m跨径95m桥宽预制箱梁计算书2013-11

1、.influence. Only establish a correct concept of values, the concept of power, performance, from mind set career goals for the party and the people, and to properly treat and use their powers, creating a stand the inspection history of achievements. Instead, the view does not have the correct values,

2、 the concept of power, achievement, accelerated development of not only impossible, but also bred and spreading of formalism and bureaucratism and corruption, corrosion of cadres, corrupted party and society, damage the party and the masses. Therefore, the leading cadres should want to resist corrup

3、tion, guard of Defense, will first have to establish the correct values, the concept of power and start Outlook. It should be noted that currently the County ranks of cadres are good, but it cannot be denied that some of our leading cadres, in the treatment of values, power, performance and other is

4、sues still exist on some wrong ideas and behavior. On value orientation of treating issues such as, some leading cadres tend to put self-interest above the overall interests, there is a "Government powers, powers of personal interests, personal power" phenomenon. In treats power of problem

5、 Shang, "officer" read not are, some leaders too addiction Yu power pursuit, adjustment to better of location Shi on complacency, and carried away, once didn't adjustment good on has negative slack, and sent complaints told grumbling, cannot to good of mentality right treats personal o

6、f retreat circulation; some only may official, and unwilling to work, always calculations personal gains and losses, each other comparisons, than fame, and than status, and than income, is not than contribution; very minority leaders even put power as profit of tool, using terms seek self-interest ,

7、 Do not give benefits didn't act, gives the advantage to do. In treats achievement of problem Shang, some leaders also lack created achievement of strongly pursuit, development confidence insufficient, and thought not liberation, work muddle along, and perfunctory, unambitious, and inaction; als

8、o some eager for quick success and, work bishijiuxu, on easy see have see of achievement "happy", on unknown of hard work is unwilling to input energy, even make formalism, and pendulum showy, habits Yu do cosmetic, no real sank heart June to caught development, and so on. These problems a

9、re not solved, is bound to seriously affect the growth of leading cadres, and even some cadres resorting to crime as a result of the road, eventually come to downfall end. As a leader, only to establish the correct values, the concept of power and Outlook, always keep the spirit of noble pursuit, ca

10、n we from the thought of constructing the degeneration in the deep defence, . Plenum put forward the important exposition of the construction of Socialist core value system, and pointed out the direction for us. Socialist core value system consists of four basic elements: Marxist guiding ideology, t

11、he common ideal of socialism with Chinese characteristics, patriotism at the core of national spirit and innovation as the core spirit of the times, with "eight honors and eight disgraces" as the main content of socialist concept of honor and disgrace. From these four elements, especially

12、from the "eight honors and eight disgraces" as the main content of Socialist honor or disgrace view can be seen, fundamentally reflects the values of the Socialist core value system requirements for leading cadres to establish the correct values, form the Basic code of ethics and code of c

13、onduct provides the basis and standard. Our leading cadres must establish with the "eight预制箱梁通用图编制桥梁专业设计计算书计算计算书： 25m跨径9.5m桥宽简支正交预应力混凝土预制箱梁计算书编号： 01计 算： 谭毅平 年 月 日校 核： 刘力英 年 月 日专业负责： 刘力英 年 月 日审 核： 桂晓明 年 月 日审 定： 刘 芳 年 月 日 #；honors and eight disgraces" as the main content of Socialist Unity o

14、f values, in the performance of his duties and exercise his powers, make the value of our work and the party's request, is consistent with the interests of the people, harmony. Secondly, the basic ways to clear positive work ethic. Personal sense of leading cadres, and establish the correct valu

15、es, the main approach is to strengthen the transformation of the subjective world, guarantee political loyalty and increase personal morality and personal values of obedience, unity, coordination in the value of the party and the people. Specifically, you want to deal with several relations in pract

16、ice: first, the relationship between public and private. Always look to grasp the overall situation, unconditional obedience to the party and the people's interests, dare to fight against all damages the interests of the party and people. Second, personal relationships and others. Adhere to the

17、working public, treat people with sincerity, kindness, not things, on behalf of themselves, even beggar-thy-neighbour, beggar-thy-neighbour. Third, the relationship between work and life. At work, dedication, hard work, and the first to bear hardships, pleasures at the back, and withstand the tempta

18、tions of power, money, sex, hold firm in his heel. Only so that the rational consciousness, can in practice deal with powers and responsibilities between personal interests and the interests of the people, can be a good cadres of the party and people's satisfaction. In daily life, "arroganc

