CAJ | 학술논문

针对目前实际工程中没有较好的方法来评价化学植筋的疲劳性能，文中通过对3个植筋悬臂梁‐柱试件以及1个现浇悬臂梁‐柱试件的疲劳加载对比试验，研究在疲劳荷载作用下不同的植筋深度、不同的应力幅对植筋试件疲劳寿命、破坏模式，以及刚度的影响。研究表明，植筋试件的疲劳寿命低于现浇试件的疲劳寿命，同时植筋深度、钢筋应力幅对植筋试件的疲劳寿命有一定影响；疲劳加载后的植筋试件的极限承载力为设计强度的67％～78％，破坏时受拉区植筋未屈服，出现了复合型破坏形式。
침대목전실제공정중몰유교호적방법래평개화학식근적피로성능，문중통과대3개식근현비량‐주시건이급1개현요현비량‐주시건적피로가재대비시험，연구재피로하재작용하불동적식근심도、불동적응력폭대식근시건피로수명、파배모식，이급강도적영향。연구표명，식근시건적피로수명저우현요시건적피로수명，동시식근심도、강근응력폭대식근시건적피로수명유일정영향；피로가재후적식근시건적겁한승재력위설계강도적67％～78％，파배시수랍구식근미굴복，출현료복합형파배형식。
Aiming at actual engineering without good test methods to evaluate the fatigue performance of chemical adhesive steel bar ,this experiment designs a method to conduct the exploratory research on the fatigue performance of the cantilever beam‐column .Through adding to fatigue loading on the three cantilever beam specimens and cast‐in‐place cantilever beam specimens ,the experiment resear‐ches on the influence on fatigue life ,breakage form and stiffness of steel bar specimens from different steel bar depth and different stress amplitude in tension‐shear fatigue loads ,and has a comparative a‐nalysis on the fatigue test results of cast‐in‐place cantilever beam specimens .Research indicated that fatigue life of steel bar specimen is below the fatigue life of cast‐in‐place specimen ,and steel bar stress amplitude and steel bar depth have effects on the fatigue life of the steel bar specimens ;T he ul‐timate bearing capacity of steel bar specimens through fatigue loading is sixty‐seven percent to seven‐ty‐eight percent of the design strength .It is below the design strength ,and the destroyed bar of the tension zone is not to yield ,and the composite failure modes are appeared .