Railway frame bridge construction method

A construction method and frame bridge technology, which is applied in the direction of erecting/assembling bridges, bridges, excavation, etc., and can solve problems such as difficulty in meeting construction quality requirements, long construction period, and complex bridge structure

Active Publication Date: 2018-06-15
中铁十九局集团华东工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the process of high-speed railway construction, the bridge structure is relatively complicated due to the requirements of the high-speed railway seamless turnout on the bridge structure, which increases the difficulty of construction
It is difficult to meet the construction quality requirements with the current construction methods, and the construction period ...

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0055] 1. Foundation treatment construction method:

[0056] Construction schemes such as sand sandwich gravel cushion, CFG piles, heavy rolling, and dynamic compaction were adopted; dynamic compaction:

[0057] Clean up and level the construction site. When the surface soil is soft, a layer of sand and gravel construction cushion with a thickness of 1.0-2.0m can be laid;

[0058] Mark the position of the tamping point and measure the elevation of the site;

[0059] The crane is in place, and the rammer is placed at the ramming point;

[0060] Measure the height of hammer top before ramming;

[0061] ⑤ Ramping and recording the depth of the ramming pit one by one; when the ramming pit is too deep and it is difficult to lift the hammer, stop the ramming, fill the pit until it is level with the pit top, record the amount of filling, and repeat until the specified ramming times and control standards are met Complete the tamping of a pier;

[0062] ⑥Complete the constr...

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Abstract

The invention relates to a railway frame bridge construction method which mainly aims at solving the problems that an existing construction method can hardly meet the construction quality requirementand a construction period is long. In a foundation treatment construction method, construction schemes such as a broken-stone-sandwiched sand cushion layer, CFG piles, heavy grinding and dynamic compaction are adopted; in foundation construction, the axis and the side boundaries of a frame bridge are defined through a total station, the elevation is measured through a water level, and an excavation line and the excavation depth are determined; and in bridge body construction, supports and an inner mold are installed, reinforcing steel bars are manufactured and tied, an integrally-combined formwork is adopted as a bridge body outer mold, side wall and top board concrete is poured, edge wall and top board concrete is cured, the formwork is detached, and finally retaining wall construction and settlement joint and waterproof layer construction are conducted. The method has the beneficial effects that the construction speed is high, the quality is good, and a construction period is short.

Description

Technical field: [0001] The invention relates to a construction method of a railway frame bridge. Background technique: [0002] At present, in the process of high-speed railway construction, the bridge structure is relatively complicated due to the requirements of the seamless turnout of the high-speed railway on the bridge structure, which increases the difficulty of construction. It is difficult to meet the construction quality requirements with the current construction methods, and the construction period is long. Therefore, how to choose a reasonable bridge construction method to overcome the high-speed railway seamless turnout requirements for the stiffness of bridge piers and beams, and to facilitate construction, maintenance and improvement. The durability of the structure ensures the service life of the structure, which is one of the key technologies to be studied and solved urgently. Invention content: [0003] The technical problem to be solved by the present i...

Claims

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Application Information

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IPC IPC(8): E01D21/00E02D3/046E02D5/34E02D17/02E02D27/32E01D101/26
CPCE01D21/00E01D2101/26E02D3/046E02D5/34E02D17/02E02D27/32E02D2250/0007E02D2250/0023E02D2300/002
Inventor 苏影张松弯晓林赵忠洋李飞成赫刘家酉吴振波邱久君
Owner 中铁十九局集团华东工程有限公司
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