摘要
A caisson foundation is applied to the north anchorage of Taizhou Yangtze River Highway Bridge of which the initial caisson sinking requires dewatering. Since the caisson foundation is quite close to nearby buildings, a system control model is established with source (sink) distribution and intensity being the object function, minimum requirements of settlement and deformation of surroundings caused by dewatering and dynamic water levels during different working procedures being constraints, and the design parameter of pumping wells being the variable,so as to lower the jeopardizing of surrounding buildings, which provides a new method for active control over settlement during dewatering. Such a method of dewatering based on system control model should be of significance for similar projects involving dewatering.
基金
National Science and Technology Support Program of China ( No. 2009BAG15B02)
Key Pro-grams for Science and Technology Development of Chinese Transportation industry ( No. 2008-353-332-160)
Jiangsu Province College Graduate Research and Innovation Program ( No. CX08B_123Z)
2009 Natural ScienceFoundation of Hohai University ( No. 2009424011)
the Fundamental Research Funds for the Central Universi-ties ( No. 2009B11814)
