發(fā)布時間：2018-03-15 23:11

  本文選題：沉降預(yù)測　切入點：沉降觀測　出處：《河北工業(yè)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著我國經(jīng)濟和科學(xué)技術(shù)的快速發(fā)展，連結(jié)城市之間的高速公路也在大力度的建設(shè)運行，在我國沿海地區(qū)軟土地基上修筑高品質(zhì)公路更會有效促進國民生產(chǎn)和經(jīng)濟發(fā)展，但是在建設(shè)過程中由于軟土地基的土體特性影響使得我國要面臨的困難越來越多。軟土地基含水量大、壓縮性高、抗剪性低，并且施工結(jié)束后地基的沉降更是潛在的影響道路正常使用和安全運輸?shù)妮^大危害，，因此在道路地基修建之前我們要進行大量的實際觀測，取得第一手資料進行分析預(yù)測通過現(xiàn)有階段的計算方法得出精確的處理方案，因此在近些年研究軟土地基沉降分析是一個較深遠的課題。因此，針對軟土地基沉降的計算和預(yù)測的研究是具有使得我國經(jīng)濟加速發(fā)展和道路交通建設(shè)的更順利的重要意義。 本文首先綜合闡述了軟土地基沉降計算的國內(nèi)外現(xiàn)狀，詳細的推導(dǎo)了地基沉降和考慮側(cè)向變形對沉降影響的計算公式，依據(jù)觀測數(shù)據(jù)加以比較分析預(yù)測方法的可靠性。根據(jù)在對軟土地基進行處理之前的信息少和不確定因素較多的狀況，建立了灰色系統(tǒng)理論模型來預(yù)測地基沉降的情況。通過在唐津高速公路沉降觀測段得來的數(shù)據(jù)與預(yù)測結(jié)果進行比較證明模型的準確可靠性，但必須提出的問題是各地地質(zhì)條件差異較大，在不同情況的地域的影響因素不同，需要大量的工程實踐和修正才能更加完善理論模型，最終將預(yù)測方法實施到工程中。
[Abstract]:With the rapid development of economy, science and technology in our country, the highway between the connecting cities is also being built and running vigorously. The construction of high quality highways on the soft soil foundation in the coastal areas of our country will effectively promote the national production and economic development. However, in the process of construction, due to the influence of the soil characteristics of soft soil foundation, there are more and more difficulties to be faced in our country. The soft foundation has high water content, high compressibility and low shear resistance. And the settlement of the foundation after the construction is even more potentially harmful to the normal use of the road and the safe transportation. Therefore, before the construction of the road foundation, we have to carry out a large number of practical observations. Obtaining firsthand data for analysis and prediction, the accurate treatment scheme can be obtained by the calculation method in the present stage. Therefore, in recent years, it is a far-reaching subject to study the settlement analysis of soft soil foundation. The research on calculation and prediction of soft foundation settlement is of great significance to accelerate economic development and road traffic construction in China. In this paper, the present situation of settlement calculation of soft soil foundation at home and abroad is introduced, and the calculation formulas of settlement and lateral deformation are deduced in detail. The reliability of the prediction method is compared and analyzed on the basis of observational data. Based on the fact that there is less information and more uncertainties before the treatment of the soft soil foundation, The grey system theory model is established to predict the settlement of the foundation. The accuracy and reliability of the model are proved by comparing the data obtained from the observation section of the settlement of Tangjin Expressway with the predicted results. But the problem that must be raised is that the geological conditions are quite different and the influencing factors are different in different regions. It needs a lot of engineering practice and correction to perfect the theoretical model and finally the prediction method is applied to the project.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U416.1

【參考文獻】

相關(guān)期刊論文 前5條

1 王猛,岳建偉,劉占通;軟土地基沉降量計算方法探討[J];河南大學(xué)學(xué)報(自然科學(xué)版);2004年03期

2 周煥云,黃曉明;高速公路軟土地基沉降預(yù)測方法綜述[J];交通運輸工程學(xué)報;2002年04期

3 曾超,唐仲華,肖峰;灰色模型(GM)在軟土路基沉降量預(yù)測中的應(yīng)用研究[J];勘察科學(xué)技術(shù);2002年01期

4 周正茂,蔣洪勝,楊榮;考慮應(yīng)力路徑的地基沉降計算法[J];山東建筑工程學(xué)院學(xué)報;1997年03期

5 祝鴻,陳u&,張斌,顧歡達,王月香;高速公路軟土地基沉降的灰色預(yù)測[J];蘇州科技學(xué)院學(xué)報(工程技術(shù)版);2004年03期

本文編號：1617249