本文關(guān)鍵詞： 圍海造地 真空預(yù)壓法 軟土地基 滲透灌漿 地基承載能力　出處：《浙江工業(yè)大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：圍海造地是沿海城市開發(fā)利用海洋、拓展海岸發(fā)展空間的重要手段之一,它可以充分利用海洋的空間資源屬性,并具有深遠(yuǎn)的發(fā)展前景。如今,真空預(yù)壓法是圍海造地工程軟土地基的主要處理方法。然而真空預(yù)壓法加固后的軟土地基地基承載能力還是無法滿足高層建筑或?qū)τ诘鼗休d能力要求比較高的工程項(xiàng)目。本文主要研究如何在真空預(yù)壓法條件下再次提高軟土地基地基承載能力,從而滿足更多工程項(xiàng)目。通過模型試驗(yàn)方法,利用自主研制的試驗(yàn)裝置開展真空預(yù)壓處理與滲透灌漿之間的相互作用機(jī)理,尋求兩者最佳工藝結(jié)合點(diǎn),同時(shí)給出兩者結(jié)合的理論模型,為下一步工藝試驗(yàn)及技術(shù)創(chuàng)新做好理論實(shí)驗(yàn)與理論準(zhǔn)備。按照試驗(yàn)步驟進(jìn)行室內(nèi)模擬試驗(yàn),需測定、對比以及分析試驗(yàn)前后土體物理性質(zhì)指標(biāo),進(jìn)而知道加固效果。同時(shí),試驗(yàn)過程中需測定土體沉降量以及水土壓力傳感器應(yīng)變值。從理論上,闡述真空灌漿的作用機(jī)理,并提出適用于真空灌漿的沉降計(jì)算公式、漿液分布公式以及灌漿量公式。根據(jù)真空灌漿加固軟土地基的試驗(yàn)研究成果,相比于單純真空預(yù)壓法,我們能知道真空灌漿處理后土體的地基承載能力提高多少�？偨Y(jié)真空灌漿時(shí)土體的沉降規(guī)律、尋求到真空灌漿最佳控制點(diǎn),為現(xiàn)場真空灌漿加固軟土地基應(yīng)用提供依據(jù)。
[Abstract]:Reclaimed land is one of the important means for coastal cities to exploit and utilize the ocean and expand the coastal development space. It can make full use of the spatial resources of the ocean and has a far-reaching development prospect. Vacuum preloading method is the main treatment method of soft soil foundation in reclamation engineering. However, the bearing capacity of soft soil foundation strengthened by vacuum preloading method can not meet the requirements of high-rise buildings or the foundation bearing capacity. This paper mainly studies how to improve the bearing capacity of soft foundation again under the condition of vacuum preloading. In order to meet more engineering projects, through the model test method, the interaction mechanism between vacuum preloading and permeation grouting is carried out by using the self-developed test device, and the optimum technological combination point between the two is sought. At the same time, the theoretical model of the combination of the two is given, which makes theoretical experiment and theoretical preparation for the next step of technological experiment and technological innovation. The laboratory simulation test is carried out according to the test steps, and the physical properties of soil before and after the test need to be measured, compared and analyzed. At the same time, the settlement of soil and the strain value of soil and water pressure sensor should be measured during the test. Theoretically, the mechanism of vacuum grouting is expounded, and the calculation formula of settlement suitable for vacuum grouting is put forward. Slurry distribution formula and grouting quantity formula. According to the experimental results of vacuum grouting strengthening soft soil foundation, compared with the simple vacuum preloading method, We can find out how much the bearing capacity of soil can be improved after vacuum grouting, summarize the settlement law of soil during vacuum grouting, find out the best control point of vacuum grouting, and provide the basis for the application of vacuum grouting in strengthening soft soil foundation.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU447;TU472.33

【共引文獻(xiàn)】

相關(guān)期刊論文 前1條

1 張中瓊;王清;李曉茹;宋晶;房明;崔孝禮;;真空聯(lián)合堆載預(yù)壓加固土體的工程地質(zhì)性質(zhì)[J];世界地質(zhì);2009年01期

相關(guān)博士學(xué)位論文 前2條

1 李永紅;低能強(qiáng)夯與真空降水聯(lián)合法機(jī)理探討及在深圳的應(yīng)用研究[D];中南大學(xué);2010年

2 苑曉青;新型真空預(yù)壓法室內(nèi)模擬試驗(yàn)與沉降的預(yù)測研究[D];吉林大學(xué);2012年

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本文編號(hào)：1525335