本文關(guān)鍵詞： 高填方涵洞 現(xiàn)場測試 豎向土壓力 分布角法 拱效應(yīng)　出處：《中外公路》2014年06期 　論文類型：期刊論文

【摘要】：為了研究沿涵洞縱向不同位置的涵頂豎向土壓力的分布規(guī)律,基于分布角法推導(dǎo)了距離涵洞口不同位置的涵頂豎向土壓力的計算方法。選取吉林省圖們至琿春高速公路樁號為RK365+510的高填方涵洞作為試驗涵洞,在涵頂埋設(shè)土壓力盒測量當(dāng)填土高度為12、16和20m時,距離涵洞口不同位置的涵頂豎向土壓力。分析了豎向土壓力沿涵洞縱向的分布規(guī)律,探討了拱效應(yīng),分析了基于分布角法推導(dǎo)的土壓力計算值和實測值的誤差。結(jié)果表明:基于分布角法的涵頂豎向土壓力的計算和試驗結(jié)果較接近。離涵洞口較近時,壓力盒的應(yīng)力集中使實測值大于計算值;隨著縱向長度的增加,涵頂拱效應(yīng)使實測值小于計算值。采用規(guī)范"土柱法"的計算值偏大造成結(jié)構(gòu)設(shè)計過于安全而不經(jīng)濟。建議涵洞可分段設(shè)計并采用不同的尺寸。
[Abstract]:In order to study the distribution along the longitudinal culvert in different position of the vertical earth pressure, distance calculation method of culvert mouth in different position of the vertical earth pressure distribution based on angle method is deduced. From Jilin province to Hunchun Tumen Expressway pile No. RK365+510 high embankment culvert culvert culvert as a test, the buried soil pressure box when measuring the filling height of 12,16 and 20m, from the culvert mouth in different position of the vertical earth pressure. Analysis of the vertical earth pressure distribution along the longitudinal culvert, discusses the arch effect, analyzes the error value and the measured value of earth pressure calculation method is derived based on the angular distribution. The results show that the calculation and test results the distribution angle method based on vertical earth pressure is close. From the culvert mouth close, pressure of stress concentration so that the measured value is greater than the calculated value; with the increase of the longitudinal length of the culvert, arch effect The measured value is less than the calculated value. The calculation value of the standard "soil column method" is too large, which makes the structural design too safe and not economical. It is suggested that culverts can be segmented and designed with different sizes.

【作者單位】： 吉林大學(xué)建設(shè)工程學(xué)院;河南工程學(xué)院資源環(huán)境學(xué)院;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃“973”項目(編號:2010CB731503) 吉林省交通廳科技項目(編號:2011417)
【分類號】：U449
【正文快照】： 1前言建設(shè)山嶺重丘區(qū)高速公路時,考慮到保護植被和水土生態(tài)環(huán)境,有效利用路塹開挖的土石方,設(shè)計者常常選擇修建高路堤來代替橋梁。埋置于高路堤的涵洞上方填土較高,有些路段已達到50 m,關(guān)于高填方涵洞的試驗研究資料比較罕見,j賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘賘，

本文編號：1478305