本文選題：錨桿　切入點：圍巖粗糙度　出處：《鐵道學(xué)報》2017年06期

【摘要】：為研究高地溫隧道干熱環(huán)境中錨桿支護(hù)結(jié)構(gòu)錨固性能劣化問題,設(shè)計不同溫度及圍巖粗糙度下錨桿灌漿料抗拔強(qiáng)度試驗。采用不同類型鋼管模擬圍巖粗糙度,并將試件在不同溫度下養(yǎng)護(hù)。通過試件拉拔試驗,得到不同養(yǎng)護(hù)溫度及圍巖粗糙度下錨桿的荷載-位移曲線,利用SPSS軟件對試驗數(shù)據(jù)進(jìn)行回歸分析。結(jié)果表明:錨桿養(yǎng)護(hù)溫度對其抗拔強(qiáng)度有一定影響,養(yǎng)護(hù)溫度低于35℃時,錨桿的抗拔強(qiáng)度隨溫度升高而增大,養(yǎng)護(hù)溫度高于50℃時,錨桿的抗拔強(qiáng)度隨溫度升高而減小;對于無螺紋錨桿試件,錨筋與灌漿料界面的黏結(jié)強(qiáng)度大于鋼管與灌漿界面;圍巖粗糙度對錨桿的抗拔強(qiáng)度有較大影響,圍巖粗糙度越大,錨桿的抗拔強(qiáng)度越大,錨固效果越好。
[Abstract]:In order to study the deterioration of anchoring performance in dry and hot environment of highland temperature tunnel, the tensile strength test of anchor grouting material under different temperature and surrounding rock roughness was designed. Different types of steel pipe were used to simulate the roughness of surrounding rock. The load-displacement curves of the anchors under different curing temperatures and surrounding rock roughness are obtained by drawing the specimens at different temperatures. The regression analysis of test data by SPSS software shows that the tensile strength of anchor rod increases when the curing temperature is lower than 35 鈩，

本文編號：1691622