【文章內(nèi)容簡介】 he permanent effect .......................................................... 11 Calculation of variable action effect.......................................................... 13 Chapter4 Design and reinforcement strength checking ................................................20 Reinforcement design ........................................................................................ 20 Determine the section size ....................................................................... 20 Judge T beam type ................................................................................. 21 Calculated reinfprcement section.............................................................. 21 Calculation of shear strengh..................................................................... 22 Crosssection strength checking .......................................................................... 28 Selected oblique section top position ........................................................ 28 VII Shear bearing capacity of oblique section review ........................................ 28 Width of crack .................................................................................................. 30 Deformation checking ....................................................................................... 31 Chapter5 Calculation of the beam diaphragm .............................................................35 Internal force calculation of horizontal beam ........................................................ 35 Identified roles in midspan diaphragm beam of variable action..................... 35 Diaphragm beam internal force influence line ............................................ 36 Cross section calculation ......................................................................... 37 Horizontal beam reinforcement design................................................................. 38 Positive bending moment calculation of reinforcement................................ 38 Negative moment reinforcement calculation .............................................. 39 Shear calculation and reinforcement design ............................................... 40 Chapter6 Plate calculation of the carriageway.............................................................41 Load calculation ............................................................................................... 41 Dead load internal force calculation .......................................................... 41 Internal force calculation of variable loads................................................. 42 Calculation of load bination ............................................................... 43 Checking with the strength of reinforcing bars ...................................................... 43 Chapter7 Bearings .....................................................................................................45 Plane size determined ........................................................................................ 45 Determine the bearing height.............................................................................. 45 Bearing checking deflection case ........................................................................ 46 Stability against sliding rubber bearing checking................................................... 47 Chapter8 Bored pile, the calculation of double column bridge pier ...............................48 Design information ........................................................................................... 48 Beam calculation .............................................................................................. 49 Load calculation..................................................................................... 49 Internal force calculation ......................................................................... 58 Sectional reinforcement design and check on the bearing capacity ................ 60 Pier column design............................................................................................ 62 Oad calculation ...................................................................................... 62 Cross section reinforcement calculation and stress calculation...................... 67 bored pile calculation ........................................................................................ 67 VIII load calculation...................................................................................... 67 The calculation of piles ........................................................................... 69 Pile internal force calculation................................................................... 70 Pile section reinforcement and checking putation of bearing capacity ...... 72 Pier top horizontal displacement calculation .............................................. 74 Conclusion ...................................................................................................................77 Thanks.........................................................................................................................78 References....................................................................................................................79 1 第 1 章 緒論 設(shè)計(jì)選題前提 我國進(jìn)入 21 世紀(jì)以來，經(jīng)濟(jì)有著飛躍的發(fā)展，從改革開放到今天我國的國民生產(chǎn)總值一直處于增長的態(tài)勢，即使是 08 年的 全球性質(zhì)的經(jīng)濟(jì)危機(jī)，對我國的經(jīng)濟(jì)發(fā)展也沒有多大的影響。飛速發(fā)展的經(jīng)濟(jì)對我國的公路橋梁等基礎(chǔ)建設(shè)提出了新的要求。 在交通運(yùn)輸中，橋梁和高速公路是其發(fā)展的必須和基礎(chǔ)，橋梁又是整個(gè)交通土建專業(yè)的一個(gè)重點(diǎn)。從第一座鋼筋混凝土結(jié)構(gòu)的橋梁問世到今天已經(jīng)有百年的歷史，經(jīng)過這一個(gè)多世紀(jì)的發(fā)展，鋼筋混凝土結(jié)構(gòu)的橋梁不但已經(jīng)在理論上形成了完善的體制，在施工上也發(fā)展的比較成熟。現(xiàn)階段，使用鋼筋混凝土建造的橋梁，種類多，數(shù)量多，在橋梁工程上再有很重要的地位。 穆棱河簡支梁橋位于黑龍江省東南部雞東縣境內(nèi)，此橋的建設(shè)必將為當(dāng)?shù)刂苓叺慕?jīng) 濟(jì)發(fā)展和文化交流起到積極的推動(dòng)作用。 方案比選 一般應(yīng)服從路線的總體方向并應(yīng)滿足接線的要求，路、橋綜合考慮。橋位宜選擇在河道順直，河槽穩(wěn)定的地段；應(yīng)避免在河叉、島嶼、沙洲、故河道、急彎以及易形成流冰、流木阻塞的地段。應(yīng)盡量選在河道較窄的地方跨越黃河，以縮短橋長、降低造價(jià)、節(jié)省