Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Underground diaphragm wall groove wall reinforcing construction method under unfavorable geological conditions
The invention relates to an underground diaphragm wall groove wall reinforcing construction method under unfavorable geological conditions, which comprises the following steps of: determining the width W and the construction position of an underground diaphragm wall groove section according to a construction drawing, marking, determining the construction position of a three-axis stirring pile according to the width of the underground diaphragm wall groove section, and constructing a three-axis stirring pile; bentonite slurry and cement slurry are prepared according to the diameter of the three-shaft mixing piles according to a certain mixing proportion, undisturbed soil is adopted for manufacturing test blocks, the strength and anti-seepage performance indexes of the test blocks after 28 days are tested, construction is started, the three-shaft mixing piles are sequentially fixed to the two sides of the position of the underground diaphragm wall for grouting, mixing, lifting, cleaning and shifting, and construction of the next set of piles is conducted. And in the construction process, the soil facing side is subjected to casing driving construction, the pit facing side is subjected to lap joint construction, and after the three-shaft stirring pile construction is completed, underground diaphragm wall construction is conducted. The problems that under the unfavorable geological conditions, the conventional ground wall groove wall reinforcing included angle narrow gap is poor in self-stability and prone to collapsing, and the ground wall surface is uneven after excavation can be effectively solved.
本发明涉及一种不良地质条件下的地下连续墙槽壁加固施工方法，其步骤为：根据施工图纸确定地下连续墙槽段宽度W及施工位置，并进行标记，根据地下连续墙槽段宽度确定三轴搅拌桩施工位置，三轴搅拌桩直径按照一定配合比制备膨润土泥浆和水泥浆液，采用原状土进行试块制作，并测试28d后试块强度及抗渗性能指标，开始施工，依次将三轴搅拌桩固定在地下连续墙位置两侧进行注浆、搅拌、提升、清洗移位，并进行下一组桩的施工，施工过程中迎土侧采用套打施工，迎坑侧采用搭接施工，三轴搅拌桩施工完成后，进行地下连续墙施工。本发明可以有效解决不良地质条件下常规地墙槽壁加固夹角狭小间隙处自稳性差易塌落及开挖后地墙面不平整的问题。
Underground diaphragm wall groove wall reinforcing construction method under unfavorable geological conditions
The invention relates to an underground diaphragm wall groove wall reinforcing construction method under unfavorable geological conditions, which comprises the following steps of: determining the width W and the construction position of an underground diaphragm wall groove section according to a construction drawing, marking, determining the construction position of a three-axis stirring pile according to the width of the underground diaphragm wall groove section, and constructing a three-axis stirring pile; bentonite slurry and cement slurry are prepared according to the diameter of the three-shaft mixing piles according to a certain mixing proportion, undisturbed soil is adopted for manufacturing test blocks, the strength and anti-seepage performance indexes of the test blocks after 28 days are tested, construction is started, the three-shaft mixing piles are sequentially fixed to the two sides of the position of the underground diaphragm wall for grouting, mixing, lifting, cleaning and shifting, and construction of the next set of piles is conducted. And in the construction process, the soil facing side is subjected to casing driving construction, the pit facing side is subjected to lap joint construction, and after the three-shaft stirring pile construction is completed, underground diaphragm wall construction is conducted. The problems that under the unfavorable geological conditions, the conventional ground wall groove wall reinforcing included angle narrow gap is poor in self-stability and prone to collapsing, and the ground wall surface is uneven after excavation can be effectively solved.
本发明涉及一种不良地质条件下的地下连续墙槽壁加固施工方法，其步骤为：根据施工图纸确定地下连续墙槽段宽度W及施工位置，并进行标记，根据地下连续墙槽段宽度确定三轴搅拌桩施工位置，三轴搅拌桩直径按照一定配合比制备膨润土泥浆和水泥浆液，采用原状土进行试块制作，并测试28d后试块强度及抗渗性能指标，开始施工，依次将三轴搅拌桩固定在地下连续墙位置两侧进行注浆、搅拌、提升、清洗移位，并进行下一组桩的施工，施工过程中迎土侧采用套打施工，迎坑侧采用搭接施工，三轴搅拌桩施工完成后，进行地下连续墙施工。本发明可以有效解决不良地质条件下常规地墙槽壁加固夹角狭小间隙处自稳性差易塌落及开挖后地墙面不平整的问题。
Underground diaphragm wall groove wall reinforcing construction method under unfavorable geological conditions
一种不良地质条件下的地下连续墙槽壁加固施工方法
LUO YUNFENG (Autor:in) / LU SANPING (Autor:in) / LI YUFENG (Autor:in) / HAN ZELIANG (Autor:in) / YANG ZISONG (Autor:in) / WANG HAIJUN (Autor:in) / ZHANG ZHEBIN (Autor:in) / ZOU FENG (Autor:in) / LI JIYONG (Autor:in) / HUANG ZETAO (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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