19、e is not, to be vertical, not, volunteers not full", proper selection of personal hobbies, said ethics, conduct, according to the standard time to check every aspect of their lives, discard unsuitable for himself or herself the "hobby", and develop a positive, healthy and noble life,

20、keeping lofty spiritual pursuit. (Ii) set and insisted party, and ruling for people of power views, real for people Palm good right with good right power, in Chinese dictionary has two layer meaning: a is political Shang of forced power, as power, is national of forced power; II is duties range with

21、in of dominated power, it with must of positions phase contact, that has has must positions on has has corresponding of a species power. Through these two meanings can be seen, once a person has "power" is meant to have a certain amount of control and command of the force, with "power

22、" who tend to be more convenient than the average person to get some fame and fortune. So now some leading cadres often put the "power" and "right" together, "force" as "good". . Jobs is to serve the people of power tools, it means that responsibilities a

23、nd obligations. Gate of the ancient city of Pingyao County Government in Shanxi province are a couplet: "people eating the food, wearing clothes of people, say the people bullied, also people is not, one is not, and do not speak a useless, where one officer". This is a magistrate of Pingya

24、o ancient inspiration, it tells us that this kind of truth: officials to bear in mind the people's hardships and work for the people, must not oppress the people. We have power, if careless, do nothing, the tubes are not serious pipes, which do not take the initiative, the completion of the task

25、 is not completed, the responsibility is not responsible, is the lack of responsibility. If self-dealing, abusing power for personal gain, even flinging, throw more deviate from the direction of the correct Outlook on power. Magistrate Zheng Banqiao's poems in the Qing dynasty: "Ya Chai lay

26、 listening to the rustling of bamboo, the suspect25m跨径9.5m桥宽简支正交预应力混凝土预制箱梁计算书目 录1 计算依据11.1 基础资料11.1.1 设计规范11.1.2 主要材料11.1.3 标准11.1.4 设计要点21.2 横断面布置21.2.1 横断面布置图21.2.2 预制箱梁截面尺寸31.2.3 预应力布置断面图32 汽车荷载横向分布系数分析62.1 考虑车道折减系数的横向分布系数计算62.1.1 跨中横向分布系数62.1.2 支点处横向分布系数72.2 汽车荷载冲击系数和纵向折减系数计算82.2.1 汽车荷载冲击系数82.2.

27、2 汽车荷载纵向折减系数83 计算输入与模型83.1 施工阶段划分83.2 预应力束及纵向钢筋布置93.3 输入数据93.4 阶段模型104 预制箱梁结构计算（25m跨径9.5m桥宽）104.1 中梁持久状况承载能力极限状态计算104.1.1 正截面抗弯承载力104.1.2 斜截面抗剪承载力124.2 中梁持久状况正常使用极限状态计算144.2.1 正截面抗裂验算144.2.2 斜截面抗裂验算144.2.3 挠度验算与预拱度设置154.3 中梁持久状况和短暂状况构件应力计算164.3.1 受压区砼最大压应力验算164.3.2 受拉区预应力钢筋最大拉应力验算及引伸量164.3.3 混凝土主压应力

28、验算174.3.4 混凝土主拉应力验算174.3.5 施工阶段应力验算174.4 中梁支座反力计算194.5 边梁持久状况承载能力极限状态计算194.5.1 正截面抗弯承载力194.5.2 斜截面抗剪承载力214.6 边梁持久状况正常使用极限状态计算234.6.1 正截面抗裂验算234.6.2 斜截面抗裂验算244.6.3 挠度验算与预拱度设置244.7 边梁持久状况和短暂状况构件应力计算254.7.1 受压区砼的最大压应力验算254.7.2 受拉区预应力钢筋的最大拉应力验算及引伸量264.7.3 混凝土主压应力验算264.7.4 混凝土主拉应力验算264.7.5 施工阶段应力验算274.8

29、边梁支座反力计算284.9 结论295 关于预制箱梁边梁和中梁计算结果汇总295.1 扩展计算说明295.2 边梁和中梁计算结果比较295.3 结论306 附图（模型输入数据）306.1 中梁306.2 边梁3425m跨径简支正交预应力混凝土预制箱梁计算书（桥宽9.5米两车道无人行道）1 计算依据1.1 基础资料1.1.1 设计规范1）城市桥梁设计规范CJJ 11-2011（简称城规）2）公路桥涵设计通用规范JTG D602004（简称通规）3）公路钢筋混凝土及预应力混凝土设计规范JTG D622004（简称预规）1.1.2 主要材料1）混凝土：预制箱梁、现浇现浇层及湿接缝为C50；2）预应力

