Cccc First Harbor Engineering Co., Ltd.

Tianjin Port Engineering Institute Co., Ltd. of Cccc First Harbor Engineering Co., Ltd

Tianjin Port Engineering Quality Testing Center Co., Ltd.

No. 2 Engineering Co. of Cccc First Harbor Engineering Co., Ltd.

Yiyong Li

Zengjun Li

Naishou Zhang

Chuang Du

Wei Pan

Qiang Wang

Jinfang Hou

Aimin Liu

Chao Zhang

Chao Gao

Zhenjie Tao

Jianning Zhang

Binbin Xu

Changyi Yu

Yonghua Cao

Xiaoqiang Kou

Changxi Yue

Jinjin Ning

Bingchuan Guo

Zhijun Chen

Naishu Zhang

Fanli Meng

Yipin Cheng

Yongshuai Zhu

Yuxi Feng

Bo Yu

Qiang Guo

Zhanwei Han

Yuanping Fu

Xuhong Suo

The present application provides a water replacement type storage field construction method, including the following steps: construction of a water-stop enclosure; construction of drainage after enclosing: after enclosing the water-stop enclosure, draining water in an enclosed range of the water-stop enclosure, exposing a pit, so as to form dry construction condition; construction of a stacking yard: under the dry construction condition, constructing the stacking yard on the pit, including constructing a lower low-level terrace and a higher high-level terrace; wherein the low-level terrace is lower than an average water level at an outer side of the water-stop enclosure, the high-level terrace is able to be used for walking a stacking-reclaiming device, and the stacking-reclaiming device is able to convey material to or from warehouses; and construction of the warehouses: constructing warehouses on the low-level terrace.

Water replacement type storage field construction method and storage field

Method for predicting a stability of a steel cylinder including: in response to the steel cylinder tilting toward a seaward side at an arbitrary rotation point, obtaining a safety factor for the steel cylinder tilting toward the seaward side by determining an anti-tilt moment and a tilt moment when the steel cylinder is tilted to the seaward side; under a same rotation point, in response to determining that the steel cylinder is rotated toward a land side, determining the safety factor for the steel cylinder tilting toward the land side; taking a smaller safety factor as the safety factor under the rotation point; re-selecting a new rotation point, determining a safety factor corresponding to the new rotation point, and taking a safety factor with a smallest value among all rotation points as a final safety factor; and generating, based on the final safety factor, an anti-tilt instruction.

Methods for predicting a stability of a steel cylinder against tilt

The present application relates to an installation method for a closure joint of an immersed tunnel, and belongs to the technical field of closure joints; the installation method comprises the steps: establishing a first coordinate system; distributing feature points; installing the Ntube coupling; installing an Ntube coupling and pushing out a push-out segment; wherein, the first coordinate system is established at a tail end of an Ntube coupling, breakthrough points NS and NW are distributed at a head end and a tail end of a Ntube coupling respectively, breakthrough points DS and DW are distributed at a push-out segment, and breakthrough points NS and NW are distributed at a head end and a tail end of a Ntube coupling respectively; and coordinates of the breakthrough points DS, DW, NS, NW, NS, NW in the first coordinate system are calculated respectively; the installation method can improve the installation accuracy of the closure joint and is easy to operate.

Installation method for closure joint of immersed tunnel

The present application provides a semi-submersible immersed tube transportation and installation integrated ship and a construction process; the integrated ship includes: a deck structure; two floating structures, ballast water being able to be injected therein; and upper portions or top surfaces of the two floating structures are connected by the deck structure; and two support mechanisms, disposed on opposite sides of the two floating structures respectively; and each support mechanism is disposed at a lower portion or a bottom of the floating structure. The integrated ship can reduce the draught of the integrated ship carrying an immersed tube and realize the transportation requirements of shallow waterway.

Semi-submersible immersed tube transportation and installation integrated ship and construction process

The present application provides a water stopping device of suspension and sliding type, including: a water stop; a first end thereof is connected with a first joint segment and a second end thereof is connected with a second joint segment to form a water stopping cavity; at least one first rod; a first end thereof is connected with the first joint segment and a second end thereof is movably connected with the second joint segment; and at least one first hanging structure, connected with the water stop and the corresponding first rod, and slidably provided on the corresponding first rod. The water stopping device can be applied in joint construction of an immersed tunnel.

Water stopping device of suspension and sliding type and an application thereof

A self-propelled integrated ship for transporting and installing immersed tubes of an underwater tunnel comprises a first ship body and a second ship body which are parallel with each other, a connection structure is arranged between the first ship body and the second ship body; the first ship body, the second ship body and the connection structure are provided with hauling and hoisting devices, a loading space is formed between the first ship body and the second ship body and below the connection structure; a to-be-installed member is arranged in the loading space and is connected with the ship; and the first ship body and the second ship body are provided with propelling power devices and positioning devices. The loading space is provided in a lower part of the integrated ship, and a member to be transported is placed in the loading space and floated in the water, so that most of the weight of the member is shared by buoyancy. The member is transported to a designated site and installed precisely. Thus, the independent transportation and installation of immersed tubes of the underwater tunnel or similar large members with various sizes can be successfully realized by one self-propelled ship without assistance of other additional ships. Moreover, there is no need to close navigation lanes to other ships, thus not affecting the navigations of the other ships.

Self-propelled integrated ship for transporting and installing immersed tubes of underwater tunnel and construction process

A foundation treatment method for piling a foundation structure by penetrating a hardpan layer, i.e., a Deep Slurry Mixing method, comprising following steps: disturbing, by a mechanical device, a location where the foundation structure is to be piled, so that the mechanical device penetrates the hardpan layer of a natural foundation; then injecting clay slurry into the hardpan layer of the natural foundation by a pumping device, an improved foundation is formed after mixing; and piling the foundation structure. The method can change soil property of the original natural foundation, break the hardpan layer, reduce piling resistance of the steel plate cylinder or similar foundation structure, reduce uneven force during the piling process and improve driveability.

Foundation treatment method for piling foundation structure by penetrating hardpan layer

Growing community of inventors

Tianjin, China

Yiyong Li