Guangzhou Institute of Building Science Co., Ltd.

Guangzhou Construction Engineering Co., Ltd

Guangzhou Municipal Engineering Testing Co., Ltd.

Guangzhou Municipal Construction Group Co., Ltd.

Guangzhou Institute of Building Science Group Co., Ltd.

Guangzhou Testing Centre of Construction Quality and Safety Co., Ltd.

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

Hesong Hu

Mengxiong Tang

Zhiguo Zhou

Xiaoli Sun

Hang Chen

Jun Yang

Lingsheng Tan

Jieming Li

Shuo Zhang

Quan Shao

Yu Liu

Junyi Wen

Zhuo Yang

Decun Bian

Hongye Wang

Ducheng Guo

Yayu Zhao

Jixi Shao

Chaowen Wang

Hongbin Zhao

Chunlin Liu

Wuyang Zhou

Jian Su

Shengfang Qiao

Xisheng Chen

Xueshun Yang

Zhongtian Lu

Yuliang Qi

Caiguang Yang

Disclosed is an automatic hoisting and transporting method for a tower crane, the method including: building a three-dimensional grid model for a construction site, and generating a grid node set; generating an obstacle node set and a feasible area node set; obtaining coordinates of an initial node and an end node; planning a hoisting and transporting path from the initial node to the end node, and generating corresponding operating parameters; controlling the tower crane to transport an object according to the operating parameters, and calculating a swing range of the hoisted and transported object and a swing arm at a current position; determining whether a collision may occur; and predicting whether the tower crane may be overturned. The method realizes automatic hoisting and transporting of the tower crane. The object does not collide with an obstacle during hoisting and transporting, thereby ensuring safe operation of the tower crane.

Automatic hoisting and transporting method for tower crane

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.

Apparatus and method for detecting grout compactness in grouted splice sleeve

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.

Drilling apparatus and PHC pipe cased pile, and method of drilling with PHC pipe cased pile

Provided is a pile integrity detection system based on cross-hole sonic logging method. The operator sets the ultrasonic detector into the measuring tubes of the to-be-detected pile, subsequently inputs the project data and activate the ultrasonic detector, by an acoustic wave transmission among a transmitter and a receiver, a wave energy data of the to-be-detected pile can be obtained, and the wave energy data and a project data will be automatically transmitted to the cloud computing module, thereby the integrity level of the to-be-detected pile can be determined without any manual analysis to the wave energy data, preventing from any error or deflection due to manual operation, whereby it greatly improves the accuracy and efficiency of detection and reduces the error rate.

Pile integrity detection system based on cross-hole sonic logging method

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.

Construction method for pouring concrete in karst cave

The present disclosure discloses a data transmission system of safety patrol on construction project site based on 'internet plus' according to the present disclosure comprises a patrol apparatus for collecting and transmitting an on-site panorama image, 3D point cloud data of the scene, location information and construction on-site data; a cloud computing platform for receiving the on-site panorama image, the 3D point cloud data of the scene, the location information and the construction on-site data, and reconstructing a 3D model of a patrol scene based on the panorama images, the 3D point cloud data of the scene, the location information and the construction on-site data; a safety patrol data terminal providing inspection/browse to construction site; the present disclosure enable users to patrol in construction project remotely, reducing workload of the safety production management personnel, improving patrol efficiency, enhancing the intuitive reality of the patrol and the safety patrol level of the construction project; the inspection result is transferred electronically, ensuring the time efficiency of project patrol inspection.

Data transmission system of safety patrol on construction project site based on 'internet plus'

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.

Quick coupling for pipe pile

Growing community of inventors

Guangzhou, China

Hesong Hu