Qingdao University of Technology

Qingdao Green Technology Geotechnical Engineering Co., Ltd.

Other

Chongqing University

China State Construction Zhongxin Construction Engineering Co., Ltd. Shandong Branch

Shandong Luqiao Group Co., Ltd., Jinan, China

Zhongji Jiurui Geotechnical Engineering Co., Ltd.

Jiangbin Wu

Yonghong Wang

Xiang Fang

Qijun Zhang

Bo Han

Chuantong Zhang

Wengang Zhang

Guodong Shao

Bin Wang

Jun Chi Yan

Jun Wang

Jian Huang

Yan Li

Xin Wang

Mingyi Zhang

Yishun Jiang

Yuning Ge

Weihui Tian

Zuodong Liang

Lin Cui

Lei Su

Chengyue Jia

Peiyuan Lin

Xun Zhu

Baochang Zhang

Junning Xiang

Shujuan Yang

Qianqing Zhang

Bingxiang Yuan

Wenzhuo Liu

Jifei Cui

Zhaolong Li

A system and method for monitoring an earth pressure and displacement of a miniature steel pipe pile body. Sensor installation holes are drilled at predetermined positions outside the steel pipe pile body and sensor metal protective shell with a thickness slightly lower than that of the XY-TY02A resistance-type miniature earth pressure gauge is welded on the steel pipe pile body. The XY-TY02A resistance-type miniature earth pressure gauges are stuck on the steel pipe pile body. The transmission line of the XY-TY02A resistance-type miniature earth pressure gauges passes through the sensor installation holes and are connected to data acquisition system. The reflective sheet base is welded at the preset position of the miniature steel pipe pile and the reflective sheet is attached to the reflective sheet base to realize displacement monitoring.

System and method for monitoring earth pressure and displacement of miniature steel pipe pile body

Provided are a device for simulating a full-scale pile-sinking process of a static pressure pile by air bag preloading and a test method thereof. The device comprises a frame, a beam, a hydraulic jack, a model box, a model pile, a first sand layer, an undisturbed soil mass, a second sand layer, a rubber pad, a forcing air bag, a counter-force steel plate, a model box top cover, a forcing pipe, a pressure relief pipe, a steel casing and a control system. The first sand layer, the undisturbed soil mass, the second sand layer, the rubber pad, the forcing air bag and the counter-force steel plate are laid in the model box in sequence; and the steel casing passes through the model box top cover, the counter-force steel plate, the forcing air bag and the rubber pad in sequence and then reaches a bottom portion of the second sand layer.

Device for simulating full-scale pile-sinking process of static pressure pile by air bag preloading and test method thereof

A concrete inside interface processing structure for secant pile construction, including secant concrete pile, formed plain concrete pile, rotary jet grouting piles, steel mesh sheet, ribbed steel bar, Y-shaped connecting piece, reinforced concrete pile, and U-shaped connecting piece; drilled holes are arranged at intervals along axis of the formed plain concrete pile; the ribbed steel bar is anchored in each drilled hole; the steel mesh sheet is formed by connecting longitudinal bars and transverse bars, and driven into a soil body between the formed plain concrete piles; the concrete layer is formed by spraying concrete on the steel mesh sheet; the reinforced concrete pile is cast at outside of the formed plain concrete pile, and tangent to the formed plain concrete pile, and interlocked with the rotary jet grouting piles; the rotary jet grouting piles are tangent to the formed plain concrete pile or secant concrete pile.

Concrete inside interface processing structure and method for secant pile construction

Growing community of inventors

Qingdao, China

Jiangbin Wu