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A platform for research: civil engineering, architecture and urbanism
Construction method of underground diaphragm wall in water-rich silty-fine sand layer
The invention discloses a construction method of an underground diaphragm wall in a water-rich silty-fine sand layer. The construction method comprises the following steps of guide wall construction,tube well advanced precipitation, slurry preparation, grooving, groove cleaning and slurry replacement, wall brushing, reinforcement cage manufacturing, reinforcement cage hoisting, sand prevention layer arrangement and concrete pouring. According to the construction method of the underground diaphragm wall in the water-rich silty-fine sand layer, firstly, the self-stability of groove walls is improved through advanced precipitation of tube wells in a foundation pit which are constructed in advance; and during grooving, sodium bentonite is adopted for slurry manufacturing, and thin and tough slurry cakes are formed on the groove walls, so that the collapse resistance is improved.
本发明揭示了一种富水粉细砂层地下连续墙的施工方法，包括如下步骤：导墙施工、管井超前降水、泥浆制备、成槽、清槽换浆、刷壁、钢筋笼制作、吊放钢筋笼并设置防砂层、浇筑混凝土。本发明揭示的一种富水粉细砂层地下连续墙的施工方法，首先通过提前施工的基坑内管井超前降水，提高槽壁自稳性；成槽时采用钠基膨润土进行泥浆，提高槽壁形成薄而韧的泥皮，提高了防塌性。
Construction method of underground diaphragm wall in water-rich silty-fine sand layer
The invention discloses a construction method of an underground diaphragm wall in a water-rich silty-fine sand layer. The construction method comprises the following steps of guide wall construction,tube well advanced precipitation, slurry preparation, grooving, groove cleaning and slurry replacement, wall brushing, reinforcement cage manufacturing, reinforcement cage hoisting, sand prevention layer arrangement and concrete pouring. According to the construction method of the underground diaphragm wall in the water-rich silty-fine sand layer, firstly, the self-stability of groove walls is improved through advanced precipitation of tube wells in a foundation pit which are constructed in advance; and during grooving, sodium bentonite is adopted for slurry manufacturing, and thin and tough slurry cakes are formed on the groove walls, so that the collapse resistance is improved.
本发明揭示了一种富水粉细砂层地下连续墙的施工方法，包括如下步骤：导墙施工、管井超前降水、泥浆制备、成槽、清槽换浆、刷壁、钢筋笼制作、吊放钢筋笼并设置防砂层、浇筑混凝土。本发明揭示的一种富水粉细砂层地下连续墙的施工方法，首先通过提前施工的基坑内管井超前降水，提高槽壁自稳性；成槽时采用钠基膨润土进行泥浆，提高槽壁形成薄而韧的泥皮，提高了防塌性。
Construction method of underground diaphragm wall in water-rich silty-fine sand layer
一种富水粉细砂层地下连续墙的施工方法
ZHENG SHUCHAO (author) / WEI YUANBO (author) / WANG NING (author) / YAN XING (author) / WU QIONG (author) / ZHANG YUFENG (author) / SHEN QIANGRU (author) / CAO HUI (author) / QIAN WANGPING (author) / WANG YI (author)
2021-01-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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