Qingdao University of Technology

Other

Zhejiang University

China University of Petroleum

Hohai University

China Railway Construction Group Co., Ltd.

China Railway Construction Engineering Group Second Construction Co., Ltd.

Northwedt A&f University

Innovation Research Institute of Shandng Hi-speed Group Co., Ltd.

Institute of Marine Energy Engineering Technology, China Power Engineering Consulting Group Co., Ltd.

Spg Qingdao Port Group Company Limited

Xianzhang Ling

Junwei Liu

Xiuxia Yu

Lingyun Feng

Ning Jia

Hongfeng Guang

Bo Liu

Chao Zhang

Ming Fang

Yi Hong

Xiu Ping Liu

Zhen Guo

Quanwei Liu

Wei Lv

Dayong Li

Lin Cui

Gongfeng Xin

Teng Wang

Lei Su

Zuodong Liang

Xixi Huang

Xu Lv

Cheng Huang

Liang Tang

Yingying Zhao

Ruxiang Zhao

Shuiyue Chen

Zhengzhong Wang

Zhongnian Yang

Kaiyue Sun

Linsheng Liu

Dongsheng Zheng

Zhipeng Wan

Changguan Wu

Jisheng Zhang

Jianwei Chen

Dongliang Xing

Dongsheng Jeng

Guoxiao Zhao

Rongfu Gao

Zhengyi Xu

The present disclosure discloses a temperature-controllable large-size geotechnique true triaxial multi-field coupling test system and a test method. The system includes a host loading mechanism, a deformable large-size soil box, an independent three-dimensional loading unit, a refrigeration, water and salt supplementation unit, and a soil-water-ice-salt change monitoring unit. The deformable large-size soil box is arranged on the host loading mechanism. In combination with the special structural design, monitoring is carried out by dividing a large-size soil test sample into environmental soil and a core soil region to eliminate the size effect of the test. The solution can simulate a three-dimensional stress state of the soil test sample in a three-dimensional open system. In consideration of the evolution of hydrothermal salt and three-dimensional migration of temperature, water, salt, etc. between the soil and the environment, temperature-water-salt-stress-strain multi-field coupling is realized.

Temperature-controllable large-size geotechnique true triaxial multi-field coupling test system and test method

A grouting device for high-coagulability grouting materialsincludes a grouting pipe, a connector and a self-sealing pipe head, wherein one end of the connector is connected with a grouting pump through the grouting pipe, the other end of the connector is connected with the self-sealing pipe head through the grouting pipe, and the grouting pipe is connected with the connector and the self-sealing pipe head in a fixed and sealed mode. The grouting device is easy to install, features reliable connection between the grouting pipe and the connector and the self-sealing pipe head, and can be reused. Because the inner diameter of the connector is consistent with the inner diameter of the grouting pipe, and a slurry outlet on an end cap of the self-sealing pipe head is a circular slurry outlet, pressure loss in the grouting process is effectively reduced, and the grouting effect is good.

Grouting device for high-coagulability grouting material

A pile-side lateral static load device includes a jack system, a liftable jack cart, a loading jack fixing system, and a loading system. The jack system includes a jack body. The jack system is installed on the liftable jack cart through the loading jack fixing system. The loading system is installed on the loading jack fixing system, and the loading system includes counter-pressure loading systems and counter-tension loading systems. The pile-side lateral static load device has a simple structure, is convenient to install and operate, and can complete lateral loading and in-situ tests under different pile diameters, different tonnages and different precisions, so as to facilitate a simulation test of in-situ lateral loading of a pile.

Pile-side lateral static load device

A p-y curve-based element test device is provided. An upper support plate is located above a lower support plate and is fixedly connected to the lower support plate through truss supports symmetrically arranged on left and right sides, and at least one truss support is arranged on each side. A sample container, a servo consolidation mechanism and multidirectional servo actuators are connected to the truss support on the two sides. The servo consolidation mechanism is located above the sample container, and the multidirectional servo actuators are arranged above the servo consolidation mechanism and below the sample container, respectively. Identical loads are synchronously applied from above and below to realize horizontal movement of a pile element to simulate the load condition of a soil body, and a pressure is applied by a servo consolidation device to simulate the stress condition of the soil body at a certain depth.

P-y curve-based element test device and test method

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Qingdao, China

Xianzhang Ling