Research On The Construction Method Of The Marine Cofferdams With Geotextile Bags Filled With Solidified Soil

This paper studies the application of geotextile bags filled with solidified soil as the core of cofferdams for marine works. The low-priced and sufficient silty clay soil along the coast of Tianjin port can be found nearby, thus the construction costs of the project have been lowered.Based on the analysis of the operational characteristics of cofferdams for marine works, this paper mainly focuses on the research on the mechanism and construction methods of the cofferdams for marine works with che-mical fibre bags filled with solidified soil as the core, applying the finite element method and centrifugal model test (CMT). According to the analysis of results achieved from the monitor on the site, the main contents and contributions of the paper are listed here:1. With the help of the analysis of the construction feature of projects on solidified soil, the rules of correlated influence of various factors on the different variables of physics and mechanics and variables which may affect the intensity of solidified soil have been found out. The method for monitoring the quality of solidified soil and parameters related to it have also been pointed out, which can provide forceful reference for the design of any related projects in terms of choice of parameters.2. Based on the centrifugal model test (CMT) and indoor water engineering model test, the anti-slip mechanism of che-mical fibre bags and deconstruction ways of cofferdams for marine works with che-mical fibre bags filled with solidified soil as the core were being analyzed, with the application of the finite element method. The operational formula and operational methods for the solidity of found of cofferdams for marine works are put forward, and operational theories and designing way of sections of those cofferdams are also firmly established.3. The paper made research on the method for the construction of cofferdams for marine works and analyzed the construction feature and difficult points in the process of constructing cofferdams for marine works with che-mical fibre bags filled with solidified soil as the core. In...