Dynamic Response Characteristics Of The Offshore Platform Blast Wall Under Impact

Offshore platforms often operate in very harsh environments.It is difficult to rescue in time if an accident occurs.As an important safety protection device,the offshore platform blast wall are widely used in offshore platforms.Its structural performance deserves special attention and in-depth research.The research on dynamic response characteristics of offshore platform blast wall structure under impact in accident is an important branch of the structural protection of offshore platforms in recent years,which has great research significance and economic benefit.In this essay,numerical simulation methods are used to study the dynamic response of offshore platform blast wall under impact at normal temperature,dynamic response of offshore platform blast wall under impact at high temperature,and optimization analysis of structure.The main research contents include:For the dynamic response of the blast wall under the impact of oil and gas,the traditional dynamic algorithm is not as efficient as quasi-static algorithm in calculation when the structure’s natural vibration period is far less than the load duration.The experimental data are compared to prove the applicability of the algorithm.The dynamic response of the blast wall structure under different peak and duration loads at normal temperature is simulated.The research shows that the anti-explosion strength of the blast wall has directionality,and the load duration will affect the dynamic response of the structure.Under severe explosion,the structure of the blast wall will undergo local yield deformation.Considering the high temperature environment caused by fire before explosion and the influence of high temperature on material and structure,the dynamic response of the blast wall structure under explosion at high temperature is studied.By comparing the structural response at normal temperature,the results show that the high temperature environment will aggravate the deformation of the blast wall structure,reduce the anti-explosion performance of blast wall structure,and change the local response form of the structure.In view of the influence of the structural parameters of the blast wall on the structural performance,the structural optimization analysis of the section geometry of the corrugated plate of the blast wall was studied based on the genetic algorithm.At the same time,the enhancement of the energy absorption performance of structure is analyzed.The influence of the connection structure parameters on the performance of the blast wall is studied,and a new connection structure is proposed.The results show that the new connection structure makes the blast wall structure have a better energy absorption performance.The related research contents and results of the blast wall structure of offshore platforms can provide a reference for the design and evaluation of structure of offshore platform blast wall.