CAJ | 학술논문

针对目前加固工程中对剪切销钉的植入质量无明确的判断依据而造成人力和物力浪费的情况,采用复合砂浆钢筋网薄层三面加固梁,通过对试件加载得到的加固梁端部剪切销钉的破坏形态统计分析,结合剪切销钉最大拉拔力的理论计算,提出了剪切销钉拉拔试验合格值。销钉密度满足一定条件时,若安全系数为3,合格值为销钉直径的3倍为百分数乘以植筋强度标准值。研究结果表明,这一剪切销钉拉拔试验合格值,不仅能很好的满足工程的实际需求,而且还节省了大量的人力和物力。
침대목전가고공정중대전절소정적식입질량무명학적판단의거이조성인력화물력낭비적정황,채용복합사장강근망박층삼면가고량,통과대시건가재득도적가고량단부전절소정적파배형태통계분석,결합전절소정최대랍발력적이론계산,제출료전절소정랍발시험합격치。소정밀도만족일정조건시,약안전계수위3,합격치위소정직경적3배위백분수승이식근강도표준치。연구결과표명,저일전절소정랍발시험합격치,불부능흔호적만족공정적실제수구,이차환절성료대량적인력화물력。
Aiming at the waste of manpower and material in current reinforcement work without a definite assessment of the quality of shear pins, the concrete beams strengthened with ferrocement on the three surfaces were subjected to a pullout test to analyze the destructive modes of shear pins. Based on the test results and the calculation of the maximum pullout force of shear pin in theory, an acceptance value of shear pin according to the pullout test is proposed. When the distribution density of shear pins satisfies certain conditions, and the safety factor is 3, the acceptance value will be e-qual to 3 times of the diameter of shear pin divided by 100 and multiplying the characteristic value of shear pin strength. This acceptance value of shear pin determined by the pullout test not only meets the actual requirement of the project, but also saves a lot of manpower and material.