Other

Cccc Highway Consultants Co. Ltd.

Poly Changda Engineering Co., Ltd.

Chengmin Wang

Jie Chen

Yi Zhou

Lichuan Cui

Rongfeng Chen

Miao He

Zungui Lei

Yiming Xu

Yadang Zhao

Gangliang Liu

Sipan Yang

Baihong Deng

Run Wang

Zhongwen Wang

Taihao Chen

Hailiang Zhou

A construction method for a cantilever beam on a central pier. A scaled model of the cantilever beam on the central pier is established and tested to obtain the stress distribution regularities of the cantilever beam according to test data and analysis results of the scaled model, so as to find out week parts of the cantilever beam, and thus the optimization design can be performed to make the cantilever beam reasonably carry the load and improve the materials with a higher utilization ratio. The wheeled stand support used in the present application has a high turnover rate and it is easy and convenient to dismantle and assemble the wheeled stand support. A height of the cantilever beam mold can be adjusted by a hydraulic cylinder.

Construction method for a cantilever beam on a central pier

In an ultraviolet LED chip, an epitaxial structure can be isolated into two insulated structures, i.e. a first and a second epitaxial structures by growing the epitaxial structure on a surface of a substrate, and arranging an insulating layer and a groove contacting layer in the middle of the epitaxial structure. The N-type AlGaN layer is stretched out through the groove contacting layer. In the ultraviolet LED chip, through the cooperation among the N electrode, P electrode and intermediate electrode on the base plate along with the first and second epitaxial structures, an LED and an ESD are formed respectively. The ESD is connect to the ends of LED in anti-parallel for providing an electrostatic discharging channel, so as to reduce the direct damage of the ultraviolet LED chip caused by electrostatic discharging, and increase a forward voltage of the LED and the antistatic intensity.

Ultraviolet LED chip and manufacturing method thereof

Growing community of inventors

Guangzhou, China

Chengmin Wang