| With the sustained and rapid development of the national economy, China's transportation industry also usher in a glorious era. Growth of traffic volume, highway traffic mileage is ranked first in the world, road and bridge is the world amazing rapid development speed, role and status of highway bridges in the national economy is becoming significantly valued by the people. Current in China bridge construction technology has reached world advanced level, but bridge conservation management and part old bridge how adaptation current vehicles load contains requirements, aspects of problem day explicit highlight, coupled with in China highway construction in financing channel, and construction mode, and charges and the loan way, and conservation management institutions set, aspects rendering out more complex of diversity, led "reconstruction light raising" phenomenon still widely exists, highway bridge conservation maintenance reinforcement technology development relative lag.Maintenance and reinforcement of old bridge, no existing norms, nor for the use of standard, bridge disease complicated disease is difficult to determine. Therefore, further strengthening the reinforcement technology of bridge maintenance and repair, and to increase investment in old bridge strengthening capital, eliminate security risks in a timely manner, to protect people's life and property safety and conservation of nation-building funds, is of extremely important significance.This article present situation analysis of trunk highway bridge in Zhengzhou, 316 lines and to the author's participation in the provincial road of Zhengzhou borders Hou Zhai Visual inspection of the bridge, concrete strength testing, concrete cover thickness test and static loading test and dynamic load test results on the basis of proposed bridge reinforcement and reconstruction programmes, Zhengzhou trunk highway bridge repair and strengthening for the future to provide some reference. |
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