Thinking and Practice of Bored Pile Construction Technology in Municipal Road and Bridge Construction

2021 ◽  
Keyword(s):  
Construction Technology ◽  
Bridge Construction ◽  
Bored Pile

scholarly journals Research on Reliability of Straight Thread Connection of Reinforcement Cage of Bridge Foundation

2021 ◽  
Vol 248 ◽  
pp. 03064
Author(s):  
Jinhui Li ◽  
Xiaodong Shang ◽  
Minmin Yuan
Keyword(s):  
New Technologies ◽  
Practical Significance ◽  
Construction Technology ◽  
Bridge Construction ◽  
Thread Connection ◽  
Development Status ◽  
Steel Bar ◽  
Foreign Countries ◽  
Application Requirements ◽  
Bridge Foundation

With the continuous improvement of bridge construction technology in our country, although the service life of the bridge has been greatly extended, the mechanical connection technology of steel bar in the technology is still in the stage of steel bar straight thread connection, which is nearly 30 years behind that of foreign countries. According to the development status and application requirements of bridge construction in China, it is of great practical significance to explore new technologies and methods to solve the problem of insufficient strength of straight thread connection of reinforcement. In this paper, the reliability of the straight thread reinforcement connection in the bridge foundation reinforcement cage connection technology is studied as the main breakthrough point, and the main problems encountered in the application of the straight thread reinforcement connection technology in the bridge reinforcement cage connection are analyzed.

scholarly journals Construction Technology of Composite Cofferdam for Main Pier Bearing Platform of Dongjiang Lichuan Bridge

2020 ◽  
Vol 165 ◽  
pp. 04047
Author(s):  
Jianping Wang
Keyword(s):  
Steel Sheet ◽  
Economic Benefits ◽  
Construction Technology ◽  
High Quality ◽  
Rock Stratum ◽  
Advantages And Disadvantages ◽  
Construction Methods ◽  
Bored Pile ◽  
Geological Conditions ◽  
Pile Cap

Dongjiang Lichuan Bridge in Dongguan City is a curved tower curved beam cable-stayed bridge with a main span of 138m and no back cable. The main pier cap is located on the bank slope of Dongguan Waterway on one side of Nandi Road. The cushion cap is dumbbell type, and the left and right cushion caps are connected by tie beams. In most areas, the top of rock stratum is above the bottom of bearing platform. The rock stratum within the buried depth of bearing platform is moderately to strongly weathered argillaceous siltstone. The geological conditions are complex and the construction is difficult. In line with the principles of speeding up the construction process and improving economic benefits, comprehensive analysis and weighing advantages and disadvantages, the main pier cap adopts a composite cofferdam of filling soil to build an island and combining bored pile rows and steel sheet piles. The construction task of bearing platform of main pier has been completed with high quality. Compared with other cushion cap construction methods, this construction method has the advantages of fast construction, high quality, simple safety, energy saving and environmental protection. This paper briefly introduces the design scheme of composite cofferdam, expounds in detail the operation steps of steel sheet pile construction and the problems needing attention in construction, and provides good reference experience for similar pile cap construction.

The Application Research and Discussion on a Viaduct Artificial Excavated Pile Technology

2012 ◽  
Vol 446-449 ◽  
pp. 2449-2452
Author(s):  
Dong Guo Li ◽  
Gui Mei Shi
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Retaining Wall ◽  
Wall Effect ◽  
Construction Technology ◽  
Application Research ◽  
Technical Work ◽  
Bored Pile

A viaduct of the Qinglai expressway fourth contract was artificial excavated piles. The construction technical work was regarded as an example. The technical comparison were done between the artificial excavated pile and the bored pile on the pile foundation bearing capacity and the retaining wall effect . The artificial excavated pile replacing the bored pile was feasible, and the construction technology and the key problems of the artificial excavated piles were confirmed. The references were provided to the similar projects.

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.

Construction Control Technology of Cable Hoisting System for the Arch Rib of Steel Box Bridge

2014 ◽  
Vol 919-921 ◽  
pp. 1403-1406
Author(s):  
Yu Wang ◽  
Yan Hong Wei ◽  
Gui Fen Hu
Keyword(s):  
Simulation Analysis ◽  
Steel Structures ◽  
Narrow Channel ◽  
Construction Control ◽  
Construction Technology ◽  
Bridge Construction ◽  
Welded Steel ◽  
Geological Conditions ◽  
Stress And Deformation ◽  
Hoisting System

Mingzhou bridge in Ningbo is a half-through steel box arch bridge with 450m main-span. The bridge adopts welded steel structures except that abutments are made of steel composite structure. High requirements for the bridge construction technology are put forward because of the restrictions including poor geological conditions for bridge site, height limit for aircraft, narrow channel, frequent typhoon. The mid-span arch rib adopts cable hoisting and stayed buckle cable technology for the construction. This paper introduces the construction method during the assembled process of the mid-span arch rib. The numerical simulation analysis for the construction process is carried out. Stress and deformation of the main arch are in a reasonable range, which indicates completing the bridge construction control target successfully.

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.

Sign in / Sign up

Export Citation Format

Share Document