Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for foundation pit in raft of quicksand layer water-rich foundation
The invention provides a construction method for a foundation pit in a quicksand layer water-rich foundation raft. The construction method comprises the following steps that (1) Larsen steel sheet piles are driven in; secondly, earthwork is vertically excavated in the Larsen steel sheet piles to the bottom of the foundation pit in the raft, and a concrete cushion layer is poured on the bottom of the foundation pit in the raft through C20 concrete; (3) a prefabricated concrete module is placed on the concrete cushion layer, the top elevation of the prefabricated concrete module is made to be the same as the bottom elevation of the raft cushion layer, and a gap between the prefabricated concrete module and the Larsen steel sheet pile is poured and filled with C20 concrete; and (4) pulling out the Larsen steel sheet piles, bundling steel bars in grooves of the Larsen steel sheet piles, pouring concrete to form the wall of the foundation pit in the raft, performing 90-degree bent anchor steel bar anchoring on the prefabricated concrete module, and pouring the concrete to form a raft cushion layer, thereby completing the construction of the foundation pit in the raft. The Larsen steel sheet piles and the prefabricated concrete modules are utilized, the effect of effectively blocking water and quicksand is achieved, and the good blocking effect on the quicksand water-rich geological condition is achieved.
本发明提供一种流沙层富水地基筏板内基坑施工方法，包括以下步骤：步骤1）打入拉森钢板桩；步骤2）在拉森钢板桩内垂直开挖土方，开挖到筏板内基坑坑底，在筏板内基坑坑底上采用C20混凝土浇筑混凝土垫层；步骤3）在混凝土垫层上放入预制混凝土模块，使预制混凝土模块顶标高同筏板垫层底标高，预制混凝土模块与拉森钢板桩之间的缝隙采用C20混凝土浇筑填实缝隙；步骤4）拔出拉森钢板桩，拔出拉森钢板桩的槽内捆扎钢筋浇筑混凝土做筏板内基坑的壁，在预制混凝土模块上做90°弯锚钢筋锚固，混凝土浇筑形成筏板垫层，完成筏板内基坑的施工。本发明利用拉森钢板桩和预制混凝土模块，有效阻水阻流沙的作用，对流沙富水地质情况有着良好的阻隔作用。
Construction method for foundation pit in raft of quicksand layer water-rich foundation
The invention provides a construction method for a foundation pit in a quicksand layer water-rich foundation raft. The construction method comprises the following steps that (1) Larsen steel sheet piles are driven in; secondly, earthwork is vertically excavated in the Larsen steel sheet piles to the bottom of the foundation pit in the raft, and a concrete cushion layer is poured on the bottom of the foundation pit in the raft through C20 concrete; (3) a prefabricated concrete module is placed on the concrete cushion layer, the top elevation of the prefabricated concrete module is made to be the same as the bottom elevation of the raft cushion layer, and a gap between the prefabricated concrete module and the Larsen steel sheet pile is poured and filled with C20 concrete; and (4) pulling out the Larsen steel sheet piles, bundling steel bars in grooves of the Larsen steel sheet piles, pouring concrete to form the wall of the foundation pit in the raft, performing 90-degree bent anchor steel bar anchoring on the prefabricated concrete module, and pouring the concrete to form a raft cushion layer, thereby completing the construction of the foundation pit in the raft. The Larsen steel sheet piles and the prefabricated concrete modules are utilized, the effect of effectively blocking water and quicksand is achieved, and the good blocking effect on the quicksand water-rich geological condition is achieved.
本发明提供一种流沙层富水地基筏板内基坑施工方法，包括以下步骤：步骤1）打入拉森钢板桩；步骤2）在拉森钢板桩内垂直开挖土方，开挖到筏板内基坑坑底，在筏板内基坑坑底上采用C20混凝土浇筑混凝土垫层；步骤3）在混凝土垫层上放入预制混凝土模块，使预制混凝土模块顶标高同筏板垫层底标高，预制混凝土模块与拉森钢板桩之间的缝隙采用C20混凝土浇筑填实缝隙；步骤4）拔出拉森钢板桩，拔出拉森钢板桩的槽内捆扎钢筋浇筑混凝土做筏板内基坑的壁，在预制混凝土模块上做90°弯锚钢筋锚固，混凝土浇筑形成筏板垫层，完成筏板内基坑的施工。本发明利用拉森钢板桩和预制混凝土模块，有效阻水阻流沙的作用，对流沙富水地质情况有着良好的阻隔作用。
Construction method for foundation pit in raft of quicksand layer water-rich foundation
一种流沙层富水地基的筏板内基坑施工方法
LI ZONGYI (Autor:in) / MENG YUNBO (Autor:in) / LI DEHUI (Autor:in) / JIN LIZHENG (Autor:in) / TIAN SHIHONG (Autor:in) / LI YANCAI (Autor:in) / PENG BO (Autor:in) / ZHOU WEIFENG (Autor:in)
09.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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