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Construction method of external hanging type ventilation pavilion

A construction method and an external hanging technology, which is applied in the construction field of external hanging wind pavilions, can solve the problems of time-consuming and labor-consuming chiseling of piles, increase of structural construction joints, and small space for post-pouring belts, etc., to achieve rapid construction and speed up construction speed, reducing the number of effects

Pending Publication Date: 2019-05-03
SHANGHAI TUNNEL ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the small space of the post-pouring belt, this kind of construction plan results in time-consuming and labor-intensive removal of the pile body and poor safety. At the same time, structural construction joints are added, which may easily lead to water leakage problems in the later stage

Method used

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  • Construction method of external hanging type ventilation pavilion
  • Construction method of external hanging type ventilation pavilion
  • Construction method of external hanging type ventilation pavilion

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Embodiment Construction

[0033] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0034] Such as Figure 1 to Figure 2 As shown, an embodiment of the present invention provides a construction method for an externally hung wind pavilion, including the following steps:

[0035] 1. Set up the dewatering wells in the pit: set the dewatering wells 1 in the pit at the connection area between the main foundation pit and the Fengting foundation pit at the front of the excavation of the main structure foundation pit at intervals of 30-35m, and the well pipes of the dewatering well 1 in the pit are all made of solid pipes above the bottom plate. The dewatering well adopts a steel pipe well, and the top elevation of the well is above the initial water level. A submersible pump is arranged in the well. During the excavation of the foundation pit of the win...

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Abstract

The invention relates to a construction method of an external hanging type ventilation pavilion. An outside-pit dewatering well is arranged on the side, away from a main body foundation pit, of the ventilation pavilion, an in-pit dewatering well is reserved on the other side of the main body foundation pit, a steel support is arranged between an upturned beam of a main body and a crown beam of a construction method pile, and the side wall of a ventilation pavilion structure is poured by a large steel formwork. The construction method of the external hanging type ventilation pavilion has the advantages that the resulting force of the water-earth pressure acting on a bracing construction method pile is reduced by the outside-pit dewatering well; dewatering wells are reserved within the connection range between the main body foundation pit and the ventilation pavilion foundation pit, and the water leakage risk caused by water level recovery of the main body foundation pit is reduced; theinner bracing point is adjusted from the original main body bracing pile crown beam to the main body upturned beam, the breaking of the original main body bracing pile and the crown beam can be conducted along with an earth excavation, the mechanized operation can be realized, construction speed can be accelerated, and the inconvenience of a post-casting belt lifting a pile section is avoided; andrapid construction of the side wall of the structure is realized, the lateral supporting effect of the bracing pile is facilitated, and the deformation risk of the foundation pit is reduced.

Description

technical field [0001] The invention relates to a civil construction method, in particular to a construction method of an externally hung wind pavilion. Background technique [0002] The subway station structure is generally divided into the main structure of the station and the auxiliary structure. The auxiliary structure is generally divided into two types: wind pavilions and entrances and exits. The foundation pit of the wind pavilion shall be constructed first, and then the structure of the wind pavilion shall be rebuilt. The external-hanging wind pavilion is generally an underground one-story structure. The excavation depth of the foundation pit is generally about 10m, and the width is 6-10m. In the design, economy and safety are considered, and most of them adopt the construction method pile enclosure structure, and at the same time realize the water-stop function. Generally, there are two internal supports, and the supports are respectively set between the crown beam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D19/10
Inventor 戴海峰徐圯张宝杰张坤王金龙刘梦华王烨伟刘帅孟雪成
Owner SHANGHAI TUNNEL ENG CO LTD
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