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（長(zhǎng)安大學(xué)建筑工程學(xué)院，西安 710061）

［摘要］生土結(jié)構(gòu)營(yíng)建時(shí)所取用的土料中常含有礫石，為了研究礫石含量對(duì)生土塊材受力性能的影響，對(duì)摻入不同粒徑、不同摻量礫石的10組共100個(gè)生土立方體試塊進(jìn)行抗壓強(qiáng)度試驗(yàn)。通過試驗(yàn)結(jié)果對(duì)比，探討了生土試塊的破壞形態(tài)、破壞過程、荷載位移曲線、抗壓強(qiáng)度及變形能力。試驗(yàn)結(jié)果表明，礫石的粒徑和摻量對(duì)生土立方體塊材的抗壓力學(xué)性能有一定影響，礫石摻量在5%以下較為合理，隨摻量增加，生土塊材抗壓強(qiáng)度有所降低；隨粒徑增大，生土塊材抗壓強(qiáng)度有所增大，但礫石粒徑不宜大于墻體厚度的1/3。

［關(guān)鍵詞］生土結(jié)構(gòu)； 抗壓強(qiáng)度； 變形性能； 礫石摻量； 礫石粒徑； 試驗(yàn)研究

中圖分類號(hào)：TU361文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)15-0076-04

Analysis for effects of gravel contents on compression behavior of raw-soil specimens

Wang Yihong, Wu Qinrong, Wang Tianya, Liu Fang, Zhang Kun

(School of Civil Engineering, Chang′an University, Xi′an 710061, China)

Abstract:The soil often contains gravel when  raw-soil structure was built. In order to investigate the effect of gravel contents on mechanical properties of raw-soil specimens, the compressive strength tests on 10 groups of 100 raw-soil cube specimens with different particle sizes and gravel contents were carried out. Through the comparison of test results, the failure mode, failure process, load-displacement curve, compressive strength and strain capacity of raw-soil specimens were discussed. The test results show that particle size and gravel content have some effects on compressive mechanical properties of raw-soil cube specimens. Compressive strength of specimens is reduced with increase of gravel content and less than 5 percent is the reasonable proportion for gravel content. Compressive strength of specimens is increased with increase of particle size of gravel, but the particle size of gravel should not be greater than  1/3 of wall thickness.

Keywords:raw-soil structure; compressive strength; deformation capacity; gravel content; particle size of gravel; test research

*國(guó)家自然科學(xué)基金（51478043）。

作者簡(jiǎn)介：王毅紅，博士，博士生導(dǎo)師，Email: wangyh@chd.edu.cn。