| With the quicker speed of urbanization and the expansion of urban construction, a lot of land in hills and mountain areas will be used for construction. In hills and mountain areas, the soft rock foundation is common.On the soft foundation, it is popular to adopt non-reinforced spread independent foundation under column and non-reinforced spread independent foundation plus a water proof board on the strong and medium weathered soft rocks.Based on field simulated test, theoretical analysis and numerical calculation, this paper probes into the test methods and distribution models of basement reaction of non-reinforced spread foundation and the failure models of non-reinforced spread foundation on soft rocks. The main work is as follows:1. Find out the best test element for the non-reinforced spread foundation test on soft rocks after the comparative analysis of the validity of the element tested by field simulated tests.2. Make a preliminary design based on current national technical standards. Compare the design calculation results with the results of the field tests to verify the reasonableness and applicability of the current design methods3. Obtain the basement reaction’s distribution law of non-reinforced spread foundation on soft rocks by comparing the field test results and the the numerical analysis.4. Get the failure models of non-reinforced spread foundation under different states based on the damage shape, the order and the development law of the appearing cracks.5. Collect and analyze the bearing capacity data of non-reinforced spread foundation and put forward the capacity formula of non-reinforced spread foundation on soft rocks. |
