公开(公告)号：US11505908B2

公开(公告)日：2022-11-22

申请号：US17158718

申请日：2021-01-26

申请人： Guangzhou Municipal Engineering Testing Co., Ltd. ,  Guangzhou Institute of Building Science Co., Ltd. ,  Guangzhou Construction Engineering Co., Ltd. ,  Guangzhou Municipal Construction Group Co., LTD.

发明人： Mengxiong Tang ,  Zhiguo Zhou ,  Xiaoli Sun ,  Jun Yang ,  Hesong Hu

IPC分类号： E02D7/26 ,  E02D7/30 ,  E02D5/30

摘要： Provided is a drilling apparatus, comprising a PHC pipe cased pile having a drilling section for containing fluid and a hammer element arranged inside the cavity of the PHC pipe cased pile which moves along the drilling direction till the bottom of the drilling section. As the hammer element moves along the drilling direction till the bottom of the drilling section, a localized hydraulic force will be induced in the fluid contained in the drilling section of the PHC pipe cased pile by a sharp rise in the fluid pressure in addition to the impact force directly acted on the rock and soil by the hammer element. Under action of the hydraulic force and the impact force, the surrounding soft rock stratum could be crushed and the rock stratum with higher strength is left intact, that is, the drilling apparatus proceeds until harder rock. At this point, concrete casting will bond with the harder rock, resulting in a better bearing capacity of the PHC pipe cased pile foundation.

公开(公告)号：US11604182B2

公开(公告)日：2023-03-14

申请号：US17122287

申请日：2020-12-15

申请人： Guangzhou Municipal Engineering Testing Co., Ltd. ,  Guangzhou Construction Engineering Co., Ltd. ,  Guangzhou Municipal Construction Group Co., LTD.

发明人： Mengxiong Tang ,  Zhiguo Zhou ,  Xiaoli Sun ,  Hongye Wang ,  Jun Yang ,  Hesong Hu ,  Wuyang Zhou ,  Decun Bian ,  Yayu Zhao ,  Jixi Shao ,  Ducheng Guo ,  Hongbin Zhao

IPC分类号： G01N33/38

摘要： Provided is an apparatus and method for detecting grout compactness in grouted splice sleeve, the apparatus comprises a probe assembly, which comprises at least one of capacitive probe and piezoelectric sensor and is arranged inside the grouted splice sleeve to detect parameters of the sleeve during grouting and curing and a detector, which comprises at least an analysis module that is connected with the probe assembly to obtain the detected parameters and carry out calculation and analysis for the parameters. The probe assembly is arranged inside the grouted splice sleeve and forms a loop with the detector during grouting, such that during the process of grouting, the detected parameters will be changed as the surrounding dielectric changes, therefore, the detector may determine in real time whether the grouted splice sleeve is fully grouted by calculating and analyzing the detected parameters, which achieves a faster and easier grout compactness detection.

公开(公告)号：US11214938B2

公开(公告)日：2022-01-04

申请号：US16880722

申请日：2020-05-21

申请人： GUANGZHOU INSTITUTE OF BUILDING SCIENCE CO., LTD. ,  Guangzhou Construction Engineering Co., Ltd

发明人： Mengxiong Tang ,  Hang Chen ,  Hesong Hu

IPC分类号： E02D5/38 ,  E02D5/36 ,  E21B7/28

摘要： The present application discloses a construction method for pouring concrete in a karst cave. Concrete streaming is pumped into a hollow passage of a drill stem, then opens the one-way openable sealing cover with a pre-tensioned spring on a reaming drill bit and enters the karst cave to complete pouring of the concrete. When the karst cave is relatively low, low-slump plain concrete mixed with quick-setting agents is injected through a drilling rig and the hollow drill stem to form a concrete pier; when the karst cave is relatively high, the hollow drill stem is sleeved into a thin-walled steel shell, and the thin-walled steel shell is synchronously sunk into the drilled hole while drilling, enters the karst cave and is socketed into a stable rock stratum, then concrete is pumped into the thin-walled steel shell from the bottom of the pile, and finally, a reinforcement cage is inserted to form a cast-in-place pile. Compared with the existing karst cave treatment methods, the construction method according to the present application can greatly reduce the consumption of materials, improve the mechanization of construction, simplify the construction process, shorten the construction period and reduce the engineering cost, and the cast-in-place pile with thin-walled steel shell, formed when the karst cave is relatively high, can further improve the bearing capacity of the foundation.

公开(公告)号：US09359738B2

公开(公告)日：2016-06-07

申请号：US14470206

申请日：2014-08-27

申请人： Guangzhou Institute of Building Science Co., Ltd. ,  Technology Development Center of Guangzhou Institute of Building Science Co., Ltd.

发明人： Yuliang Qi ,  Mengxiong Tang ,  Hesong Hu

IPC分类号： E02D5/52

CPC分类号： E02D5/526

摘要： The present invention relates to a quick coupling for pipe pile, comprising an upper end plate, a lower end plate and a screw hook made of spring steel for coupling the upper and lower end plate, a plurality of tapped holes are uniformly provided on the upper end plate, a plurality of holes corresponding to the tapped holes are provided on the lower end plate, a lock hole is positioned at the lower portion of the hole, while the cross-section area of the lock hole is bigger than the cross-section area of the hole. One end of the screw hook is provided with a screw end mating with the tapped hole on the upper end plate, while the other end is provided with a hook end mating with the lock hole on the lower end plate, whereby the upper and lower end plate can be coupled firmly.

摘要翻译： 本发明涉及一种用于管桩的快速接头，包括上端板，下端板和用于连接上端板和下端板的弹簧钢制成的螺纹钩，多个螺纹孔均匀地设置在上部 在所述下端板上设置与所述螺纹孔对应的多个孔，在所述孔的下部设有锁定孔，同时所述锁定孔的截面积大于所述截面 孔的面积。 螺丝钩的一端设置有与上端板上的螺纹孔配合的螺纹端，而另一端设有与下端板上的锁定孔配合的钩端，由此上端和下端 板可以牢固地连接。