Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Covering and excavation forward and reverse combined construction method for multi-layer large-span deep foundation pit in urban core area
The invention discloses a cover-excavation forward and reverse combined construction method for a multi-layer large-span deep foundation pit in an urban core area, and relates to the technical field of underground structure engineering construction. The construction method comprises a ground, a first underground layer, a second underground layer, a third underground layer and a fourth underground layer, and comprises the following construction steps that enclosure structure stand column piles, uplift piles and temporary stand columns are constructed from the ground; constructing a first-stage fence, and constructing a north side cover plate; constructing a second-stage fence, constructing other cover plates, arranging a temporary concrete support at a hole, excavating a soil body to a bottom plate of the negative first layer, temporarily replacing a plate of the negative second layer by hoisting and erecting a steel support, removing the temporary steel support of the negative second layer, and constructing the bottom plate of the negative second layer, side walls of the underground second layer and the underground third layer and the temporary concrete support. By means of the cover and excavation forward and reverse combined construction method, part of structural plates are replaced with steel supports in the construction process, other structural plates are temporarily supported through concrete, part of structural layers are subjected to forward construction, and part of structural layers are subjected to reverse construction, so that the construction period is remarkably shortened.
本发明公开了一种城市核心区域多层大跨深基坑盖挖顺逆结合施工方法，涉及地下结构工程施工技术领域。施工方法，包括地面，地下一层，地下二层，地下三层，地下四层，包括如下施工步骤：从地面施工围护结构立柱桩、抗拔桩、临时立柱；施工一期围挡，施作北侧盖板；施工二期围挡，施作其余盖板，在开洞处设临时混凝土支撑，开挖土体至负一层底板，通过吊装架设钢支撑临时替代负二层板，拆除负二层临时钢支撑，施作负二层底板、地下二层与三层侧墙、临时混凝土支撑。通过盖挖顺逆结合施工方法，在施工中采用钢支撑替代部分结构板，其余结构板通过混凝土临时支撑，部分结构层顺作，部分逆作，显著节省了工期。
Covering and excavation forward and reverse combined construction method for multi-layer large-span deep foundation pit in urban core area
The invention discloses a cover-excavation forward and reverse combined construction method for a multi-layer large-span deep foundation pit in an urban core area, and relates to the technical field of underground structure engineering construction. The construction method comprises a ground, a first underground layer, a second underground layer, a third underground layer and a fourth underground layer, and comprises the following construction steps that enclosure structure stand column piles, uplift piles and temporary stand columns are constructed from the ground; constructing a first-stage fence, and constructing a north side cover plate; constructing a second-stage fence, constructing other cover plates, arranging a temporary concrete support at a hole, excavating a soil body to a bottom plate of the negative first layer, temporarily replacing a plate of the negative second layer by hoisting and erecting a steel support, removing the temporary steel support of the negative second layer, and constructing the bottom plate of the negative second layer, side walls of the underground second layer and the underground third layer and the temporary concrete support. By means of the cover and excavation forward and reverse combined construction method, part of structural plates are replaced with steel supports in the construction process, other structural plates are temporarily supported through concrete, part of structural layers are subjected to forward construction, and part of structural layers are subjected to reverse construction, so that the construction period is remarkably shortened.
本发明公开了一种城市核心区域多层大跨深基坑盖挖顺逆结合施工方法，涉及地下结构工程施工技术领域。施工方法，包括地面，地下一层，地下二层，地下三层，地下四层，包括如下施工步骤：从地面施工围护结构立柱桩、抗拔桩、临时立柱；施工一期围挡，施作北侧盖板；施工二期围挡，施作其余盖板，在开洞处设临时混凝土支撑，开挖土体至负一层底板，通过吊装架设钢支撑临时替代负二层板，拆除负二层临时钢支撑，施作负二层底板、地下二层与三层侧墙、临时混凝土支撑。通过盖挖顺逆结合施工方法，在施工中采用钢支撑替代部分结构板，其余结构板通过混凝土临时支撑，部分结构层顺作，部分逆作，显著节省了工期。
Covering and excavation forward and reverse combined construction method for multi-layer large-span deep foundation pit in urban core area
一种城市核心区域多层大跨深基坑盖挖顺逆结合施工方法
GENG DAXIN (Autor:in) / ZHU MING (Autor:in) / HUANG YONGHU (Autor:in) / ZHU XIONGTAO (Autor:in) / AI PENGPENG (Autor:in) / CHENG XIANHONG (Autor:in) / CHEN HANG (Autor:in) / TANG MONING (Autor:in) / TAN CHENG (Autor:in) / XIA YANG (Autor:in)
28.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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