30、钢绞线：采用Øs15.2低松弛预应力钢绞线，fpk=1860MPa，Ep=1.95×105MPa； 3）波纹管：采用塑料波纹管，摩阻系数取0.17，管道偏差系数取0.0015；4）锚具：定型系列锚具、真空灌浆，均采用圆锚；钢筋回缩和锚具变形取6mm（单端）；5）普通钢筋：HRB335：fsd=280MPa，Es=2.0´105MPa；R235:fsd=195MPa，Es=2.1´105MPa。 1.1.3 标准跨径：桥梁标准跨径lk=25m；计算跨径（正交、简支）l=24.3m；预制箱梁长24.9m梁高：140cm高预制箱梁+10cm厚桥面现浇层桥面宽度

31、：桥宽9.5m：0.5m（防撞墙）+8.5m（车行道）+0.5m（防撞墙）设计荷载：1）汽车荷载：城市A级，2车道；2）温度梯度：按桥梁通用设计规范10cm沥青砼铺装层温度梯度计算；竖向日照正温差 T1=14,T2=5.5，A=300mm，竖向日照反温差 T1= -7,T2=-2.75，A=300mm； 3）整体温差：不考虑4）一期恒载：自重计算时，混凝土容重取26kN/m3预制梁端横隔重：边梁：(0.559+0.828)´0.25´26=9.02kN中梁：(0.559´2+0.828)´0.25´26=12.65kN浇筑现浇层时增加的端横隔重

32、：边梁：0.36´0.25´1.07´26=2.50kN中梁：0.72 ´0.25´1.07´26=5.01kN5）二期恒载：考虑以下各项值混凝土桥面现浇层：共计7cm厚度： 5cm现浇层及2cm附加超方荷载，3.06´0.07´26=5.57kN/m（边梁）；3.12´0.07´26=5.68kN/m（中梁）沥青铺装层：10cm，容重：24kN/m3防撞墙：按单侧10kN/m计，近似按横向分布系数分配重量，各梁的横向分布影响线计算见第2.1节。1.边梁：梁端： q2=3.06´0.0

33、7´26+2.69´0.1´24+10=22.03kN/mL/4跨中：q2=3.06´0.07´26+2.69´0.1´24+10´(0.4747+0.2192)=18.96kN/m式中，0.4747和0.2192分别为边梁在防撞墙重心处横向分布影响线（距离防撞墙外边缘0.208 m）梁端至L/4范围内按22.0318.96kN/m线性插值计算。2.中梁：梁端： q2=3.12´0.07´26+3.12´0.1´24=13.17kN/m L/4跨中：q2=3.12´

34、0.07´26+3.12´0.1´24+10´0.3070´2=19.31 kN/m 式中，0.3070为中梁在防撞墙重心处横向分布影响线（距离防撞墙外边缘0.208 m）梁端至L/4范围内按13.1719.31kN/m线性插值计算。结构重要性系数：1.1。设计安全等级：一级。环境条件：按I类环境考虑，计算收缩徐变3650天，存梁期为60天。1.1.4 设计要点采用以荷载横向分布系数和平面杆系有限元电算相结合的计算方法进行结构分析，选择横向分布系数最大的边梁、中梁进行控制计算，并按预规各项要求进行验算。横向分布系数的计算方法：杠杆法：用于计算荷

35、载位于主梁支点处的横向分布系数。 刚接板梁法：用于计算荷载位于梁桥跨中至L/4处的横向分布系数。支点至L/4点之间活载横向分布系数按线性插值求得本结构为简支结构（多跨结构为先简支后桥面连续），按后张法部分预应力混凝土A类构件设计，主梁计算按组合截面分阶段考虑。现浇层未达到设计强度前,按预制结构独自承受上部恒载计算及施工活载；在运营状态下按预制梁、湿接缝及现浇层（考虑5cm厚）共同承受上部恒载和活载计算。预应力钢束采用两端张拉，锚下张拉控制应力scon=1395MPa环境年平均相对湿度RH=80%。计算混凝土收缩、徐变引起的预应力损失时传力锚固龄期为7d。存梁时间为不超过60d。1.2 横断面布

36、置1.2.1 横断面布置图图1.1.1 预制箱梁跨中横断面图（尺寸单位：mm）图1.1.2 预制箱梁支点处横断面图（尺寸单位：mm）说明：预制箱梁从左到右依次编号为：13。1.2.2 预制箱梁截面尺寸图1.2.1 中梁支点处横断面图 图1.2.2 中梁跨中横断面图图1.2.3 边梁支点处横断面图 图1.2.4 边梁跨中横断面图1.2.3 预应力布置断面图支点处截面 跨中截面图1.2.5 中梁钢束断面图（尺寸单位：mm）支点处截面 跨中截面图1.2.6 边梁钢束断面图（尺寸单位：mm）边梁钢束中，N1、N2为4Øs15.2，N3、N4为5Øs15.2；中梁钢束中，N1、N2为

