Dynamic Response Of Reinforced Coral Concrete Beams Under Short-range Lateral Blast Load

In recent years,the frequent occurrence of all kinds of explosion accidents,but any explosion will bring more or less loss to human beings,which makes people pay more and more attention to the related research of explosion.For a long time,the research on explosion can be divided into three aspects: firstly,the research on the dynamic response of structural members under the action of explosion load;Secondly,the damage degree and damage assessment of the structure under the action of explosion load;Thirdly,the local or whole collapse of the whole building under the action of explosion load.In addition,with the deployment of China's Marine strategy,the development and application of Marine resources has become the mission of the new era.The abundant coral aggregate in the ocean is also widely used in the construction of island areas in China.The research direction of this paper is mainly about the dynamic response of reinforced coral concrete beams under the action of short-range lateral explosion load.The research contents mainly include the following aspects:(1)using the equivalent single degree of freedom under explosion impact load is analyzed through the method of the dynamic response of reinforced concrete beam is analyzed,by using the way of equivalent single degree of freedom,in close under explosion load is derived for the dynamic response of reinforced concrete beam maximum displacement formula,and compared with the experiment and numerical simulation results,the demonstration of the maximum beam displacement formula of reliability.(2)based on the current research status,the explosion with an explosive distance of less than 1m is defined as a short-range explosion.When the actual explosion occurs,the actual explosion-facing surface of the beam,which is one of the main load-bearing structures of the building,is mainly the side of the beam.Therefore,the conwep algorithm was used to load the short-range lateral explosion load,to explore the influence of factors such as proportional distance,strength of coral concrete,strength of reinforcement,ratio of longitudinal reinforcement and moment of inertia on the dynamic response of reinforced coral concrete beams.(3)the dynamic response of reinforced coral concrete beams under close range lateral explosion load is studied under plate constraint.The conwep algorithm was used to load the short-range lateral explosion load to explore the influence of the factors such as proportional distance,strength of coral-concrete,strength of reinforcement,ratio of longitudinal reinforcement on the dynamic response of coral-concrete beams under the constraint of plates.