A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stiff composite pile construction process
The invention discloses a stiff composite pile construction process. The stiff composite pile construction process comprises the following steps that S1, carrier pile construction is conducted, specifically, a, a cement-soil mixing pile with the diameter of phi 500-900 mm is adopted for a carrier pile, full pile casing follow-up impact hole forming is conducted, cement mortar or fine aggregate concrete is poured into a hole, the cement doping amount in an empty drilling area is 9%-11%, and the cement doping amount in an effective pile length area is 17%-21%; and b, carrier construction is completed; S2, a pile casing is pulled out by a carrier pile machine; and S3, a precast pile body is put down, and the pile is conveyed to the designed elevation in a static pressure or hammering mode, a, the precast pile body adopts a prestressed concrete pipe pile, the effective pile length is 42 m, and the precast pile body is constructed within 6 h after carrier construction is completed. According to the stiff composite pile construction process, construction is convenient, the secondary compaction and reinforcement effect on filling soil around a pile body is achieved, the physical and mechanical properties of a soil body around the pile are effectively improved, the stiff composite pile construction process can adapt to complex geological conditions such as deep filling soil, the construction process is different from a conventional soil compaction process, and the influence on the surrounding environment is greatly reduced.
本发明公开了一种劲性复合桩施工工艺，包括以下步骤：S1：载体桩施工，a.载体桩采用φ500‑900mm水泥土搅拌桩，全护筒跟进冲击成孔，孔内灌注水泥砂浆或细石混凝土，空钻区域内水泥掺入量为9‑11％，有效桩长区域水泥掺入量为17‑21％；b.载体施工完成。S2：载体桩机上拔护筒，S3：下放预制桩身，并采用静压或锤击方式送桩至设计标高，a.预制桩身采用预应力混凝土管桩，有效桩长42m，预制桩身在载体施工完成后的6h内施工。该劲性复合桩施工工艺，本发明提供的劲性复合桩施工工艺，施工方便，对桩身周围填土有二次挤密加固作用，有效改善桩周土体的物理力学性质，能适应深厚填土等复杂地质条件，施工工艺有别于常规挤土工艺，大大降低对周边环境的影响。
Stiff composite pile construction process
The invention discloses a stiff composite pile construction process. The stiff composite pile construction process comprises the following steps that S1, carrier pile construction is conducted, specifically, a, a cement-soil mixing pile with the diameter of phi 500-900 mm is adopted for a carrier pile, full pile casing follow-up impact hole forming is conducted, cement mortar or fine aggregate concrete is poured into a hole, the cement doping amount in an empty drilling area is 9%-11%, and the cement doping amount in an effective pile length area is 17%-21%; and b, carrier construction is completed; S2, a pile casing is pulled out by a carrier pile machine; and S3, a precast pile body is put down, and the pile is conveyed to the designed elevation in a static pressure or hammering mode, a, the precast pile body adopts a prestressed concrete pipe pile, the effective pile length is 42 m, and the precast pile body is constructed within 6 h after carrier construction is completed. According to the stiff composite pile construction process, construction is convenient, the secondary compaction and reinforcement effect on filling soil around a pile body is achieved, the physical and mechanical properties of a soil body around the pile are effectively improved, the stiff composite pile construction process can adapt to complex geological conditions such as deep filling soil, the construction process is different from a conventional soil compaction process, and the influence on the surrounding environment is greatly reduced.
本发明公开了一种劲性复合桩施工工艺，包括以下步骤：S1：载体桩施工，a.载体桩采用φ500‑900mm水泥土搅拌桩，全护筒跟进冲击成孔，孔内灌注水泥砂浆或细石混凝土，空钻区域内水泥掺入量为9‑11％，有效桩长区域水泥掺入量为17‑21％；b.载体施工完成。S2：载体桩机上拔护筒，S3：下放预制桩身，并采用静压或锤击方式送桩至设计标高，a.预制桩身采用预应力混凝土管桩，有效桩长42m，预制桩身在载体施工完成后的6h内施工。该劲性复合桩施工工艺，本发明提供的劲性复合桩施工工艺，施工方便，对桩身周围填土有二次挤密加固作用，有效改善桩周土体的物理力学性质，能适应深厚填土等复杂地质条件，施工工艺有别于常规挤土工艺，大大降低对周边环境的影响。
Stiff composite pile construction process
一种劲性复合桩施工工艺
LI LONG (author) / HU HAIBIN (author) / DENG YAGUANG (author) / LI SHUANGQING (author) / LIAN XIAODONG (author) / ZHANG YUNSHUI (author) / GENG YUPING (author)
2021-08-10
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen