互通區(qū)預(yù)應(yīng)力混凝土連續(xù)箱梁現(xiàn)澆施工方案-免費(fèi)閱讀
【正文】 G′=[（+）125] 翼緣板位置翼緣板平均厚度為28cm，寬度為175cm，驗(yàn)算長度為1m，鋼筋砼重量以25KN/m3計(jì)，預(yù)壓荷載為箱梁自重的115%。荷載重q1取值為：（）=30KN/m2 底模及內(nèi)模構(gòu)造荷載q2=扣件式鋼管支架自重(按10m高度計(jì)算)a、立桿自重（采用Ф48）q31=10m=b、橫桿自重q32=(+)11=c、扣件自重直角扣件: q33=22個(gè)= 對(duì)接扣件: q34=1個(gè)=所以扣件式鋼管支架自重: q3= q31+ q32+ q33+ q34 =+++=施工活荷載(，以3 KN/ m2計(jì)，基于安全考慮，取4KN/ m2)q4=4KN/ m2荷載組合施工恒載:NGK=(q1+ q2)+ q3=(30+)+=活荷載: NQK= q4=4= KN/根荷載組合:N= NGK+NQK=+=（二）、鋼管支架的穩(wěn)定性檢算跨中荷載檢算單根鋼管截面面積：A=424mm2；回轉(zhuǎn)半徑：i=按照《扣件式規(guī)范》，由公式⑴或公式⑵計(jì)算：l0=k1uh ⑴l0=h+2a ⑵k1—— 計(jì)算長度附加系數(shù)，；u —— 計(jì)算長度系數(shù)，參照《扣件式規(guī)范》；u=；a —— 立桿上端伸出頂層橫桿中心線至模板支撐點(diǎn)的長度；a=根據(jù)公式⑴得：l0==由于λ=l0/i=根據(jù)公式⑵得：l0=+2=由于λ=l0/i=180/=取長細(xì)比λ=，查表得φ=N/(φA)= 15310 /(424) =≤205Mpa(Q235鋼管容許應(yīng)力205Mpa)根據(jù)以上計(jì)算可知，立桿的穩(wěn)定性符合要求。附件2：連續(xù)箱梁現(xiàn)澆支架設(shè)計(jì)方案及力學(xué)檢算一、計(jì)算依據(jù)《建筑施工扣件式鋼管腳手架安全技術(shù)規(guī)范》(JGJ1302001)二、支架設(shè)計(jì)方案根據(jù)我項(xiàng)目經(jīng)理部實(shí)際情況，互通區(qū)E匝道EK0++24m+18m+18m連續(xù)箱梁現(xiàn)澆支架擬采用Ф48。施工現(xiàn)場(chǎng)劃分衛(wèi)生責(zé)任區(qū)，明確每個(gè)責(zé)任區(qū)責(zé)任人，從而落實(shí)責(zé)任區(qū)的管理責(zé)任。,確保施工需要和生活秩序正常。質(zhì)量自檢制度現(xiàn)澆箱梁工程實(shí)行項(xiàng)目經(jīng)理部、專業(yè)施工隊(duì)兩級(jí)自檢制度，選派具有豐富施工經(jīng)驗(yàn)和取得相應(yīng)資質(zhì)的質(zhì)量檢驗(yàn)工程師擔(dān)任工程檢查工作，并接受監(jiān)理工程師的監(jiān)督檢查，建立完善的質(zhì)量自檢體系和自檢制度，使工程質(zhì)量始終處于受控狀態(tài)。并保證在梁體內(nèi)不留任何雜物。 D對(duì)灌漿水泥要進(jìn)行仔細(xì)試驗(yàn)和檢查，不允許使用結(jié)塊及過期的水泥。暫停壓漿機(jī)。I開始真空輔助壓漿。注意保證排氣口要垂直朝正上方。6%范圍內(nèi)，如超出誤差范圍，應(yīng)放張且查明原因后重新張拉。當(dāng)同條件養(yǎng)護(hù)下的砼試件強(qiáng)度達(dá)到設(shè)計(jì)強(qiáng)度的90%后，預(yù)應(yīng)力筋即可張拉。，以確保底板厚度符合設(shè)計(jì)要求。s education practice is to seize against four wind this focus on centralized solve outstanding problems asked County, township leadership and leading cadres of the four winds, the disadvantages of the style, scale behavior to a large scale investigation, overhaul, cleaning greatly. At the same time, respond to the concerns of the masses, safeguard the interests of the masses, pay attention to solve practical problems, solve the people around the unwholesome tendencies especially on eat, take the card, Yong lazy luxury, extravagance and waste fees, privileges and other issues, timely and effective, without any discount to solve, to improve the style of real implementation of the requirements of real to the grassroots, real let group Benefit the public.(a) focus on solving the four winds outstanding issuesThe central and provincial requirements, the county leadership and leading cadres of key performance concept is not correct, do not dare to play, to engage in image project, political project, a leadership guide, a set of ideas, orders and prohibitions, and a policy, there are countermeasures county. The units directly under the heavy focus on solving Yung lazy drag, buck passing skin, work is not implemented, the service is not active. The dynamic problem of law enforcement and supervision departments and window units, service industry mainly solve the door hard, ugly face, something difficult, and arbitrary charges, fines, levies, and breach of privilege, chinakayao, not the problem of law. The township, street The collar of leading bodies and leading cadres to solve key does nottheir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance the petitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the petitive strength, walking business road the petition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resources within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winwin principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examination and approval procedures, strict regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the development, ensure that the value of stateowned assets.(five
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