Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Combined enclosure structure for soft soil foundation pit and construction method of combined enclosure structure
The invention discloses a combined enclosure structure for a soft soil foundation pit and a construction method of the combined enclosure structure. A plurality of enclosure piles are vertically inserted in the edge of the foundation pit and used for retaining soil and water; the centers of all the pile tops are connected into a straight line, and all the pile tops are connected through a capping beam; the bottoms of the inclined piles penetrate into soil on the inner side of the foundation pit, and a coping plate is poured on the tops of the inclined piles and fixedly connected with a coping beam to connect the fender piles, the inclined piles, the coping plate and the coping beam into a whole. One end of the recoverable anchor rod sequentially and obliquely penetrates through the first connecting through hole and the second connecting through hole and then is inserted into a soil body on the outer side of the foundation pit, and the recoverable anchor rod is used for limiting lateral displacement of the inclined pile and the fender post. Horizontal loads are borne through the inclined piles, and compared with traditional vertical piles, the stress performance of pile bodies is greatly improved; in addition, a soil body reinforcing area is arranged at the bottom of the inclined pile, the property of soft soil is improved, meanwhile, the pulling force of the anchor rod is actively used for sharing the lateral pressure acting on the inclined pile, the lateral displacement of the inclined pile can be limited, and the stress of the soil body reinforcing area at the root of the inclined pile is reduced.
本发明公开了一种用于软土地基基坑的组合式围护结构及其施工方法，多个围护桩竖直插设在基坑边缘，用于挡土与止水；各桩顶中心连接成一直线，且各桩顶通过压顶梁连接；斜桩底部深入基坑内侧土体中，顶部浇筑有压顶板，压顶板与压顶梁固定连接将围护桩、斜桩、压顶板与压顶梁连成一体；可回收锚杆一端依次斜向穿过第一连接通孔、第二连接通孔后插设在基坑外侧土体中，用于限制斜桩与围护桩的侧向位移。本发明通过斜桩承担水平荷载，相较传统竖直桩极大地改善了桩身的受力性能；此外，在斜桩底部设置土体加固区，改善软土性质的同时主动利用锚杆的拉力分担作用在斜桩上的侧压力，能限制斜桩的侧向位移，减少斜桩根部土体加固区的受力。
Combined enclosure structure for soft soil foundation pit and construction method of combined enclosure structure
The invention discloses a combined enclosure structure for a soft soil foundation pit and a construction method of the combined enclosure structure. A plurality of enclosure piles are vertically inserted in the edge of the foundation pit and used for retaining soil and water; the centers of all the pile tops are connected into a straight line, and all the pile tops are connected through a capping beam; the bottoms of the inclined piles penetrate into soil on the inner side of the foundation pit, and a coping plate is poured on the tops of the inclined piles and fixedly connected with a coping beam to connect the fender piles, the inclined piles, the coping plate and the coping beam into a whole. One end of the recoverable anchor rod sequentially and obliquely penetrates through the first connecting through hole and the second connecting through hole and then is inserted into a soil body on the outer side of the foundation pit, and the recoverable anchor rod is used for limiting lateral displacement of the inclined pile and the fender post. Horizontal loads are borne through the inclined piles, and compared with traditional vertical piles, the stress performance of pile bodies is greatly improved; in addition, a soil body reinforcing area is arranged at the bottom of the inclined pile, the property of soft soil is improved, meanwhile, the pulling force of the anchor rod is actively used for sharing the lateral pressure acting on the inclined pile, the lateral displacement of the inclined pile can be limited, and the stress of the soil body reinforcing area at the root of the inclined pile is reduced.
本发明公开了一种用于软土地基基坑的组合式围护结构及其施工方法，多个围护桩竖直插设在基坑边缘，用于挡土与止水；各桩顶中心连接成一直线，且各桩顶通过压顶梁连接；斜桩底部深入基坑内侧土体中，顶部浇筑有压顶板，压顶板与压顶梁固定连接将围护桩、斜桩、压顶板与压顶梁连成一体；可回收锚杆一端依次斜向穿过第一连接通孔、第二连接通孔后插设在基坑外侧土体中，用于限制斜桩与围护桩的侧向位移。本发明通过斜桩承担水平荷载，相较传统竖直桩极大地改善了桩身的受力性能；此外，在斜桩底部设置土体加固区，改善软土性质的同时主动利用锚杆的拉力分担作用在斜桩上的侧压力，能限制斜桩的侧向位移，减少斜桩根部土体加固区的受力。
Combined enclosure structure for soft soil foundation pit and construction method of combined enclosure structure
一种用于软土地基基坑的组合式围护结构及其施工方法
ZHUANG YIZHOU (Autor:in) / LIN XINBEI (Autor:in)
25.10.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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