【摘要】：利用壓力試驗機(jī)完成了不同壓實系數(shù)下內(nèi)填砂卵石薄壁方鋼管柱軸壓靜力性能試驗,分析了不同壓實系數(shù)下各試件的破壞形態(tài)、荷載-位移曲線以及極限承載力等數(shù)據(jù)。試驗結(jié)果表明:內(nèi)填不同壓實系數(shù)的砂卵石薄壁方鋼管柱破壞模式均為局部屈曲失穩(wěn)破壞,且屈曲位置基本都靠近端部;內(nèi)填砂卵石的壓實系數(shù)在86%~92%時,試件承載力增長速率要明顯大于壓實系數(shù)在81%~86%的試件承載力增長速率,即薄壁鋼管與砂卵石的相互作用效果較明顯。
[Abstract]:The axial compression static performance tests of thin-wall square steel pipe columns filled with sand and pebbles under different compaction coefficients were completed by using pressure tester. The failure patterns, load-displacement curves and ultimate bearing capacity of each specimen under different compaction coefficients were analyzed. The experimental results show that the failure modes of sand and pebble thin-wall square steel pipe columns filled with different compaction coefficients are local buckling failure, and the buckling positions are basically close to the end. When the compaction coefficient of sand and pebble is 86% 鈮，

本文編號：2492578