A large-span long-distance underground space main support integrated structure and construction method

Abstract

The invention relates to a large-span long-distance underground space main body supporting integrated structure and a construction method thereof. The construction method comprises the following steps: constructing a first vertical shaft and a second vertical shaft at the two ends of the underground space to be constructed; manufacturing steel tube sections; pressing the steel tube sections into a soil body one by one through a hole of the side wall of the first vertical shaft until the first vertical shaft is communicated to the second vertical shaft; circulating until all the steel tube sections are pressed to assigned positions; machining an end sealing plate, wherein the end sealing plate is provided with an exhaust hole, a concrete inlet and a corrugated pipe head exposing hole; enabling steel strands to penetrate into a corrugated pipe, mounting an anchorage device and feed through jack on the end sealing plate, tensioning and locking the anchorage device, and filling the corrugated pipe with concrete after the jack is removed; quickly excavating earth sectionally, and quickly constructing a pile foundation; finally, cutting pile heads and constructing a structural bottom plate to form a complete underground space. According to the large-span long-distance underground space main body supporting integrated structure and the construction method thereof, a supporting structure during an underground space construction process is reduced or omitted, and the purpose of saving materials is achieved; in addition, the process is simple, the influence on surrounding environment is low, and collapse accidents are reduced.

Description

technical field [0001] The invention belongs to the technical field of large-span and long-distance underground space construction, and in particular relates to a large-span and long-distance underground space main support integrated structure and a construction method of the structure. Background technique [0002] With the continuous improvement of the level of urbanization in our country, the contradictions between urban development and the shortage of land resources and urban environmental protection have become increasingly prominent, and the development and utilization of underground space will be the inevitable way to solve these contradictions. However, the dense buildings and structures in the city, the dense road traffic and various underground pipe networks make the surrounding environment of the city more and more complex. environment, which puts forward higher requirements for underground engineering construction technology. In order to solve the problems exist...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for constructing a large-span and long-distance underground space main body support integrated structure. The technical problem to be solved is that the existing shallow-buried large-span underground space construction method encounters complicated procedures and consumption of temporary support materials. Large, difficult to protect the surrounding environment, frequent collapse incidents, difficulty in transporting earthwork in the underground passage

Images