Long-span pre-stress fish belly sill for foundation pit support and mounting method thereof

A foundation pit support and installation method technology, applied in excavation, foundation structure engineering, construction, etc., can solve the problems of small span, low rigidity of steel purlins, inconvenient connection, etc., and achieve large span, shortened construction period, and convenient construction Effect
CN102839675AActive Publication Date: 2012-12-26上海新强劲工程技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海新强劲工程技术有限公司
Publication Date
2012-12-26

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Abstract

The invention provides a long-span pre-stress fish belly sill. The long-span pre-stress fish belly sill is used for overcoming the defects of low rigidity, small span and insecure connection with opposite support of an encircling purlin of a supporting structure in the present foundation pit support. The encircling purlin has the advantages of high rigidity, long span, control deformation reliability, convenience in construction, reusability, and the like. The purposes of increasing the degree of safety of the foundation pit support, shortening the construction period and lowering the construction cost are achieved.
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Description

technical field

[0001] The invention relates to the technical field of civil engineering, in particular to an inner support structure for foundation pit support, in particular to a support structure for material recovery and an installation method for the structure. Background technique

[0002] In the foundation pit support structure, the purlins commonly used in the internal support structure mainly include reinforced concrete purlins and section steel purlins. In order to reduce the number of braces and angle braces in the supporting structure and increase the construction space of the foundation pit, it is necessary to increase the span of the purlins. For this reason, the reinforced concrete purlin is realized by increasing the section size, and the section steel purlin is realized by increasing the number of layers of the steel structure, but these methods will greatly increase the amount of supporting materials. As a result, various side truss structures have appeare...

Claims

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