【摘要】：巖土邊坡工程問題是一個(gè)復(fù)雜的問題，它涉及眾多學(xué)科，比如地質(zhì)、結(jié)構(gòu)、環(huán)境、材料和儀器，隨著實(shí)驗(yàn)技術(shù)和數(shù)值模擬技術(shù)的日益完善，路塹邊坡穩(wěn)定性理論得到了更深層次的發(fā)展。保持路塹邊坡的穩(wěn)定性的作用是不言而喻的，它的影響是巨大的，對(duì)人民群眾的人身財(cái)產(chǎn)安全和交通是否便捷順利都有很大影響。同時(shí)它對(duì)保持邊坡整體性，防止水土流失，對(duì)邊坡周邊構(gòu)筑物和當(dāng)?shù)氐纳鷳B(tài)環(huán)境的穩(wěn)定和平衡也有比較大的影響。邊坡的加固與防護(hù)也逐漸顯得重要，科學(xué)合理的工程支護(hù)措施為邊坡的穩(wěn)定性提供了強(qiáng)有力的保證。 本文以鄭州至新鄭快速通道改建工程為例，著重論述了邊坡支護(hù)施工技術(shù)。本工程路塹挖深為1.65~13.9m；沿線土體主要為雜填土和粉砂土等，自立性較差，地基承載力低；路塹邊坡開挖邊界距離京廣鐵路高架橋很近。因此如何結(jié)合本路段的地層情況，制定相應(yīng)的路塹支護(hù)方案以確保高架橋和京廣線鐵路的正常使用和沿線路段施工安全，又能經(jīng)濟(jì)合理、工期最優(yōu)地完成工程施工，具有迫切的現(xiàn)實(shí)需求，為此我們需針對(duì)該工程進(jìn)行專項(xiàng)研究。 通過現(xiàn)場實(shí)地調(diào)研，系統(tǒng)總結(jié)了國內(nèi)外邊坡穩(wěn)定性分析方法和路塹邊坡支護(hù)方案及其應(yīng)用范圍，選取應(yīng)用范圍較廣、工程效果和經(jīng)濟(jì)效果評(píng)價(jià)較好的微型樁復(fù)合土釘墻和預(yù)應(yīng)力錨索灌注樁為研究對(duì)象，闡述了它們的支護(hù)機(jī)理，根據(jù)本次研究的工程實(shí)例，系統(tǒng)總結(jié)了詳盡的施工工藝和質(zhì)量控制措施，并對(duì)箱涵頂進(jìn)施工技術(shù)做簡要介紹。本文的主要研究內(nèi)容如下： （1）首先對(duì)路塹邊坡的分類、影響因素及失穩(wěn)破壞模式做了介紹。 （2）對(duì)鄭州至新鄭快速通道改建工程的工程概況，工程地質(zhì)條件，周邊環(huán)境條件進(jìn)行說明，并制定出相應(yīng)的邊坡支護(hù)方案。 （3）總結(jié)了鋼管微型樁復(fù)合土釘墻和樁錨支護(hù)的支護(hù)機(jī)理和失穩(wěn)破壞模式，簡單介紹了計(jì)算方法，，并對(duì)其穩(wěn)定性進(jìn)行驗(yàn)算。 （4）結(jié)合本工程所需施工技術(shù)，系統(tǒng)闡述了鋼管微型樁復(fù)合土釘墻、預(yù)應(yīng)力錨索灌注樁、箱涵頂進(jìn)的施工工藝和技術(shù)要求。
[Abstract]:Geotechnical slope engineering is a complex problem, which involves many disciplines, such as geology, structure, environment, materials and instruments. With the increasing improvement of experimental technology and numerical simulation technology, The stability theory of cutting slope has been further developed. The function of maintaining the stability of cutting slope is self-evident, its influence is huge, and it has a great influence on the safety of people's personal property and whether the traffic is convenient and smooth. At the same time, it also has a great impact on maintaining the integrity of the slope, preventing soil and water loss, and on the stability and balance of the structures around the slope and the local ecological environment. The reinforcement and protection of slope is becoming more and more important, and scientific and reasonable engineering support measures provide a strong guarantee for the stability of slope. Taking Zhengzhou to Xinzheng Expressway Reconstruction Project as an example, this paper focuses on the construction technology of slope support. The cutting excavation depth of this project is 1.65 脳 13.9m, and the soil along the project is mainly mixed fill and silt, which is poor in self-supporting and low in bearing capacity of foundation. The excavation boundary of cutting slope is very close to the viaduct of Beijing-Guangzhou Railway. Therefore, how to formulate the corresponding cutting support scheme to ensure the normal use of viaduct and Beijing-Guangzhou line railway and the construction safety along the road section, and how to complete the project construction economically and reasonably, and how to complete the project construction optimally during the construction period? There is an urgent practical demand, so we need to carry out special research on the project. Through field investigation, the methods of slope stability analysis at home and abroad, cutting slope support scheme and its application scope are systematically summarized, and the application range is wide. The composite soil nailing wall and prestressed anchor cable cast-in-place pile with fine evaluation of engineering effect and economic effect are the research objects, and their supporting mechanism is expounded. according to the engineering example of this study, The detailed construction technology and quality control measures are systematically summarized, and the jacking construction technology of box culvert is briefly introduced. The main contents of this paper are as follows: (1) the classification, influencing factors and instability failure mode of cutting slope are introduced at first. (2) the engineering situation, engineering geological conditions and surrounding environmental conditions of Zhengzhou to Xinzheng Expressway Reconstruction Project are explained, and the corresponding slope support scheme is worked out. (3) the supporting mechanism and unstable failure mode of steel pipe micro-pile composite soil nailing wall and pile-anchor support are summarized, the calculation method is briefly introduced, and the stability of the composite soil nailing wall and pile-anchor support is checked and calculated. (4) combined with the construction technology needed in this project, the construction technology and technical requirements of steel pipe micro-pile composite soil nailing wall, prestressed anchor cable cast-in-place pile and box culvert jacking are systematically expounded.
【學(xué)位授予單位】：河南工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U416.1

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