CAJ | 학술논문

　　对混凝土桩锤击施工中出现的桩身层裂破坏现象进行分析。应用大型有限元计算软件LS-DYNA对混凝土桩在软土地基中锤击施工时的破坏现象进行模拟，结合一定的理论模型讨论，分析打桩过程中产生层裂破坏现象的各种影响因素。分析结果表明：应力波的入射压缩和反射拉伸直接影响桩身裂缝的开展情况。研究结果对混凝土桩的设计、制造与锤击施工有一定的指导作用。
　　대혼응토장추격시공중출현적장신층렬파배현상진행분석。응용대형유한원계산연건LS-DYNA대혼응토장재연토지기중추격시공시적파배현상진행모의，결합일정적이론모형토론，분석타장과정중산생층렬파배현상적각충영향인소。분석결과표명：응력파적입사압축화반사랍신직접영향장신렬봉적개전정황。연구결과대혼응토장적설계、제조여추격시공유일정적지도작용。
In this paper,it analyzes the phenomenon of spalling failure in the process of concrete pile impacted by a hammer. Based on the LS-DYNA nonlinear program,the dynamical performance of concrete pile into the soft soil foundation impacted by a hammer is simulated. Taking into account the theoretical model,some analysis are conducted to discuss the influence factors of the spalling failure. The analysis results show that the compression and tension of stress wave directly influences pile spalling mode. The research results can provide guidance to the design,manufacturing,and construction of piles.