【正文】 1 山東交通學(xué)院 2020 屆畢業(yè)生畢業(yè)設(shè)計(jì) 設(shè) 計(jì) 書 題目： 濱德高速 430m 裝配式預(yù)應(yīng)力混凝土簡支 T 梁橋施工圖設(shè)計(jì) 專 業(yè)： 土木工程 班 級： 土木 學(xué) 號： 姓 名： 指導(dǎo)教師： 完成日期： 2020 年 6 月 王騰飛：濱徳高速 430 裝配式預(yù)應(yīng)力混凝土簡支 T 梁橋施工圖設(shè)計(jì) 2 摘 要 預(yù)應(yīng)力混凝土梁式橋在我國橋梁建筑上占我重要的地位，在目前，對于中小跨徑的 永久性橋梁，無論是公路橋梁或者城市橋梁，都在盡量 采用預(yù)應(yīng)力混凝土梁式橋，因?yàn)? 這種橋梁具有就地取材，工業(yè)化施工，耐久性好，適應(yīng)性強(qiáng)，整體性好以及美觀等多種優(yōu)點(diǎn)。 本設(shè)計(jì)采用裝配式簡支 T 梁結(jié)構(gòu)，其上部結(jié)構(gòu)由主梁、橫隔梁、行車道板，橋面部 分和支座等組成，顯然主梁是橋梁的主要承重構(gòu)件。其主梁通過橫梁和行車道板連接成 為整體，使車輛荷載在各主梁之間有良好的橫向分布。橋面部分包括橋面鋪裝、伸縮裝 置和欄桿等組成，這些構(gòu)造雖然不是橋梁的主要承重構(gòu)件，但它們的設(shè)計(jì)與施工直接關(guān) 系到橋梁整體的功能與安全，這里在本設(shè)計(jì)中也給予了詳細(xì)的說明。 本設(shè)計(jì)主要受跨中 正彎矩的控制，當(dāng)跨徑增大時(shí)，跨中由恒載和活載產(chǎn)生的彎矩將 急劇增加，是材料的強(qiáng)度大部分為結(jié)構(gòu)重力所消耗，因而限制的起跨越能力，本設(shè)計(jì)采 用 27m 標(biāo)準(zhǔn)跨徑，合理地解決了這一問題。在設(shè)計(jì)中通過主梁內(nèi)力計(jì)算、應(yīng)力鋼筋的布 置、主梁截面強(qiáng)度與應(yīng)力驗(yàn)算、行車道板及支座、墩臺等等設(shè)計(jì)，完美地構(gòu)造了一座裝 配式預(yù)應(yīng)力混凝土簡支 T 梁橋，所驗(yàn)算完全符合要求，所用方法均與新規(guī)范相對應(yīng)。本 設(shè)計(jì)重點(diǎn)突出了預(yù)應(yīng)力在橋梁中的應(yīng)用，這也正體現(xiàn)了我國橋梁的發(fā)展趨勢。 關(guān)鍵詞：預(yù)應(yīng)力，簡支 T 梁，后張法，應(yīng)力驗(yàn) 算 3 Abstract The prestressed concrete beam plate bridge occupies my important status in our bridge construction, in at present, regarding small span permanent bridge, regardless of is the highway bridge or the city bridge, all as far as possible is using the prestressed concrete beam plate bridge, because this kind of bridge has makes use of local materials, the industrialization construction, the durability is good, patible, integrity good as well asartistic and so on many kinds of merits. This design uses assembly type simple support T beam structure, its superstructure by the king post, septum transversum beam, the lane board, the bridge floor part and the support and so on is posed, the obvious king post is the bridge main carrier. Its king post connects into the whole through the crossbeam and the lane board, enable the vehicles load to have the good traverse between various king posts .Bridge floor part including positions and so on flooring, expansion and contraction installment and parapet, these structures although is not the bridge main carrier, but their design and the construction relates the bridge whole directly the function and the security, here has also given the detailed explanation in this design. This design mainly steps the sagging moment control, when the span increases, cross the bending moment which produces by the dead load and the live load the sharp growth, is the material intensity majority of consumes for the structure gravity, thus limits the spanning ability, this design uses the 27m standard span, has solved this problem reasonably. In the design through the king post endogenic force putation, the stress steel bar arrangement, king post section intensity and stress checking calculation, lane board and support, pillar Taiwan and so on designs, a structure assembly type prestressed concrete simple support T beam bridge, the checking calculation pletely has conformed to the requirement perfectly, uses the method and the new standard corresponds. This design has highlighted the prestressed with emphasis in the bridge application, this has also been manifesting our country bridge trend of development. Key word: Prestressed， Simple support T beam， Tensioning， Stress checking calculation 王騰飛：濱徳高速 430 裝配式預(yù)應(yīng)力混凝土簡支 T 梁橋施工圖設(shè)計(jì) 4 目 錄 前言 ......................................................................1 第 1 章 .橋梁設(shè)計(jì)基本資料 ..................................................1 濱德高速 K72+ 中橋工程地質(zhì)資 料 ...................................1 氣候條件 .........................................................1 地質(zhì)資料 ............................................................2 設(shè)計(jì)規(guī)范 ..............................................................3 第 2 章 橋型設(shè)計(jì)方 案 ....................................................5 方案一：預(yù)應(yīng)力鋼筋混凝土簡支梁（錐型錨具） .............................5 基本構(gòu)造布置 ........................................................5 設(shè)計(jì)荷載 ............................................................5 方案二：鋼筋混凝土箱形拱 橋 ...........................................6 方案簡介 ............................................................6 尺寸擬定 ........................................................6 橋面鋪裝及縱橫坡度 ..................................................7 施工方法 ........................................................7 總結(jié) ...............................................................7 第 3 章上部結(jié)構(gòu)設(shè)計(jì) .....................................................8 設(shè)計(jì)資料及結(jié)構(gòu)布置 ..................................................8 設(shè)計(jì)資料 ............................................................8 橫截面布置 .........................................................8 橫截面沿跨長變化 .................................................11 橫隔梁的布置 ....................................................11 主梁作用效應(yīng)計(jì)算 .....................................................11 恒載內(nèi)力計(jì)算 ....................................................11 活載內(nèi)力計(jì)算 ....................................................13 計(jì)算橫向分布系數(shù) .................................................13 計(jì)算最大彎矩和最大剪力 ..........................................17 主梁效應(yīng)作用組合 ...................................................21 鋼筋面積的估算及鋼束布置 ..........................................21 b39。f 的計(jì)算 .........................................21 鋼束預(yù)應(yīng)力損失估算 .................................................30 預(yù)應(yīng)力鋼筋與管道間摩擦引起的預(yù)應(yīng)力損失σ l1 ........................30 錨具變形、鋼絲回縮引起的應(yīng)力損失σl2................................30 預(yù)應(yīng)力鋼筋分批張拉時(shí)混凝土彈性壓縮引起的應(yīng)力損失σ l4...............32 鋼筋松弛引起的預(yù)應(yīng)力損失σ l5.......................................32 混凝土收縮、徐變引起的損失σ l6. ....................................32 應(yīng)力驗(yàn)算 ...........................................................35 5 短暫狀況的正應(yīng)力驗(yàn)算 ..............................................35 持久狀況的正應(yīng)力驗(yàn)算 ........................................