Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Front-supporting and rear-pulling type foundation pit support system and construction method thereof
The invention discloses a front-supporting and rear-pulling type foundation pit support system and a construction method thereof. The foundation pit support system comprises a support pile, a capping beam, a front-supporting type grouting steel pipe pile, and a rear-pulling type grouting steel pipe pile; the support pile is vertically constructed in a soil body to form a foundation pit support; the capping beam is arranged on the support pile; the front-supporting type grouting steel pipe pile is obliquely buried in the soil body in a foundation pit, the front-supporting type grouting steel pipe pile is anchored on the capping beam, and grout is injected into a pipe section, below the elevation of the bottom of the foundation pit, of the front-supporting type grouting steel pipe pile; and the rear-pulling type grouting steel pipe pile is obliquely buried in a soil body outside the foundation pit, the rear-pulling type grouting steel pipe pile is anchored on the capping beam, grout is injected into the whole rear-pulling type grouting steel pipe pile, and the rear-pulling type grouting steel pipe pile and the front-supporting type grouting steel pipe pile are alternately distributed. According to the system and the construction method thereof, the arrangement density of the front-supporting type grouting steel pipe piles in the length direction of the support pile can be reduced, the reliability, stability, safety and overall strength of the support system are improved, and the excavation difficulty of earth beside the foundation pit is reduced.
本发明公开一种前撑后拉式基坑围护体系及其施工方法，该基坑围护体系包括围护桩，竖向施工在土体内，形成基坑围护；压顶梁，设置在所述围护桩上；前撑式注浆钢管桩，倾斜埋入在基坑内的土体内，所述前撑式注浆钢管桩锚固在所述压顶梁上，所述前撑式注浆钢管桩在基坑底部标高以下的管段内注入有浆液；后拉式注浆钢管桩，倾斜埋入在基坑外的土体内，所述后拉式注浆钢管桩锚固在所述压顶梁上，所述后拉式注浆钢管桩在全段管内注入有浆液，所述后拉式注浆钢管桩与所述前撑式注浆钢管桩交替分布。本发明能够降低前撑式注浆钢管桩沿围护桩长度方向的布置密度，提高了围护体系的可靠性、稳定性、安全性和整体强度，降低了基坑边土方开挖难度。
Front-supporting and rear-pulling type foundation pit support system and construction method thereof
The invention discloses a front-supporting and rear-pulling type foundation pit support system and a construction method thereof. The foundation pit support system comprises a support pile, a capping beam, a front-supporting type grouting steel pipe pile, and a rear-pulling type grouting steel pipe pile; the support pile is vertically constructed in a soil body to form a foundation pit support; the capping beam is arranged on the support pile; the front-supporting type grouting steel pipe pile is obliquely buried in the soil body in a foundation pit, the front-supporting type grouting steel pipe pile is anchored on the capping beam, and grout is injected into a pipe section, below the elevation of the bottom of the foundation pit, of the front-supporting type grouting steel pipe pile; and the rear-pulling type grouting steel pipe pile is obliquely buried in a soil body outside the foundation pit, the rear-pulling type grouting steel pipe pile is anchored on the capping beam, grout is injected into the whole rear-pulling type grouting steel pipe pile, and the rear-pulling type grouting steel pipe pile and the front-supporting type grouting steel pipe pile are alternately distributed. According to the system and the construction method thereof, the arrangement density of the front-supporting type grouting steel pipe piles in the length direction of the support pile can be reduced, the reliability, stability, safety and overall strength of the support system are improved, and the excavation difficulty of earth beside the foundation pit is reduced.
本发明公开一种前撑后拉式基坑围护体系及其施工方法，该基坑围护体系包括围护桩，竖向施工在土体内，形成基坑围护；压顶梁，设置在所述围护桩上；前撑式注浆钢管桩，倾斜埋入在基坑内的土体内，所述前撑式注浆钢管桩锚固在所述压顶梁上，所述前撑式注浆钢管桩在基坑底部标高以下的管段内注入有浆液；后拉式注浆钢管桩，倾斜埋入在基坑外的土体内，所述后拉式注浆钢管桩锚固在所述压顶梁上，所述后拉式注浆钢管桩在全段管内注入有浆液，所述后拉式注浆钢管桩与所述前撑式注浆钢管桩交替分布。本发明能够降低前撑式注浆钢管桩沿围护桩长度方向的布置密度，提高了围护体系的可靠性、稳定性、安全性和整体强度，降低了基坑边土方开挖难度。
Front-supporting and rear-pulling type foundation pit support system and construction method thereof
前撑后拉式基坑围护体系及其施工方法
YU YALEI (Autor:in) / ZHOU WENZUO (Autor:in)
16.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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