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A platform for research: civil engineering, architecture and urbanism
Water-rich silty-fine sand deep foundation pit water stop construction method
The invention relates to a water-rich silty-fine sand deep foundation pit water stop construction method, and belongs to the technical field of deep foundation pit construction. Comprising the following steps: step 1, constructing a cast-in-situ bored fender post, and breaking a pile head to construct a top beam after the concrete strength of the cast-in-situ bored fender post meets the requirement; secondly, multiple rows of external high-pressure jet grouting piles are constructed on the outer sides of the cast-in-situ bored fender posts; thirdly, sleeve valve pipe double-liquid grouting is conducted on the peripheries of the cast-in-situ bored fender posts, the outer high-pressure jet grouting piles and the inner high-pressure jet grouting piles; fourthly, deep foundation pit earth excavation is conducted; fifthly, the bottom of the deep foundation pit is subjected to concrete bottom sealing; sixthly, small concrete low walls are poured on the periphery of the bottom of the deep foundation pit; seventhly, after construction is completed, a lining wall in the deep foundation pit is constructed; the problem that foundation pit excavation cannot be achieved in deep foundation pit water-stopping non-precipitation construction under the current water-rich silty-fine sand geological condition is solved.
本发明涉及一种富水粉细砂深基坑止水施工方法，属于深基坑施工技术领域；包括下部步骤：步骤一，施工钻孔灌注围护桩，在钻孔灌注围护桩的混凝土强度满足要求后破除桩头来施作冠梁；步骤二：在钻孔灌注围护桩的外侧进行多排外部高压旋喷桩的施工；步骤三：在钻孔灌注围护桩以及外部高压旋喷桩、内部高压旋喷桩的周围都进行袖阀管双液注浆；步骤四：深基坑土方开挖；步骤五：将深基坑底部进行混凝土封底；步骤六：将深基坑的底部四周浇筑混凝土小矮墙；步骤七：施工完毕后进行深基坑内部的内衬墙施工；解决了目前富水粉细砂地质条件下深基坑止水不降水施工中不能实现基坑开挖的问题。
Water-rich silty-fine sand deep foundation pit water stop construction method
The invention relates to a water-rich silty-fine sand deep foundation pit water stop construction method, and belongs to the technical field of deep foundation pit construction. Comprising the following steps: step 1, constructing a cast-in-situ bored fender post, and breaking a pile head to construct a top beam after the concrete strength of the cast-in-situ bored fender post meets the requirement; secondly, multiple rows of external high-pressure jet grouting piles are constructed on the outer sides of the cast-in-situ bored fender posts; thirdly, sleeve valve pipe double-liquid grouting is conducted on the peripheries of the cast-in-situ bored fender posts, the outer high-pressure jet grouting piles and the inner high-pressure jet grouting piles; fourthly, deep foundation pit earth excavation is conducted; fifthly, the bottom of the deep foundation pit is subjected to concrete bottom sealing; sixthly, small concrete low walls are poured on the periphery of the bottom of the deep foundation pit; seventhly, after construction is completed, a lining wall in the deep foundation pit is constructed; the problem that foundation pit excavation cannot be achieved in deep foundation pit water-stopping non-precipitation construction under the current water-rich silty-fine sand geological condition is solved.
本发明涉及一种富水粉细砂深基坑止水施工方法，属于深基坑施工技术领域；包括下部步骤：步骤一，施工钻孔灌注围护桩，在钻孔灌注围护桩的混凝土强度满足要求后破除桩头来施作冠梁；步骤二：在钻孔灌注围护桩的外侧进行多排外部高压旋喷桩的施工；步骤三：在钻孔灌注围护桩以及外部高压旋喷桩、内部高压旋喷桩的周围都进行袖阀管双液注浆；步骤四：深基坑土方开挖；步骤五：将深基坑底部进行混凝土封底；步骤六：将深基坑的底部四周浇筑混凝土小矮墙；步骤七：施工完毕后进行深基坑内部的内衬墙施工；解决了目前富水粉细砂地质条件下深基坑止水不降水施工中不能实现基坑开挖的问题。
Water-rich silty-fine sand deep foundation pit water stop construction method
一种富水粉细砂深基坑止水施工方法
WEI LIANG (author) / WEI JUN (author) / ZHAO YONGFENG (author) / GUO RUIFENG (author) / GAO XIAOGUANG (author) / DU WENZHONG (author) / YANG QINGFENG (author) / TIAN HAIPENG (author) / LU TIANHAI (author) / HUANG FENG (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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