37、4Øs15.2，N3、N4为5Øs15.2。表1.2.1 钢束力学信息钢束根数控制应力回缩超拉MUK张拉方式孔道面积松弛率41395120%0.170.0015两端31170.351395120%0.170.0015两端31170.3表1.2.2 中梁钢束几何信息钢束号竖弯X竖弯Y竖弯R平弯X平弯Y平弯R1-12.3-0.450-12.3-0.6250-4.413-1.1460-10.376-0.618254.413-1.1460-4.413-0.48520012.3-0.4504.413-0.48520010.376-0.6182512.3-0.62502-12.3-0.

38、450-12.30.6250-4.413-1.1460-10.3760.618254.413-1.1460-4.4130.48520012.3-0.4504.4130.48520010.3760.6182512.30.62503-12.3-0.70-12.3-0.5630-6.013-1.2560-10.376-0.556256.013-1.2560-6.013-0.45812012.3-0.706.013-0.45812010.376-0.5562512.3-0.56304-12.3-0.70-12.30.5630-6.013-1.2560-10.3760.556256.013-1.2560

39、-6.0130.45812012.3-0.706.0130.45812010.3760.5562512.30.56305-12.3-0.950-12.3-0.50-7.613-1.3660-10.376-0.493257.613-1.3660-7.613-0.43310012.3-0.9507.613-0.43310010.376-0.4932512.3-0.506-12.3-0.950-12.30.50-7.613-1.3660-10.3760.493257.613-1.3660-7.6130.43310012.3-0.9507.6130.43310010.3760.4932512.30.5

40、07-12.3-1.3250-12.3-0.30-10.867-1.363012.3-0.3010.867-1.363012.3-1.32508-12.3-1.3250-12.30.30-10.867-1.363012.30.3010.867-1.363012.3-1.3250表1.2.3 边梁钢束几何信息钢束号竖弯X竖弯Y竖弯R平弯X平弯Y平弯R1-12.3-0.450-12.3-0.6550-4.413-1.1460-10.376-0.648254.413-1.1460-4.413-0.51520012.3-0.4504.413-0.51520010.376-0.6482512.3-0.6

41、5502-12.3-0.450-12.30.5950-4.413-1.1460-10.3760.588254.413-1.1460-4.4130.45520012.3-0.4504.4130.45520010.3760.5882512.30.59503-12.3-0.70-12.3-0.5930-6.013-1.2560-10.376-0.586256.013-1.2560-6.013-0.48812012.3-0.706.013-0.48812010.376-0.5862512.3-0.59304-12.3-0.70-12.30.5330-6.013-1.2560-10.3760.52625

42、6.013-1.2560-6.0130.42812012.3-0.706.0130.42812010.3760.5262512.30.53305-12.3-0.950-12.3-0.530-7.613-1.3660-10.376-0.523257.613-1.3660-7.613-0.46310012.3-0.9507.613-0.46310010.376-0.5232512.3-0.5306-12.3-0.950-12.30.470-7.613-1.3660-10.3760.463257.613-1.3660-7.6130.40310012.3-0.9507.6130.40310010.37

43、60.4632512.30.4707-12.3-1.3250-12.3-0.330-10.867-1.363012.3-0.33010.867-1.363012.3-1.32508-12.3-1.3250-12.30.270-10.867-1.363012.30.27010.867-1.363012.3-1.32502 汽车荷载横向分布系数分析2.1 考虑车道折减系数的横向分布系数计算（1）对于预制箱梁，使用铰接板（梁）法和刚接板梁法都偏差不大，这里用刚接板梁法计算；（2）支点处的横向分布系数按杠杆原理法计算；（3）支点至点之间的荷载横向分布系数按直线内插求得；（4）通规规定多车道桥梁上应考虑

44、多车道折减，当结构横向布置设计车道数大于2车道时，上述横向分布系数计算时按实际加载车道数，根据通规规定进行相应折减，本桥两车道，不需要乘折减横向系数。2.1.1 跨中横向分布系数跨中荷载横向分布系数采用刚接板梁法，选择横向分布系数最大的边梁、中梁进行控制计算。使用桥梁博士V3.1.0软件自带的刚接板梁法计算跨中截面的横向分布系数，计算结果如下：结构描述:主梁跨径: 24.300 m材料剪切模量/弯曲模量 = 0.430梁号梁宽弯惯矩扭惯矩左板宽左惯矩右板宽右惯矩连接13.0600.3060.3840.7130.0010.7730.001刚接23.1200.3070.3820.7730.0010

