A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Laying structure of geomembrane at joint part of diaphragm wall, cofferdam and construction method
The invention provides a laying structure of a geomembrane at a joint part of an anti-seepage wall, a cofferdam and a construction method, the laying structure is used in the cofferdam in which the axis of the anti-seepage wall and the axis of a cofferdam body are arranged in a staggered manner, the laying structure comprises a first geomembrane arranged at the top of the anti-seepage wall, and one end of the first geomembrane is connected with the top of the anti-seepage wall; the other end of the first geomembrane vertically extends upwards, and the cross section of the first geomembrane is in a zigzag shape. According to the invention, the zigzag first geomembrane is vertically arranged, so that the tensile strain of the geomembrane caused by differential settlement between the diaphragm wall and the weir body is obviously reduced, and the overburden pressure of the geomembrane at the joint part of the diaphragm wall, namely the first geomembrane, is greatly reduced by limiting the thickness of an overburden layer on the geomembrane; therefore, the first geomembrane horizontal expansion joint can be freely unfolded, the risk of tension fracture and damage of the geomembrane is reduced, and the safety of the joint part is improved.
本发明提供一种防渗墙接头部位土工膜的铺设结构、围堰及施工方法，用于防渗墙与堰体轴线错距布置的围堰中，铺设结构包括布置在防渗墙顶部的第一土工膜，所述第一土工膜的一端与防渗墙顶部连接，所述第一土工膜的另一端竖直向上延伸，所述第一土工膜的横截面呈之字形。本发明通过将之字形的第一土工膜竖直设置，显著减小了土工膜因防渗墙与堰体之间的差异沉降引起的拉伸应变，通过限制土工膜上覆土层厚度，大大减小了防渗墙接头部位土工膜即第一土工膜的上覆压力，使得第一土工膜水平伸缩节能够自由展开，降低了土工膜拉裂破损的风险，提高了接头部位的安全性。
Laying structure of geomembrane at joint part of diaphragm wall, cofferdam and construction method
The invention provides a laying structure of a geomembrane at a joint part of an anti-seepage wall, a cofferdam and a construction method, the laying structure is used in the cofferdam in which the axis of the anti-seepage wall and the axis of a cofferdam body are arranged in a staggered manner, the laying structure comprises a first geomembrane arranged at the top of the anti-seepage wall, and one end of the first geomembrane is connected with the top of the anti-seepage wall; the other end of the first geomembrane vertically extends upwards, and the cross section of the first geomembrane is in a zigzag shape. According to the invention, the zigzag first geomembrane is vertically arranged, so that the tensile strain of the geomembrane caused by differential settlement between the diaphragm wall and the weir body is obviously reduced, and the overburden pressure of the geomembrane at the joint part of the diaphragm wall, namely the first geomembrane, is greatly reduced by limiting the thickness of an overburden layer on the geomembrane; therefore, the first geomembrane horizontal expansion joint can be freely unfolded, the risk of tension fracture and damage of the geomembrane is reduced, and the safety of the joint part is improved.
本发明提供一种防渗墙接头部位土工膜的铺设结构、围堰及施工方法，用于防渗墙与堰体轴线错距布置的围堰中，铺设结构包括布置在防渗墙顶部的第一土工膜，所述第一土工膜的一端与防渗墙顶部连接，所述第一土工膜的另一端竖直向上延伸，所述第一土工膜的横截面呈之字形。本发明通过将之字形的第一土工膜竖直设置，显著减小了土工膜因防渗墙与堰体之间的差异沉降引起的拉伸应变，通过限制土工膜上覆土层厚度，大大减小了防渗墙接头部位土工膜即第一土工膜的上覆压力，使得第一土工膜水平伸缩节能够自由展开，降低了土工膜拉裂破损的风险，提高了接头部位的安全性。
Laying structure of geomembrane at joint part of diaphragm wall, cofferdam and construction method
一种防渗墙接头部位土工膜的铺设结构、围堰及施工方法
XU TANGJIN (author) / WENG YONGHONG (author) / ZHOU SONG (author) / QI ZUFANG (author) / LI HENG (author) / RAO ZHIWEN (author) / HU TIANQING (author) / WANG JIE (author) / CUI JINPENG (author) / XU PENG (author)
2024-03-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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