Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for increasing rock-socketed depth of large-diameter cast-in-place pile
The invention belongs to the technical field of geotechnical engineering foundation pit supporting and construction, and relates to a construction method for increasing the rock-socketed depth of a large-diameter cast-in-place pile. The large-diameter cast-in-place pile is adopted on an overlying soil layer part, holes are formed manually or mechanically, and a reinforcement cage provided with a positioning sleeve is put down; the rock-socketed part is subjected to accurate positioning drilling through a fixed positioning sleeve, a micro steel pipe pile is put down, ballasting I-shaped steel is connected to the top of a reinforcement cage in a large-diameter cast-in-place pile, and the ballasting I-shaped steel is anchored to a certain depth of a peripheral soil layer through a ground anchoring component; the method is used for solving the problems that a large-diameter cast-in-place pile is difficult to rock, positioning deviation exists, and a reinforcement cage floats upwards in the pressure grouting process, accurate positioning of the large-diameter cast-in-place pile is achieved, the rock-socketed depth is guaranteed, disturbance to buildings around an overburden layer is reduced, construction is convenient and fast, and cost is saved.
本发明属于岩土工程基坑支护与施工技术领域，涉及一种提高大直径灌注桩嵌岩深度的施工方法，在上覆土层部分采用大直径灌注桩，利用人工或机械成孔，下放已安装定位套管的钢筋笼，嵌岩部分通过固定的定位套管进行精准定位钻孔、下放微型钢管桩，并在大直径灌注桩内的钢筋笼顶部连结压重工字钢，将压重工字钢通过地面锚定构件锚固于外围土层一定深度，用于解决大直径灌注桩入岩困难、定位偏差、压力注浆过程钢筋笼上浮等问题，实现大直径灌注桩精准定位，保证嵌岩深度，降低对上覆土层周围建筑的扰动，施工便捷，节约成本。
Construction method for increasing rock-socketed depth of large-diameter cast-in-place pile
The invention belongs to the technical field of geotechnical engineering foundation pit supporting and construction, and relates to a construction method for increasing the rock-socketed depth of a large-diameter cast-in-place pile. The large-diameter cast-in-place pile is adopted on an overlying soil layer part, holes are formed manually or mechanically, and a reinforcement cage provided with a positioning sleeve is put down; the rock-socketed part is subjected to accurate positioning drilling through a fixed positioning sleeve, a micro steel pipe pile is put down, ballasting I-shaped steel is connected to the top of a reinforcement cage in a large-diameter cast-in-place pile, and the ballasting I-shaped steel is anchored to a certain depth of a peripheral soil layer through a ground anchoring component; the method is used for solving the problems that a large-diameter cast-in-place pile is difficult to rock, positioning deviation exists, and a reinforcement cage floats upwards in the pressure grouting process, accurate positioning of the large-diameter cast-in-place pile is achieved, the rock-socketed depth is guaranteed, disturbance to buildings around an overburden layer is reduced, construction is convenient and fast, and cost is saved.
本发明属于岩土工程基坑支护与施工技术领域，涉及一种提高大直径灌注桩嵌岩深度的施工方法，在上覆土层部分采用大直径灌注桩，利用人工或机械成孔，下放已安装定位套管的钢筋笼，嵌岩部分通过固定的定位套管进行精准定位钻孔、下放微型钢管桩，并在大直径灌注桩内的钢筋笼顶部连结压重工字钢，将压重工字钢通过地面锚定构件锚固于外围土层一定深度，用于解决大直径灌注桩入岩困难、定位偏差、压力注浆过程钢筋笼上浮等问题，实现大直径灌注桩精准定位，保证嵌岩深度，降低对上覆土层周围建筑的扰动，施工便捷，节约成本。
Construction method for increasing rock-socketed depth of large-diameter cast-in-place pile
一种提高大直径灌注桩嵌岩深度的施工方法
YU LONGTAO (Autor:in) / BAI XIAOYU (Autor:in) / HE LAISHENG (Autor:in) / YAN NAN (Autor:in) / KANG HAIBO (Autor:in) / ZHANG MINGYI (Autor:in) / WANG XIRUI (Autor:in) / SU LEI (Autor:in) / JIANG ZHIJUN (Autor:in) / LI XUHUI (Autor:in)
06.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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