A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of open cut tunnel extension foam concrete backfill structure
The invention relates to a construction method of an open cut tunnel extension foam concrete backfill structure. The construction method comprises the following steps of firstly, arranging sites on both sides of an open cut tunnel extension section, driving Larsen steel sheet piles for water stop construction, then constructing foundations on the both sides of the open cut tunnel extension section, hoisting prefabricated side plates, performing waterproof operation on a lower abrupt slope, mounting support rods and inclined rods, then forming a plurality of grooves and arranging vertical joint bars in the leveling area on the outer side of the open cut tunnel extension section, constructing a first foam concrete filling area while a formwork is obliquely and laterally erected, then hoisting a prefabricated steel arch slab, constructing a second foam concrete filling area, constructing a third foam concrete filling area after reserved drainage blind ditches and drainage pipes are arranged, and finally, constructing drainage and guide grooves in the top and the side edges. The construction method has the beneficial effects that in the whole construction process, normal operation of an existing route in the open cut tunnel extension section can be guaranteed, the unclosed open cut tunnel extension operation is achieved, the influence on social traffic is extremely small, and therefore, good social benefits are achieved.
本发明涉及明洞接长泡沫混凝土回填结构的施工方法，包括步骤：先明洞接长段两侧场地整理，打设拉森钢板桩止水施工，再明洞接长段两侧基础施工，接着吊装预制侧板，做好下部陡坡的防水作业以及支撑杆、斜向杆的安装施工，然后在明洞接长段外侧整平区内多道凹沟和竖向插筋并边斜侧向支模进行第一泡沫混凝土填充区施工，之后进行预制钢拱板的吊装工作和第二泡沫混凝土填充区施工，布置好预留的排水盲沟和排水管后进行第三泡沫混凝土填充区施工，最后进行顶部和侧边的排导槽施工。本发明的有益效果是：本发明的整个施工过程中能够保证明洞接长段内部既有路线的正常运营，实现了无封道明洞接长作业，对社会交通的影响极小，因此具有较好的社会效益。
Construction method of open cut tunnel extension foam concrete backfill structure
The invention relates to a construction method of an open cut tunnel extension foam concrete backfill structure. The construction method comprises the following steps of firstly, arranging sites on both sides of an open cut tunnel extension section, driving Larsen steel sheet piles for water stop construction, then constructing foundations on the both sides of the open cut tunnel extension section, hoisting prefabricated side plates, performing waterproof operation on a lower abrupt slope, mounting support rods and inclined rods, then forming a plurality of grooves and arranging vertical joint bars in the leveling area on the outer side of the open cut tunnel extension section, constructing a first foam concrete filling area while a formwork is obliquely and laterally erected, then hoisting a prefabricated steel arch slab, constructing a second foam concrete filling area, constructing a third foam concrete filling area after reserved drainage blind ditches and drainage pipes are arranged, and finally, constructing drainage and guide grooves in the top and the side edges. The construction method has the beneficial effects that in the whole construction process, normal operation of an existing route in the open cut tunnel extension section can be guaranteed, the unclosed open cut tunnel extension operation is achieved, the influence on social traffic is extremely small, and therefore, good social benefits are achieved.
本发明涉及明洞接长泡沫混凝土回填结构的施工方法，包括步骤：先明洞接长段两侧场地整理，打设拉森钢板桩止水施工，再明洞接长段两侧基础施工，接着吊装预制侧板，做好下部陡坡的防水作业以及支撑杆、斜向杆的安装施工，然后在明洞接长段外侧整平区内多道凹沟和竖向插筋并边斜侧向支模进行第一泡沫混凝土填充区施工，之后进行预制钢拱板的吊装工作和第二泡沫混凝土填充区施工，布置好预留的排水盲沟和排水管后进行第三泡沫混凝土填充区施工，最后进行顶部和侧边的排导槽施工。本发明的有益效果是：本发明的整个施工过程中能够保证明洞接长段内部既有路线的正常运营，实现了无封道明洞接长作业，对社会交通的影响极小，因此具有较好的社会效益。
Construction method of open cut tunnel extension foam concrete backfill structure
明洞接长泡沫混凝土回填结构的施工方法
WANG XINQUAN (author) / DIAO HONGGUO (author) / CUI YUNLIANG (author) / WEI GANG (author) / YU WEI (author) / QI CHANGGUANG (author)
2021-10-15
Patent
Electronic Resource
Chinese
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