Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Foundation pit support pile using steel pipe pile to replace cast-in-place pile rock-socketed
The invention relates to a foundation pit support pile using a steel pipe pile to replace a cast-in-place pile rock-socketed, and belongs to the field of foundation engineering. The foundation pit support pile comprises an upper support cast-in-place pile and a lower rock-socketed steel pipe pile, wherein the rock-socketed steel pipe pile consists of a plurality of steel pipes embedded into a bedrock and cement paste poured; and the upper parts of the steel pipes extend into the support cast-in-place pile to be lapped with a pile body reinforcing bar. During construction, a hole is formed in acomplete bedrock surface, after the hole is formed, the hole is drilled by a drilling machine, the steel pipes are placed into the hole, and the cement paste is poured into the hole, so that the steel pipes and the bedrock are fixedly connected into a whole, and the rock-socketed replacement of the support cast-in-place pile is realized. The method has the advantages that the hole diameter of thesteel pipe pile is larger, the number of holes is small, the centering is easy during pipe placement, the cost is low, the construction speed is high, and the process is simple. A karst cave can be vertically spanned in a karst area, so that materials are saved, and the stability of a rock-socketed section of the support pile is ensured. Meanwhile, in a bedrock fracture development area, the strength of the bedrock is greatly improved by pouring the cement paste, and the problem of strength of the bedrock due to fracture development is solved.
本发明涉及一种用钢管桩代替灌注桩嵌岩的基坑支护桩，属地基基础工程领域。本基坑支护桩，包括上部支护灌注桩和下部嵌岩钢管桩两部分，其中嵌岩钢管桩由数根钢管嵌入基岩和灌注水泥浆组成，钢管上部伸入支护灌注桩与桩身配筋搭接。施工时，首先成孔至完整基岩面时，后停止成孔，在孔内用钻机钻成孔，后向孔内置入钢管并注入水泥浆，使之与基岩固结为一体，实现支护灌注桩嵌岩的代替。本方法的优点是钢管桩的孔径较大、孔数少、下管时易对中、费用低、施工速度快，工艺简单。在岩溶地区还可竖向跨越溶洞，节省材料和保证支护桩嵌岩段的稳定性。同时，在基岩裂隙发育地区，通过灌注水泥浆，大大提高基岩强度，解决了基岩因裂隙发育的强度问题。
Foundation pit support pile using steel pipe pile to replace cast-in-place pile rock-socketed
The invention relates to a foundation pit support pile using a steel pipe pile to replace a cast-in-place pile rock-socketed, and belongs to the field of foundation engineering. The foundation pit support pile comprises an upper support cast-in-place pile and a lower rock-socketed steel pipe pile, wherein the rock-socketed steel pipe pile consists of a plurality of steel pipes embedded into a bedrock and cement paste poured; and the upper parts of the steel pipes extend into the support cast-in-place pile to be lapped with a pile body reinforcing bar. During construction, a hole is formed in acomplete bedrock surface, after the hole is formed, the hole is drilled by a drilling machine, the steel pipes are placed into the hole, and the cement paste is poured into the hole, so that the steel pipes and the bedrock are fixedly connected into a whole, and the rock-socketed replacement of the support cast-in-place pile is realized. The method has the advantages that the hole diameter of thesteel pipe pile is larger, the number of holes is small, the centering is easy during pipe placement, the cost is low, the construction speed is high, and the process is simple. A karst cave can be vertically spanned in a karst area, so that materials are saved, and the stability of a rock-socketed section of the support pile is ensured. Meanwhile, in a bedrock fracture development area, the strength of the bedrock is greatly improved by pouring the cement paste, and the problem of strength of the bedrock due to fracture development is solved.
本发明涉及一种用钢管桩代替灌注桩嵌岩的基坑支护桩，属地基基础工程领域。本基坑支护桩，包括上部支护灌注桩和下部嵌岩钢管桩两部分，其中嵌岩钢管桩由数根钢管嵌入基岩和灌注水泥浆组成，钢管上部伸入支护灌注桩与桩身配筋搭接。施工时，首先成孔至完整基岩面时，后停止成孔，在孔内用钻机钻成孔，后向孔内置入钢管并注入水泥浆，使之与基岩固结为一体，实现支护灌注桩嵌岩的代替。本方法的优点是钢管桩的孔径较大、孔数少、下管时易对中、费用低、施工速度快，工艺简单。在岩溶地区还可竖向跨越溶洞，节省材料和保证支护桩嵌岩段的稳定性。同时，在基岩裂隙发育地区，通过灌注水泥浆，大大提高基岩强度，解决了基岩因裂隙发育的强度问题。
Foundation pit support pile using steel pipe pile to replace cast-in-place pile rock-socketed
一种用钢管桩代替灌注桩嵌岩的基坑支护桩
WU YIYING (Autor:in) / CHEN SHUHAN (Autor:in) / LAN BING (Autor:in) / MA XINJUN (Autor:in) / XU ZHIWEI (Autor:in)
12.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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