Construction method of No.0 block of continuous rigid frame bridge of double-thin-wall pier

A construction method and technology of thin-walled piers, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as large impact on pier body structure and difficult construction, and achieve convenient construction, simple and convenient handling, and easy disassembly and assembly Effect

Active Publication Date: 2014-09-10
CHINA RAILWAY 16TH BUREAU GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to solve the construction difficulties caused by the bracket structure in the prior art, and the construction has a greater impact on the pier body structure, etc., to provide a bridge that can greatly speed up the construction progress, safe and reliable construction, and can provide bridge durability. , a construction method for No. 0 block of continuous rigid frame bridge with double thin-walled piers to reduce temporary engineering investment

Method used

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  • Construction method of No.0 block of continuous rigid frame bridge of double-thin-wall pier
  • Construction method of No.0 block of continuous rigid frame bridge of double-thin-wall pier
  • Construction method of No.0 block of continuous rigid frame bridge of double-thin-wall pier

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Embodiment 1

[0032] Example 1: Continuous rigid frame bridge with double thin-walled piers. The main bridge is a continuous rigid frame bridge of 40m+48m+2×70m+2×48m. A rectangular cap is adopted, with a length of 8.9m, a width of 5.7m, and a thickness of 2.5m. Figure 4 As shown, the construction method of block 0 is carried out in the following steps:

[0033] ① Installation of pier body connectors: Three rows of reserved holes are reserved in the pier body, and PVC pipes with an inner diameter of 40mm are embedded in each row of reserved holes, and φ32mm fine-rolled rebar is used to pass through the bolt holes 5 on the connector 4 to connect The piece 4 is fixed in the reserved hole on the outside of the pier body 7, wherein the vertical distance from the center of the pin connection hole 11 of the first row of reserved holes 1 to the top of the pier is 45 cm, and the second row of reserved holes 2 and the connecting piece 4 The vertical distance between the center of the pin connectio...

Embodiment 2

[0040] Embodiment 2: The difference from Embodiment 1 is that the reserved specific design position of the reserved holes in the pier body in step ① is the vertical distance from the center of the pin joint hole 11 of the first row of reserved holes 1 connector 4 to the top of the pier The vertical distance between the center of the pin connection hole 11 of the second row of reserved holes 2 connectors 4 and the center of the first row of reserved holes 1 connector pin connection holes 11 is 160 cm, and the third row of reserved holes 3 connectors 4 The vertical distance between the center pin hole 11 and the center of the pin hole 11 of the connector 4 of the second row of reserved holes 2 is 400 cm.

[0041] After the construction of the present invention is completed, the construction progress is greatly accelerated, the construction period is shortened by 35 days, and the safety and reliability of the construction are ensured. At the same time, the durability requirements ...

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Abstract

The invention discloses a construction method of a No.0 block of a continuous rigid frame bridge of a double-thin-wall pier, which comprises the steps of construction preparation, installation of a pier body connecting piece, installation of a bracket, bracket prepressing, template system installation, steel bar binding, prestressed pipeline installation, concrete pouring, prestressed reinforcing steel tensioning and mud jacking and bracket dismantling. The construction method solves the problems that in the prior art, construction is difficult due to a bracket structure and has big influence on a pier body structure, and the like. The construction method has the advantages of being capable of greatly accelerating construction progress, enabling the construction to be safe and reliable, being capable of guaranteeing durability of the bridge, reducing temporary project investment, and the like.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a construction method for No. 0 block of a continuous rigid frame bridge with double thin-walled piers. Background technique [0002] The continuous rigid frame bridge is a pier-beam consolidation system developed on the basis of continuous beams. It combines the mechanical characteristics of continuous beams and T-shaped rigid frame bridges. The continuous beam body is used as the main beam and consolidated with thin-walled piers. to make. In recent years, with the rapid development of science and technology and transportation, the continuous rigid frame bridge has the advantages of good structural integrity, excellent seismic performance, large torsional potential, reasonable structural force, and simple and clear bridge shape. Its economic competitiveness and convenient construction have been widely used in China. [0003] The pier cross-section of continuous rigid frame b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
Inventor 王小飞潘寿东楼敏周培峰刘家前
Owner CHINA RAILWAY 16TH BUREAU GRP CO LTD
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