Cccc Highway Consultants Co. Ltd.

China Communications Construction Company Limited

Shanghai Zhenhua Heavy Industries Company Limited

Cccc Wuhan Harbour Engineering Design & Research Co., Ltd.

China Communication 2nd Navigational Bureau 2nd Engineering Co., Ltd.

The Second Harbor Engineering Company

Jibing Gao

Wei Lin

Yu Liu

Xiaodong Liu

Ming Lin

Haiqing Yin

Kexin Liu

Li Wang

Qiang Wang

Wei Feng

Xiaodong Wang

Chao Liu

Bin Wu

Zhigang Zhang

Hai Ji

Ke Deng

Qian Cheng

Yaping Liu

Yuwen Li

Weibin Chen

Yiyuan Wu

Huawen Wang

Heng Liang

Changcheng Wei

Qingxi Zeng

Kaikai Li

Yonggang Lv

Lingfeng Liu

Liuqing Tu

Huaiping Su

Heng Lian

The present application discloses a bearing structural member, a support, a joint assembly and a tube section assembly, wherein the maximum counter force provided by the bearing structural member under an external load is an own designed threshold value, namely when the external load is greater than the designed threshold value of the bearing structural member, the bearing structural member deforms, and provides a counter force equal to the designed threshold value; the support includes at least one bearing structural member; and the joint assembly and the tube section assembly are both equipped with the support. When the external load is not high and is less than the designed threshold value, the bearing structural member may effectively suppress the deformation just like a rigid structural member; when the external load exceeds the designed threshold value, the bearing structural member may deform, and provide a stable counter supporting force less than the external load. The bearing structural member may be applied to the support, the joint assembly and the tube section assembly, plays a role in protecting the structures or key structural components, and may be widely applied to the fields of design of bridges, design of building structures, design of tunnels and the like.

Bearing structural member, support, joint assembly and tube section assembly

The present application relates to the field of immersed tube jointing, and more particularly relates to a post-grouting method for an immersed tube joint base. The post-grouting method includes the following steps: before locked backfilling of immersed tubes to be implanted, disposing a grouting tube capable of outputting solidifiable slurry in a furrow below immersed tubes; and after the locked backfilling, grouting the immersed tubes by using the grouting tube. For the purposes of adjusting postures and heights of the immersed tubes in case of abnormal settlement during installation, solving the problems on the stabilities and the service lives of immersed tube joints due to settlement of gravel mattresses or a geologic structure thereunder after installation, and enabling the immersed tubes to achieve a better bearing effect on a load during use, the present application provides the post-grouting method for the immersed tube joint base.

Post-grouting method for immersed tube joint base

The present application discloses a final joint of an immersed tunnel, a prefabrication method and an installation method, wherein the final joint includes two end surfaces connected with installed adjacent tube sections; the two end surfaces are both tilted surfaces, so that the longitudinal profile of the final joint along an installation direction is of an inverted trapezoid structure; and the final joint further may be of a structure with a tube section I and a tube section II which are connected with each other. The final joint of the immersed tunnel is simple in structure, convenient to control and relatively high in precision, thereby reducing lots of open sea diving work and lowering a risk of installation quality defects; as prefabrication procedures are simple, the final joint may be prefabricated in a land factory and then transported to the site, thereby reducing influence of weather conditions on construction; a body structure of the final joint is prefabricated in the factory, and then the overall final joint is transported to the site for installation; water stop systems realize quick water stop, thus forming a dry construction environment; and therefore, the influence of weather and tidal current conditions on a project may be reduced, and a quality risk may be lowered.

Final joint of immersed tunnel as well as prefabrication method and installation method

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Beijing, China

Jibing Gao