一种湿陷性黄土地基无振动挤密扩孔装置及方法
By designing a vibration-free compaction and hole-expanding device for collapsible loess foundations, and utilizing an outer sleeve mechanism and a screw loading unit, vibration-free compaction and hole-expanding is achieved, solving the problems of vibration load and construction space in the treatment of collapsible loess foundations, and improving construction efficiency and safety.
CN117513299BActive Publication Date: 2026-07-17CHINA RAILWAY NEW SILK ROAD CONSTR INVESTMENT MANAGEMENT CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY NEW SILK ROAD CONSTR INVESTMENT MANAGEMENT CO LTD
- Filing Date
- 2023-11-27
- Publication Date
- 2026-07-17
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Figure CN117513299B_ABST
Abstract
本发明公开了一种湿陷性黄土地基无振动挤密扩孔装置及方法，该装置包括外套筒机构、丝杆加载单元和扩孔机构，外套筒机构包括上套筒、连接套筒和固定端套筒，丝杆加载单元包括扭转丝杆、连接杆、转接头和固定底座，转接头能绕固定底座旋转，扩孔机构包括两个扩孔部件，扩孔部件包括上连杆、下连杆、扩孔挤压板；该方法包括以下步骤：一、预钻孔及扩孔装置安装；二、初步调节；三、湿陷性黄土地基无振动挤密扩孔；四、湿陷性黄土地基下一个高度处无振动挤密扩孔；五、多次重复步骤四，直至完成预钻孔整个内侧壁的扩孔，形成桩孔。本发明施加侧向力实现无振动挤密扩孔，所需的施工空间较小，且能有效防止振动荷载对临近既有结构的影响。
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