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V-shaped pier outer support construction method

A construction method and external support technology, applied in the erection/assembly of bridges, bridges, buildings, etc., can solve problems such as adverse effects and secondary effects of V-shaped pier inclined legs, saving construction costs, shortening construction period, and solving root problems. Effects of stress problems

Active Publication Date: 2015-09-23
SHENYANG MUNICIPAL GROUP
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AI Technical Summary

Problems solved by technology

Among the many structural types of bridge pier columns, the V-shaped pier is novel and light in design, but during construction, due to the thinner root of the V-shaped pier, it will be adversely affected during the construction of the inclined legs; , and will have a secondary impact on the root of the V-shaped pier's oblique legs

Method used

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  • V-shaped pier outer support construction method

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Embodiment Construction

[0030] A kind of V-shaped pier external support construction method, specifically comprises the following steps:

[0031] 1. Foundation pit backfill and treatment

[0032] Before backfilling, remove the sundries (soil blocks, woven bags, benzene boards, etc.) in the foundation pit. Layered backfill with graded gravel, each layer of backfill thickness ≤ 20cm, layered tamping and rolling, the compaction degree of more than 98% can be filled with the previous layer. After backfilling to the bottom elevation of the designed ground beam (truss foundation), pay attention to the smooth surface.

[0033] 2. Ground beam (truss foundation) construction

[0034] After the backfilling of the cap foundation pit is completed, the surveyors will give the designed construction position of the ground beam (the cross-sectional size is 750×750mm) (the truss is in place), and the construction of steel bars, formwork and concrete shall comply with the requirements of the bridge foundation constr...

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Abstract

A V-shaped pier outer support construction method comprises preparation work before construction, foundation pit refilling and processing, ground beam truss foundation construction, right-angle truss installation, pier rebar and formwork installation, fine rolling and rough twisted steel installation, V-shaped pier concrete pouring, V-shaped pier formwork and right-angle truss dismounting and other procedures. By means of the comprehensive application of two construction technologies of opposite pulling of a right-angle truss and fine rolling twisted steel, the single item construction technology is simple, and operation is easy. Compared with a traditional construction method, it is guaranteed that the integrity of a V-shaped pier is kept, no large circulation component penetrates through an inclined leg, additional bending moment cannot be produced at the bottom, and cracks cannot be produced either; the input of circulation materials is little. Meanwhile, the construction safety is guaranteed, the construction process is improved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method for external support of V-shaped pier right-angle trusses for seasonal river and cross-line bridges. Background technique [0002] With the rapid development of the economy, the rapid construction of transportation infrastructure such as highways and municipal roads. Road construction through rivers, ravines, and road-to-road intersections requires the construction of bridges. In particular, the construction of municipal bridges not only meets the use functions, but also considers the urban landscape. Among the many structural types of bridge pier columns, the V-shaped pier is novel and light in design, but during construction, due to the thinner root of the V-shaped pier, it will be adversely affected during the construction of the inclined legs; , and will have a secondary impact on the root of the inclined leg of the V-shaped pier. This cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 高辉郝凤波刘志斌韩金昊
Owner SHENYANG MUNICIPAL GROUP
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