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A platform for research: civil engineering, architecture and urbanism
Construction process of deep local expansion underground diaphragm wall
The invention discloses a construction process of a deep local expansion underground diaphragm wall, which comprises the following steps: S1, after a site is leveled, measured and lofted, a ground wall groove is dug in the site, the length of the ground wall groove is determined according to the length of the underground diaphragm wall to be built, and then the side wall of the ground wall groove is reinforced to form a reinforced layer; s2, after the perpendicularity of the side wall of the ground wall groove is detected and is qualified, the bottom expanding rotary drilling machine is moved to the position of the ground wall groove; s3, the bottom expanding rotary drilling machine lowers a drill rod till the position below the bottom expanding drill bit reaches the design position of the local expansion section of the underground diaphragm wall, and the perpendicularity of the drill rod is controlled in the drill rod lowering process; and S4, the positions where the local expansion sections are designed are sequentially subjected to rotary digging expansion section by section in the direction of the ground wall groove. Compared with the prior art, the method has the advantages that the vertical bearing capacity of the underground diaphragm wall is improved, the insertion depth of the underground diaphragm wall can be reduced, the side pile engineering amount is reduced, waste of construction materials is avoided, the engineering cost is saved, and the construction period is shortened.
本发明公开了一种深层局部扩张地下连续墙的施工工艺，包括以下步骤：S1、场地平整测量放样后，在场地上挖出地墙槽，地墙槽的长度根据需要建成的地下连续墙的长度而定，然后对地墙槽的侧壁进行加固，形成加固层；S2、完成地墙槽侧壁垂直度检测并合格后，扩底旋挖机移动至地墙槽位置；S3、扩底旋挖机下放钻杆，直至扩底钻头下方至地下连续墙的局部扩张段的设计位置，下钻杆的过程控制钻杆的垂直度；S4、对设计局部扩张段的位置沿地墙槽方向依次逐段旋挖扩张。与现有技术相比的优点在于：本发明增加了地下连续墙的竖向承载能力，可减少地下连续墙插入深度，减少边桩工程量，避免施工材料浪费，节约工程造价，缩短工期。
Construction process of deep local expansion underground diaphragm wall
The invention discloses a construction process of a deep local expansion underground diaphragm wall, which comprises the following steps: S1, after a site is leveled, measured and lofted, a ground wall groove is dug in the site, the length of the ground wall groove is determined according to the length of the underground diaphragm wall to be built, and then the side wall of the ground wall groove is reinforced to form a reinforced layer; s2, after the perpendicularity of the side wall of the ground wall groove is detected and is qualified, the bottom expanding rotary drilling machine is moved to the position of the ground wall groove; s3, the bottom expanding rotary drilling machine lowers a drill rod till the position below the bottom expanding drill bit reaches the design position of the local expansion section of the underground diaphragm wall, and the perpendicularity of the drill rod is controlled in the drill rod lowering process; and S4, the positions where the local expansion sections are designed are sequentially subjected to rotary digging expansion section by section in the direction of the ground wall groove. Compared with the prior art, the method has the advantages that the vertical bearing capacity of the underground diaphragm wall is improved, the insertion depth of the underground diaphragm wall can be reduced, the side pile engineering amount is reduced, waste of construction materials is avoided, the engineering cost is saved, and the construction period is shortened.
本发明公开了一种深层局部扩张地下连续墙的施工工艺，包括以下步骤：S1、场地平整测量放样后，在场地上挖出地墙槽，地墙槽的长度根据需要建成的地下连续墙的长度而定，然后对地墙槽的侧壁进行加固，形成加固层；S2、完成地墙槽侧壁垂直度检测并合格后，扩底旋挖机移动至地墙槽位置；S3、扩底旋挖机下放钻杆，直至扩底钻头下方至地下连续墙的局部扩张段的设计位置，下钻杆的过程控制钻杆的垂直度；S4、对设计局部扩张段的位置沿地墙槽方向依次逐段旋挖扩张。与现有技术相比的优点在于：本发明增加了地下连续墙的竖向承载能力，可减少地下连续墙插入深度，减少边桩工程量，避免施工材料浪费，节约工程造价，缩短工期。
Construction process of deep local expansion underground diaphragm wall
一种深层局部扩张地下连续墙的施工工艺
QIAN HAIBO (author) / GENG ZHE (author) / XIA CHANG (author) / ZHANG JINGJING (author) / LIU LISHA (author)
2024-02-27
Patent
Electronic Resource
Chinese
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