SURVEYS AND STATISTICAL ANALYSES OF CONSTRUCTION LOADS DURING CONCRETE PLACEMENT BASED ON INFLUENCE SURFACE

According to the distribution characteristics of construction loads during placing pumped concrete, survey methods of construction loads such as construction live load and concrete load are proposed based on the influence surface of supporter axial force. Surveys of a number of concrete building projects were conducted in different cities. The collected data included the number of workers and small equipments, weight of workers, heaping height of concrete, height of vibrated concrete and concrete density. Statistical methods of construction live loads and concrete loads are proposed based on the collected data, while statistical characteristics of those two kinds of construction loads are also given. The research results are expected to contribute to the new design code.