtze River Bridge,laying particular emphasis on the system of anchor and fixed position,which can provide a reference for the similar deep water foundation construction.     

Analysis of Construction Risk for Water Piers and Foundations with Double-wall Steel Cofferdam Based on the Fuzzy Fault Tree Theory

Construction risk for water piers and foundations with double-wall steel cofferdam was analyzed by the fuzzy fault tree theory. An evaluation method of construction risk for water piers and foundations with double-wall steel cofferdam was proposed. Fuzzy fault tree of construction risk for water piers and foundations with double-wall steel cofferdam was established based on Yingwuzhou Yangtze River Bridge. 31 bottom events were considered in fuzzy fault tree model according to 2 water pier and foundation with double-wall steel cofferdam. Key process of construction risk was obtained and risk prevention measures were proposed.Results showed that fuzzy number of construction risk probability for water piers and foundations with double-wall steel cofferdam was(0.05015,0.05278,0.05542). Construction risk of 2 water pier was highest. And weld leakage, pile broken and sand boiling were the key processes with higher construction risk. There fore appropriate prevention measures would be taken to reduce the construction risk for water piers and foundations with double-wall steel cofferdam.     

Large Span Concrete Box Beam Construction Technology

Combined with the engineering practice, the method of large span post tensioned prestressed box beam construction technology was introduced, which can provide the reference for the similar project.     

Research on Cost Control of Steel Structure Engineering in Main Construction

This paper analyzes the tenet of cost control for steel structure engineering in main construction. It expounds the idea and control ways of production cost, quality cost, time cost and risk cost in main construction of steel structure engineering. It puts forward a method of cost forecast and measures for production cost cut.     

Appropriate Technology and Corresponding Design Strategies for the Steel Construction Congregated Apartments

In this paper,notions on appropriate technology for the Steel Construction Congregated Apartments are proposed in order to deal with the technical impediment that arises from applying steel structural techniques to the congregated apartments.The appropriate technology for the steel construction congregated apartments is defined as systematic technologies that are in harmony with the status quo of Chinese productive force level,social culture and building technology,and as the strategies of choosing or balancing technology according to sustainable development principle.The principal design and constructing strategies of appropriate technology are as follows:(1) organization of residential space combined with steel construction techniques,(2) suitable structural system,(3) a new idea of fire resistance,and(4) kit building technique etc.A technological concept analysis about an ideal model of a steel construction system congregated apartment combined with the appropriate technology is also presented.     

Research on Quality Control of Steel Structure Engineering in Main Construction Work

This paper analyzes the tenet of quality control of steel structure engineering in main construction work and investigates the course and way of quality control.     

Simplified Elasto Plastic Analytical Model for Stiffened Steel Plate Shear Wall with Slits

Based on the mechanism of steel slit wall, a simplified elasto plastic analytical model which allows for nonlinear dynamic and static analysis was proposed. The parameters of simplified model related to configuration and nonlinear behavior were defined. In order to validate the simplified model, the pushover analysis of steel slit wall and a frame with steel slit wall were conducted. The results show that the load displacement curves obtained from simplified models, experiments and FEM are similar. The proposed model can fully represent the mechanism of steel slit wall, and it can correctly predict the internal forces and deformations of each member in the model.     

Effect by Hot Rolling Process on Wall Thickness Difference in a Same Steel Pipe

The causes producing wall thickness difference in a same pierced shell are expounded and the influences of piercing, rolling and mandrel drawing on the difference are studied.     

Construction Technology for the Main Bridge Pier of Citong Bridge in Quanzhou City

The Citong Bridge is located in the river estuary section with 4 meter tide range and mixed geological structure. In this paper, the technique for construction of the main bridge pier was presented in detail, which consists of the construction process, technological requirements, main construction parameters and amendment on defects. It is of great value for reference to the similar works.     

