本文選題：樁式護岸結(jié)構(gòu) + 有限元法�。� 參考：《浙江大學》2014年碩士論文

【摘要】：杭嘉湖地區(qū)地處“長三角經(jīng)濟區(qū)”,人口密集,經(jīng)濟發(fā)達,但隨著社會經(jīng)濟的快速發(fā)展,水環(huán)境惡化問題卻日益嚴重。為此,在“治污為本”的前提下,通過實施引排通道和河網(wǎng)綜合治理建設(shè),以促進地區(qū)骨干河網(wǎng)循環(huán)流動,達到治污的目的。在河道整治拓寬中,往往碰到局部房屋密集區(qū)域,為保證工程能順利實施,提出了雙排灌注樁的臨時性支護為永久性結(jié)構(gòu)護岸型式,但對雙排樁護岸結(jié)構(gòu)體系的性狀研究至今尚不深入,在大型工程項目中的應用還較為保守。 本文結(jié)合杭嘉湖東部平原的河道整治工程,從保持現(xiàn)狀河道的自然性、生態(tài)性、減少征用土地和拆遷工程量等角度出發(fā),設(shè)計對房屋密集河段采用“Π”形雙排樁結(jié)構(gòu)型式的河道護岸。與基坑雙排門架式結(jié)構(gòu)相比,“Π”形雙排樁結(jié)構(gòu)具有其自身的結(jié)構(gòu)特點：1)后排樁間距更大,不設(shè)樁頂通長冠梁,只設(shè)前后排樁拉梁；2)后排樁起拉錨作用。 結(jié)合具體工程,本文對“Π”形雙排樁護岸結(jié)構(gòu)的內(nèi)力變形性狀開展研究,主要研究內(nèi)容如下： 1)系統(tǒng)總結(jié)雙排樁的研究現(xiàn)狀,對雙排樁理論中的比例系數(shù)法、剛體極限平衡法、等效抗彎剛度法以及彈性地基梁法進行詳細闡述； 2)簡要闡述本文有限元基本理論和ABAQUS、PLAXIS軟件。 3)分別建立“Π”形雙排樁護岸結(jié)構(gòu)的三維和二維有限元分析模型,探討被動土加固區(qū)、樁徑、樁間距、排距等因素的影響,為此類河道護岸結(jié)構(gòu)的優(yōu)化設(shè)計提供參考。
[Abstract]:The Hangzhou and Jiahu area is located in the "Yangtze River Delta Economic Zone" with dense population and developed economy. However, with the rapid development of social economy, the problem of deterioration of water environment is becoming more and more serious. Therefore, under the premise of "pollution control is the basis", through the implementation of comprehensive management construction of diversion and drainage channels and river networks, the circulation flow of the backbone river networks in the region can be promoted and the purpose of pollution control can be achieved. In order to ensure the smooth implementation of the project, in order to ensure the smooth implementation of the project, the temporary support of double-row cast-in-place piles is put forward as a permanent structure bank protection type. However, the research on the characteristics of double-row pile revetment structure system is still not thorough, and its application in large engineering projects is conservative. Based on the river regulation project in the eastern plain of Hangzhou and Jiaxi Lake, this paper starts from the point of view of maintaining the natural and ecological nature of the river course, reducing the requisition of land and the amount of demolition works, etc. The riverway bank protection of building dense reach is designed with the structure of "蟺" type double row pile. Compared with the double row door frame structure of foundation pit, the structure of "鈪，

本文編號：1862877