【正文】 摘 要 該設(shè)計(jì)運(yùn)用所學(xué)的知識(shí)完成木沖隧道 左 線的設(shè)計(jì)與施工。木沖隧道 左 線長(zhǎng) 1825m所經(jīng)地區(qū)為典型的喀斯特地貌，地層為以砂巖、頁(yè)巖、粉砂巖為主的寒武系地層。 首先 依據(jù)工程要求和設(shè)計(jì)規(guī)范確定隧道斷面，然后根據(jù)“荷載 結(jié)構(gòu)”法通過(guò)ANSYS 對(duì)結(jié)構(gòu)進(jìn)行強(qiáng)度檢算，根據(jù)檢算結(jié)果配筋。隧道圍巖等級(jí)主要以Ⅱ級(jí)、Ⅲ級(jí)、Ⅳ級(jí)和Ⅴ級(jí)為主。Ⅱ級(jí)和Ⅲ級(jí)圍巖比較穩(wěn)定設(shè)計(jì)采用全斷面開(kāi)挖，Ⅴ級(jí)和 Ⅳ 級(jí)圍巖，由于圍巖情況差，開(kāi)挖斷面較大設(shè)計(jì)采用中側(cè)壁導(dǎo)坑法。隧道的 主要 施工方法：隧道采用新奧法施工，以噴射混凝土錨桿作為主要的支護(hù)手段，通過(guò)檢測(cè) 控制圍巖變形，充分發(fā)揮圍巖的自承能力。 通過(guò) 對(duì)圍巖的力學(xué)形態(tài)以及支護(hù)結(jié)構(gòu)的工作狀態(tài)的監(jiān)控量測(cè)來(lái)評(píng)價(jià)設(shè)計(jì)施工水平并及時(shí)的改進(jìn)與調(diào)整。 隧道采用管棚作為超前支護(hù)， 初期支護(hù)采用超前或徑向注漿錨桿 (小導(dǎo)管 )、型鋼鋼架、鋼格柵及掛網(wǎng)濕噴等施工技術(shù) ，當(dāng)圍巖與初期支護(hù)基本穩(wěn)定后施做二次襯砌 關(guān)鍵詞： 高速公路 隧道 結(jié)構(gòu)設(shè)計(jì) 施工 新奧 法 Abstract The design plete the left hand lane tunnel red wood design and construction .The length of the left line of Mu Chong Tunnel is1825 meter, it crosses karst areas, Formation is mainly made of sandstone, shale and siltstone Cambrian strata. First of all, based on engineering requirements and design specifications to determine the tunnel section, And then under the load the structure law of the structure through the ANSYS calculation of strength, according to the results of reinforcement calculation. The main tunnel level to grade Ⅱ , Ⅲ level, Ⅳ and Ⅴ grade classbased. Grade Ⅱ and Ⅲ level design is more stable rock so use fullface excavation, Level and grade Ⅳ Ⅴ rock, rock the situation as a result of poor design of the excavation crosssection using a larger hole in the wall guide method. NATM is the main tunnel construction methods. NATM is the construction method that Shotcrete Anchor is the main means of support by detecting the the monitoring of mechanical form of rock and Supporting the work of state structures evaluate the level of design and construction of improvements in a timely manner with the adjustment Lead pipe roof supports the early Support adopts advanced or radial grouting bolt linked work of steel gratings and construction technology, such as wetspray. When the rock and the initial support facilities achieve stability then secondary lining Keywords: Expressway Tunnel Design of lining structure Construction NATM 目錄 第 1 章 緒論 ....................................................................................................................... 1 課題研究背景 ....................................................................................................... 1 國(guó)內(nèi)公路隧道發(fā)展?fàn)顩r ....................................................................................... 1 國(guó)外公路隧道發(fā)展?fàn)顩r ....................................................................................... 2 設(shè)計(jì)內(nèi)容 ............................................................................................................... 3 主要研究的內(nèi)容 ....................................................................................... 3 基本要求 ................................................................................................... 3 第 2 章 設(shè)計(jì)的原則 和標(biāo)準(zhǔn) ............................................................................................... 4 設(shè)計(jì)依據(jù) ............................................................................................................... 4 主要技術(shù)指標(biāo) ....................................................................................................... 4 第 3 章 工程概況 ............................................................................................................... 5 工程概況 ............................................................................................................... 5 工程地質(zhì)及水文地質(zhì) ........................................................................................... 5 地形地貌 ................................................................................................... 5 地質(zhì)構(gòu)造 ................................................................................................... 5 地層巖性 ................................................................................................... 7 水文地質(zhì)特征 ........................................................................................... 9 巖溶發(fā)育特征 ........................................................................................... 9 不良地質(zhì)現(xiàn)象 ........................................................................................... 9 地震烈度 ................................................................................................. 10 隧道圍巖分類(lèi) ......................................................................................... 10 第 4 章 內(nèi)輪廓的確定 ..................................................................................................... 12 內(nèi)部?jī)艨盏拇_定 ................................................................................................. 12 結(jié)構(gòu)斷面形式及尺寸初步擬定 ......................................................................... 13 第 5 章 公路隧道襯砌結(jié)構(gòu)的設(shè)計(jì)和計(jì)算 ..................................................................... 14 圍巖壓力計(jì)算 ..................................................................................................... 14 Ⅲ級(jí)圍巖壓力計(jì)算 ................................................................................. 14 Ⅴ級(jí)圍巖壓力計(jì)算 ................................................................................. 14 襯砌內(nèi)力計(jì)算 ..................................................................................................... 15 ANSYS 加載求襯砌內(nèi)力過(guò)程 ............................................................................... 15 Ⅲ級(jí)圍巖襯砌內(nèi)力計(jì)算與強(qiáng)度檢驗(yàn) ..................................................... 16 Ⅴ級(jí)圍巖襯砌內(nèi)力計(jì)算與強(qiáng)度檢算 ..................................................... 19 襯砌結(jié)構(gòu)強(qiáng)度檢算原理 ..................................................................................... 22 襯砌截面配筋計(jì)算 ............................................................................................. 23 截面配筋原理 ......................................................................................... 23 Ⅲ級(jí)圍巖配筋計(jì)算 ................................................................................. 24 Ⅴ級(jí)圍巖配筋計(jì)算 ...................