Overall Stability Design of Restrained H Section Steel Columns under Axial Load in Fire

The effects of the restraint stiffness ratio, the axial load ratio and the column slenderness on the buckling temperature and failure temperature of a restrained H section steel column under axial load in fire were studied with a calibrated finite element method (FEM) model. And the calculation methods of buckling temperature and failure temperature were proposed. The effect of the restraint stiffness ratio on the buckling temperature and failure temperatures could be expressed with an exponent curve while polynomial functions was appropriate for the effects of the axial load ratio and the column slenderness. The results of the proposed method were in good agreement with those by FEM method and on the safe side.     

“双一流”背景下高校优势特色学科建设路径

当中国特色社会主义进入新时代,大力发展高等教育是建设教育强国的必然要求。建设双一流,是党中央、国务院做出的重大战略决策,也是中国高等教育领域继211工程985工程之后的又一国家战略,有利于提升中国高等教育综合实力和国际竞争力。地方高校需要响应决策、抓住机遇,积极应对在拥有大批优势学科等挑战的情况下,设立发展优势特色学科,探索其相应的建设路径。     

专业镇技术创新平台的构建机理分析

构建专业镇技术创新平台这个重要载体,对解决专业镇产业共性技术难题,提高中小企业自主创新能力,促进产业结构优化升级和产业集聚,最终实现专业镇经济可持续发展,具有重要的现实意义。本文在分析专业镇技术创新平台概念、平台结构及内在关系的基础上,对专业镇技术创新平台的构建机理进行深入分析,重点提出非零和合作博弈;优势互补,创造协同效应;资源共享,风险分担;合作创新,节约交易成本等构建机理,为专业镇技术创新平台的构建、运行机制的设计及保障措施的安排提供理论依据。     

Construction Technology for Bid Construction Part B of Yangtze River Bridge in Jiangyin City

In this paper, the advanced construction technology and site management applied in bid construction part B of Yangtze River bridge in Jiangyin was presented in detail. This bridge is the largest span bridge in China, where the advanced technology applied is: 3-d coordinate control surveying in bridge tower, small powder for artificial pile, over-form and climb form in construction of tower column, temperature control for casting mass concrete. It is of great value for reference to large bridge building.     

Mechanical Behaviors of Large Span Space Structures in the Construction Process

Traditional structural design emphasizes checking whether a loaded structure satisfies design requirements without considering the construction process. There is a great difference in structures between the states in construction processes and design, however. To solve the above problems, a method of nonlinear time varying mechanics was adopted to analyze the construction process of a structure. The structural characteristics in each construction stage were analyzed by time varying mechanics and the variations of internal force and displacements obtained. We conclude that designs will not be safe if the time varying effect in the construction process analysis is not considered. We offer advice on the design and construction of large span structures.     

Comprehensive Control Technique of Reliability in Large Construction Project Management

After analyzing the current researches with the three-major-goal management: quality,cost and time,on the construction project and aiming at the existing issues,this article puts forward a new method.This method identifies the reliability of every fundamental module(subsystem) suitably,which based on the current standards to analyze and classify the large construction procedure,and was constituted by the construction procedure.Also was considered the three-major-goal(quality,cost and time) of every module.Then the reliability of the large construction project was calculated,the qualified standards of reliability were evaluated,and the general and particular frame was optimized.Furthermore,it raises a new conception of the comprehensive control technique considering the reliability of the three-major-goal synthetically.This article explores a new way to ensure the three major unified goals: quality,cost and time,of the construction project management,and makes sure that the process of the construction project was in an ideal condition.     

Wooden Wall Construction of Traditional Miao Stilted Buildings: A Case Study of Xijiang Miao Village in Guizhou

Wooden walls of traditional stilted buildings of Miao Nationality show outstanding regional characteristics. Taking the well-preserved traditional stilted buildings in Xijiang Miao Village for example, this paper focused on the construction units of the wooden wall, and the hierarchy of wooden wall construction, concluded spatial forms of the wooden wall, in order to explore the indigenous construction culture in the wooden wall system, protect and inherit the culture; seek for the ways of expressing national and regional characteristics in the modern architectural designs of relevant cultural regions.