Research on Precast Segment Assembling Bridge Technology in Short-Line Matching Method

2012 ◽  
Vol 256-259 ◽  
pp. 1652-1657
Author(s):  
Hong Zhang ◽  
Min Wang ◽  
Yong Tao Zhang
Keyword(s):  
Prestressed Concrete ◽  
Large Scale ◽  
Development Trend ◽  
Concrete Bridge ◽  
Construction Technology ◽  
Bridge Construction ◽  
Matching Method ◽  
Short Line ◽  
Under Construction ◽  
Bridge Technology

Targeted at key technological difficulties of pre-stressed concrete bridge with precast segment assembling in short-line matching method, combined with the as-built projects and those under construction, this essay introduces systematic segmental precast assembly externally prestressed concrete construction technology in short-line matching method, and the developed serial complete equipments set, thus realizing development trend of factory-orientation, large-scale, mechanization, standardization of modern bridge construction.

The Key Technology of Short-Line Matching Method in Precast Segment Assembling of Externally Prestressed Concrete Bridges

2014 ◽  
Vol 1065-1069 ◽  
pp. 912-918
Author(s):  
Min Wang ◽  
Yong Tao Zhang ◽  
Wei Tian
Keyword(s):  
Prestressed Concrete ◽  
Large Scale ◽  
Development Trend ◽  
Concrete Bridges ◽  
Construction Technology ◽  
Matching Method ◽  
Key Technology ◽  
Prestressed Concrete Bridges ◽  
Short Line ◽  
Under Construction

Targeted at key technological difficulties of pre-stressed concrete bridge with precast segment assembling in short-line matching method, combined with the as-built projects and those under construction, this essay introduces systematic segmental precast assembly externally prestressed concrete construction technology in short-line matching method, and the developed serial complete equipments set, thus realizing development trend of factory-orientation, large-scale, mechanization, standardization of modern bridge construction.

Development and Construction Techniques of Foreign PC Continuous Beam

2013 ◽  
Vol 671-674 ◽  
pp. 1729-1731
Author(s):  
De Yu Huang
Keyword(s):  
Prestressed Concrete ◽  
Technology Development ◽  
Development Trend ◽  
Construction Technology ◽  
Continuous Beam ◽  
Bridge Construction ◽  
Engineering Project ◽  
Long Span Bridges ◽  
Continuous Beam Bridge ◽  
Made In China

In construction of medium span, small span and commonly long span bridges, the prestressed concrete continuous beams are playing an important role and the vistas of development of the bridges is vast. The design , construction and new material application remain to be further improved, through great achievements has been made in China in the construction of the PC continuous beam bridges, the global techniques of the bridges in the country in the recent several decades. Through the study of prestressed concrete continuous beam bridge construction technology development trend and research, understand the international bridge of advanced design concepts and construction technology of foreign engineering project bidding, formulates the reasonable construction plan, strengthen the domestic enterprises to expand overseas bridge construction market competitive force, and provide useful reference.

Geometry Control Technology of Transition Curve Section in Cross-Sea Bridge Erected by Precasting Segment Girder

2012 ◽  
Vol 256-259 ◽  
pp. 1548-1553 ◽  
Author(s):  
Yue Huang ◽  
He Hui Zheng ◽  
Min Wang ◽  
Xing Fa Wu
Keyword(s):  
Control Technique ◽  
Transition Curve ◽  
Concrete Bridge ◽  
Control Technology ◽  
Curve Section ◽  
Bridge Construction ◽  
Short Line ◽  
Line Method

The short line match-cast method of precast segments has proved to be the most versatile and reliable way to concrete bridge construction. The success of match-cast method relies heavily on accurate geometry control in precasting as the scale of adjustments during erection is very small and difficult to implement. So the required levels of accuracy in segments match-casting are stringent in order to assure erection accuracy. Therefore, the research on segments match-casting and geometry control technique of space distorted segments are very important.Based on the principle of match-casting using the short-line method, the geometry control technology of transition curve section in cross-sea bridge erected by precasting segment girder is proposed. As an example of south approach spans in north branch of Xia-zhang Cross-sea Bridge, this paper will provide a reference for the construction of similar bridges.

Replacement Construction Technology Analysis of Half-Through Reinforced Pipe Concrete Bridge Derrick

2014 ◽  
Vol 1065-1069 ◽  
pp. 949-955
Author(s):  
Gui Bing Wang
Keyword(s):  
Concrete Bridge ◽  
Construction Technology ◽  
Bridge Construction ◽  
Arch Bridge ◽  
Technology Analysis

This article relies projects, from derrick to replace the principle and derrick replacement order and step and important aspects of the construction derrick and the derrick to replace anti-corrosion treatment in half-through arch bridge construction derrick temporary replacement were discussed. Expect to be able to provide reference for similar projects draw on the research of this projects.

The Construction Technology Control Method for Large Scale Concrete Counterforce Wall Prestressed with Unbonded Tendons

2014 ◽  
Vol 638-640 ◽  
pp. 1586-1590
Author(s):  
Jin Kun Sun ◽  
Jin Liu ◽  
Bing Mei Zhou ◽  
Tao Lv
Keyword(s):  
Large Volume ◽  
Prestressed Concrete ◽  
Large Scale ◽  
Control Method ◽  
Construction Technology ◽  
Unbonded Tendons ◽  
Preparation Stage ◽  
Fixed End ◽  
Technology Control ◽  
Prestressed Reinforcement

Based on the characteristics of the large scale concrete counterforce wall design burdening heavy, the nonstructural section wide, belonging to the large volume, and the construction difficulty and precision being required high, apply the Construction technology of unbonded prestressed concrete. According to the aspects of material the preparation stage of construction, on-site construction stage marching into the arena, the blanking of prestressed with unbonded tendons, the manufacture of fixed end, the install of prestressed reinforcement, the pouring of the large volume, the tension of prestressed, ect. Raising the points of niche targeting technology control of construction for the similar construction provides with the beneficial experiential learning.

Seismic Response Analysis of Prestressed Concrete Bridge

2014 ◽  
Vol 556-562 ◽  
pp. 675-678
Author(s):  
Tao Zhang ◽  
Deng Pan ◽  
Jin Chao Yue
Keyword(s):  
Finite Element ◽  
Boundary Conditions ◽  
Prestressed Concrete ◽  
Large Scale ◽  
Elastic Recovery ◽  
Response Analysis ◽  
Concrete Bridge ◽  
Elastic Boundary ◽  
Prestressed Concrete Bridge ◽  
Elastic Boundary Conditions

Using large-scale finite element analysis software ANSYS analyzes seismic respons of prestressed concrete bridge, respectively establish finite element model under viscoelastic boundary conditions and elastic boundary conditions, compare and analyze seismic respons of bridge structure under two kinds of boundary conditions. Compared with elastic boundary conditions, viscoelastic boundary conditions not only can simulate elastic recovery performance of foundation, but also can realize infinite medium radiation damping. The research results provide the basis for the seismic design and protection of bridge.

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