화강풍화대에서 실시한 평판재하시험 결과를 이용한 얕은기초의 침하량 산정에 관한 연구

As the full load test for the shallow foundation is impossible unlike pile foundation, and settlement is theoretically increasing according to the size of the foundation, it is very difficult to predict the real bearing and settlement behavior of shallow foundation from the plate (b=30㎝) load test. Moreover, there is no field estimation method about igneous weathered soil and rock. Therefore, to predict the settlement equation, the field plate load test was performed according to the plate diameter (D15, 25, 30, 40, 75, 140㎝) at the igneous weathered soil and rock. To analyze the load ~ relative settlement curve by normalization, the load ( tf/㎡) ~ relative settlement (s/B, s : settlement, B : breath of plate) was used. As a result of normalization by load ~ relative settlement conception, the curve was regular regardless of plate diameter. Therefore, to predict the settlement of real construction from load ~ relative settlement equation from the results of the plate load test, a young modulus is separated (less than 100, 100 ~ 500, over 500 kgf/㎠ ), and, then, the load ~ relative settlement equation is predicted. As it is possible to calculate the structure load and settlement of the foundation width using the above settlement calculation equation without performing the plate load test, it is thought that the equation could be used to determine the permissible settlement.