Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full-rotation double-sleeve variable cross-section retaining wall pile forming method for cast-in-place pile
The invention relates to the technical field of cast-in-place pile construction in karst development areas, and discloses a full-rotation double-sleeve variable cross-section retaining wall pile forming method for a cast-in-place pile. The full-rotation double-sleeve variable cross-section retaining wall pile forming method for the cast-in-place pile comprises the following steps that S1, a full-rotation drilling machine is in place, so that the full-rotation drilling machine and a pile center coaxially coincide; S2, the full-rotation drilling machine presses down an outer sleeve to drill to the designed elevation according to the design requirement of a pile body; S3, an inner sleeve and the outer sleeve are coaxially arranged, and the full-rotation drilling machine presses down the inner sleeve and drills into a bearing stratum; S4, the full-rotation drilling machine is replaced and connected with a rock drill bit, and the full-rotation drilling machine drives the rock drill bit to drill to the pile bottom elevation; S5, a reinforcement cage is hoisted into a pile hole, and a pouring guiding pipe is placed; S6, concrete is poured through the pouring guiding pipe to form the pile; S7, the concrete is poured, and the inner sleeve is synchronously pulled out; and S8, the concrete is poured, the outer sleeve is synchronously pulled out, and the super-long pile body with the cross-section area gradually decreased is formed. By means of a hole forming method that the full-rotation drilling machine is used for driving the double sleeves, the effect of conveniently forming the hole in the super-long cast-in-place pile is achieved.
本发明涉及岩溶发育地区灌注桩施工技术领域，公开了灌注桩全回转双套管变截面护壁成桩方法，包括以下步骤：S1、全回转钻机就位，使全回转钻机与桩心同轴重合；S2、按照桩身设计要求，全回转钻机下压外套管钻进至设计标高；S3、内套管与外套管同轴布置，全回转钻机下压内套管，钻进至持力层面；S4、全回转钻机更换连接岩钻头，全回转钻机驱动岩钻头钻进至桩底标高；S5、吊装钢筋笼至桩孔内，并安放灌注导管；S6、通过灌注导管灌注混凝土成桩；S7、灌注混凝土及同步起拔内套管；S8、灌注混凝土及同步起拔外套管，形成截面面积逐渐递减的超长桩身。通过使用全回转钻机驱动双套管的成孔方法，实现超长灌注桩便捷成孔的效果。
Full-rotation double-sleeve variable cross-section retaining wall pile forming method for cast-in-place pile
The invention relates to the technical field of cast-in-place pile construction in karst development areas, and discloses a full-rotation double-sleeve variable cross-section retaining wall pile forming method for a cast-in-place pile. The full-rotation double-sleeve variable cross-section retaining wall pile forming method for the cast-in-place pile comprises the following steps that S1, a full-rotation drilling machine is in place, so that the full-rotation drilling machine and a pile center coaxially coincide; S2, the full-rotation drilling machine presses down an outer sleeve to drill to the designed elevation according to the design requirement of a pile body; S3, an inner sleeve and the outer sleeve are coaxially arranged, and the full-rotation drilling machine presses down the inner sleeve and drills into a bearing stratum; S4, the full-rotation drilling machine is replaced and connected with a rock drill bit, and the full-rotation drilling machine drives the rock drill bit to drill to the pile bottom elevation; S5, a reinforcement cage is hoisted into a pile hole, and a pouring guiding pipe is placed; S6, concrete is poured through the pouring guiding pipe to form the pile; S7, the concrete is poured, and the inner sleeve is synchronously pulled out; and S8, the concrete is poured, the outer sleeve is synchronously pulled out, and the super-long pile body with the cross-section area gradually decreased is formed. By means of a hole forming method that the full-rotation drilling machine is used for driving the double sleeves, the effect of conveniently forming the hole in the super-long cast-in-place pile is achieved.
本发明涉及岩溶发育地区灌注桩施工技术领域，公开了灌注桩全回转双套管变截面护壁成桩方法，包括以下步骤：S1、全回转钻机就位，使全回转钻机与桩心同轴重合；S2、按照桩身设计要求，全回转钻机下压外套管钻进至设计标高；S3、内套管与外套管同轴布置，全回转钻机下压内套管，钻进至持力层面；S4、全回转钻机更换连接岩钻头，全回转钻机驱动岩钻头钻进至桩底标高；S5、吊装钢筋笼至桩孔内，并安放灌注导管；S6、通过灌注导管灌注混凝土成桩；S7、灌注混凝土及同步起拔内套管；S8、灌注混凝土及同步起拔外套管，形成截面面积逐渐递减的超长桩身。通过使用全回转钻机驱动双套管的成孔方法，实现超长灌注桩便捷成孔的效果。
Full-rotation double-sleeve variable cross-section retaining wall pile forming method for cast-in-place pile
灌注桩全回转双套管变截面护壁成桩方法
LEI BIN (Autor:in) / LIAO QIMING (Autor:in) / CHEN XIAOHUI (Autor:in) / WANG GANG (Autor:in) / TONG XIN (Autor:in) / LIU XIAOMIN (Autor:in) / YUAN WEI (Autor:in) / MO LI (Autor:in)
03.09.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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