45、.7730.001刚接33.0600.3060.3840.7730.0010.7130.001刚接-桥面描述:人行道分隔带车行道中央分隔带车行道分隔带人行道0.0000.3708.5000.000 0.0000.0000.3700.000左车道数 = 2, 右车道数 = 0, 自动计入车道折减汽车等级: 汽车超-20级挂车等级: 无挂车荷载人群集度: 0.000 KPa-影响线数值:坐标X1#梁2#梁3#梁0.0000.4770.3060.2181.5000.4330.3250.2423.0600.3820.3460.2724.6200.3240.3520.3246.1800.2720.346

46、0.3827.7400.2420.3250.4339.2400.2180.3060.477-横向分布系数计算结果:梁号汽车挂车人群满人特载车列10.7390.0000.0000.0000.0000.00020.6830.0000.0000.0000.0000.00030.7390.0000.0000.0000.0000.000-计算成功完成2.1.2 支点处横向分布系数图2.1.1 1号梁的荷载横向影响线（尺寸单位：mm）图2.1.2 2号梁的荷载横向影响线（尺寸单位：mm）支点处的横向分布系数按杠杆原理法计算，使用图2.1.1和图2.1.2所示的模式手算。1号梁：mcq=(1+0.6488+

47、0.1527)/2=0.90082号梁：mcq=(0.5992+1.000+0.4084)/2=1.00382.2 汽车荷载冲击系数和纵向折减系数计算2.2.1 汽车荷载冲击系数根据通规4.3.2条的条文说明，简支梁桥的自振频率可用下列公式估算：简支梁结构基频： mc=G/g式中：l结构的计算跨径（m） E结构材料的弹性模量（N/m2）I结构跨中截面的截面惯矩（m4）mc结构跨中处的单位长度质量（kg/m），当换算为重力计算时，其单位应为（Ns2/m2）G结构跨中处延米结构重力（N/m）g重力加速度，g = 9.81m/s2 E = 3.45´1010 N/m2， l = 24.3

48、m，Ic=2´0.3064 +1´0.3074 =0.9202m4，代入公式得到f = 4.6466Hz。按照通规4.3.2条，冲击系数可按下式计算：当1.5Hz£f1£14Hz时，=0.1767ln(f)-0.0157=0.2557。2.2.2 汽车荷载纵向折减系数桥梁计算跨径l=29.3m<150m，故纵向不予折减。3 计算输入与模型本节简述结构的输入情况，具体输入参考第6章附图。3.1 施工阶段划分表 3.1.1 施工顺序表阶段内容持续时间受力截面1张拉钢束1预制截面2存梁30天303存梁60天304梁体吊装（自重乘以0.85）15梁体吊装（

49、自重乘以1.2）06浇注现浇层77现浇层持续受力28组合截面8其余二期恒载209成桥十年3650表3.1.1中时间以天为单位，浇注混凝土，养护7天后张拉预应力，存梁最大不超过60天后吊装，浇注现浇层，现浇层受力28天后进行桥面铺装、防撞栏施工。根据通规第4.1.10条，梁体吊装时应乘以动力系数1.2或0.85，故在第4、第5阶段分别计算。3.2 预应力束及纵向钢筋布置钢束纵向布置图如图3.2.1所示：图3.2.1 结构纵向预应力布置图 普通钢筋布置见图3.2.2所示，中梁底纵向钢筋为11D22，梁顶纵向钢筋为17D12；边梁底纵向钢筋为11D22，梁顶纵向钢筋为20D12。图3.2.2 中梁普

50、通钢筋输入图3.2.3 边梁普通钢筋输入3.3 输入数据表3.3.1 中梁截面几何特性单元号节点号截面抗弯惯距截面面积中性轴高截面高度110.3524611.4940.9221.4520.3524611.4940.9221.45220.3524611.4940.9221.4530.3328461.402030.9421.45330.3328461.402030.9421.4540.3081821.305780.9691.454234220.3081821.305780.9691.455230.3081821.305780.9691.4524240.3081821.305780.9691.45250.3328461.402030.9421.4525250.3328461.402030.9421.45260.3524611.4940.9221.4526260.3524611.4940.9221.45270.3524611.4940.9221.45表3.3.2 边梁截面几何特性单元号节点号截面抗弯惯距截面面积中性轴高截面高度110.3514531.498790.9211.4520.3514531.498790.9211.45220.3514531.498790.9211.4530.3318651.406810.942