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A platform for research: civil engineering, architecture and urbanism
Pile casing device for cast-in-place pile construction in karst cave and cast-in-place pile construction method
The invention relates to the technical field of foundation and foundation engineering, and particularly discloses a pile casing device for construction of a cast-in-place pile in a karst cave and a cast-in-place pile construction method.The pile casing device comprises a straight-barrel-shaped upper pile casing, a straight-barrel-shaped lower pile casing and a plugging assembly arranged on the periphery of the lower pile casing in a surrounding mode; wherein the lower pile casing comprises a lining framework, a steel wire mesh layer and a waterproof cloth layer which are sequentially arranged from inside to outside; an opening pile shoe matched with the lining framework in diameter is fixed to the bottom of the lining framework. The waterproof cloth layer comprises a plurality of pieces of waterproof cloth which are in lap joint in sequence and cover the steel wire mesh layer, and the waterproof cloth is bound and fixed to the lining framework; a positioning hole matched with the top of the lining framework is formed in the bottom of the upper protection cylinder, and the lining framework is inserted into the positioning hole. The lining framework of the lower pile casing and the reinforcement cage form a double-layer longitudinal stress structure, the steel wire mesh layer and the waterproof cloth layer provide circumferential constraint for the concrete protection layer of the cast-in-place pile, and the cast-in-place pile which is high in strength, resistant to buckling and good in horizontal stability is formed.
本发明涉及地基与基础工程技术领域，具体公开了一种溶洞中灌注桩施工所用的护筒装置及灌注桩施工方法，护筒装置包括直筒状的上部护筒和下部护筒，以及环绕设置在下部护筒外周的封堵组件，其中：下部护筒包括由内而外依次设置的内衬骨架、钢丝网层和防水布层；内衬骨架的底部固定有与之直径相匹配的开口桩靴；防水布层包括依次搭接并覆盖在钢丝网层上的若干片防水布，且防水布与内衬骨架绑扎固定；上部护筒的底部开设有与内衬骨架顶部相匹配的定位孔，内衬骨架插接在定位孔内。本发明中下部护筒的内衬骨架与钢筋笼组成双层纵向受力结构，以及钢丝网层和防水布层对灌注桩的混凝土保护层提供环向约束，形成强度高、抗屈曲、水平稳定性好的灌注桩。
Pile casing device for cast-in-place pile construction in karst cave and cast-in-place pile construction method
The invention relates to the technical field of foundation and foundation engineering, and particularly discloses a pile casing device for construction of a cast-in-place pile in a karst cave and a cast-in-place pile construction method.The pile casing device comprises a straight-barrel-shaped upper pile casing, a straight-barrel-shaped lower pile casing and a plugging assembly arranged on the periphery of the lower pile casing in a surrounding mode; wherein the lower pile casing comprises a lining framework, a steel wire mesh layer and a waterproof cloth layer which are sequentially arranged from inside to outside; an opening pile shoe matched with the lining framework in diameter is fixed to the bottom of the lining framework. The waterproof cloth layer comprises a plurality of pieces of waterproof cloth which are in lap joint in sequence and cover the steel wire mesh layer, and the waterproof cloth is bound and fixed to the lining framework; a positioning hole matched with the top of the lining framework is formed in the bottom of the upper protection cylinder, and the lining framework is inserted into the positioning hole. The lining framework of the lower pile casing and the reinforcement cage form a double-layer longitudinal stress structure, the steel wire mesh layer and the waterproof cloth layer provide circumferential constraint for the concrete protection layer of the cast-in-place pile, and the cast-in-place pile which is high in strength, resistant to buckling and good in horizontal stability is formed.
本发明涉及地基与基础工程技术领域，具体公开了一种溶洞中灌注桩施工所用的护筒装置及灌注桩施工方法，护筒装置包括直筒状的上部护筒和下部护筒，以及环绕设置在下部护筒外周的封堵组件，其中：下部护筒包括由内而外依次设置的内衬骨架、钢丝网层和防水布层；内衬骨架的底部固定有与之直径相匹配的开口桩靴；防水布层包括依次搭接并覆盖在钢丝网层上的若干片防水布，且防水布与内衬骨架绑扎固定；上部护筒的底部开设有与内衬骨架顶部相匹配的定位孔，内衬骨架插接在定位孔内。本发明中下部护筒的内衬骨架与钢筋笼组成双层纵向受力结构，以及钢丝网层和防水布层对灌注桩的混凝土保护层提供环向约束，形成强度高、抗屈曲、水平稳定性好的灌注桩。
Pile casing device for cast-in-place pile construction in karst cave and cast-in-place pile construction method
一种溶洞中灌注桩施工所用的护筒装置及灌注桩施工方法
TANG MENGXIONG (author) / HU HESONG (author) / CHEN HANG (author) / LIU CHUNLIN (author)
2023-02-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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