65 + 115 +65 m公路預(yù)應(yīng)力混凝土雙薄壁墩連續(xù)剛構(gòu)橋設(shè)計(jì) 畢業(yè)設(shè)計(jì)-文庫吧
2025-10-20 16:56 本頁面
【正文】 e section of this continuing steel bridge may have positive structural forces and negative structural forces， therefore, the arrangement of the prestressing reinforcement should vary in accordance with the change of structural forces. The continuing steel bridge is a bination of continuing beam and double thinkwall piers (flexible), and it also changes the structure’s stress patibility under the level of loads. Design is made on the basis of lots of real projects case, so it gives a detailed analysis and study of the structure. The cross section is in form of singlebox singleroom , the height of the beam changes according to the crosssection parabolic ，from the supports the maximal height is to the inter Main beamheight of , and the thick of the Roof is 22cm. In order to alleviate the difficulties of construction, the thick of the bottom ,bined with the stress feature of continuing steel bridge, changes in linear, reducing from the supports to the inter Main beam, the thick of the supports is and the inter Main beam is . Upon the basis of the section design, making an analysis of internal forces of the structure by BSAS， evaluate the amounts of the reinforcement and arrange them accordingly, then check the capability of the main controlling section. Drawingthe structural construction plan, including the arrangement plan of the bridge span, the procedure of construction, etc. then translate them into English ,finally make the design illustration and Microsoft Word. Key words: prestressing concrete continuing steel bridge。 cantilever construction。 analysis of internal forces。 prestressing lose。 secondary internal forces 第 1 章 緒 論 ........................................................... 1 設(shè)計(jì)特點(diǎn) .................................................................................................................. 1 受力特點(diǎn) .................................................................................................................. 2 構(gòu)造特點(diǎn) .................................................................................................................. 2 零號(hào)塊 ...................................................... 2 橫隔板 ...................................................... 3 合攏段 ...................................................... 3 第 2 章 橋跨總體布置及結(jié)構(gòu)主要尺寸 ..................................... 4 橋跨結(jié)構(gòu)圖式及尺寸擬定 ...................................................................................... 4 設(shè)計(jì)技術(shù)標(biāo)準(zhǔn)： .............................................. 4 結(jié)構(gòu)圖式 .................................................... 4 主要尺寸擬定 ................................................ 5 主梁分段與施工階段的劃分 .................................................................................. 6 分段原 則 .................................................... 6 具體分段 .................................................... 6 施工階段的劃分 .............................................. 6 第 3 章 荷載內(nèi)力計(jì)算 ................................................... 8 恒載內(nèi)力計(jì)算 .......................................................................................................... 8 計(jì)算方法 .................................................... 8 計(jì)算結(jié)果 .................................................... 9 活載內(nèi)力計(jì)算 ........................................................................................................ 17 橫向分布系數(shù)的考慮 ......................................... 18 活載因子的計(jì)算 ............................................. 18 設(shè)計(jì)結(jié)果 .................................................. 18 第 4 章 預(yù)應(yīng)力鋼束的估算與布置 ......................................... 30 預(yù)應(yīng)力筋的估算 .................................................................................................... 30 預(yù)應(yīng)力筋的估算方法 ......................................... 30 預(yù)應(yīng)力筋的估算 ............................................. 34 預(yù)應(yīng)力鋼束的布置 .........
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