q钢筋混凝土排水管三级管配筋设计图册.doc
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1、many other precious cold water fish. Mineral resources, has proved many of the gold ore body, high grade, large reserves, reserves of more than 170 million tons of lignite, iron, vanadium and titanium magnetite reserves proven 6 million cubic meters, 40 million tons of quartz sand deposit reserves,
2、the rare. ) From the short plate, Woods continued industry weak, support is not strong, especially inadequate for processing, there are no resources to make good products, marketing is not enough, there are no good products sell for a good price. Livelihood weakness, my district is located in the bo
3、rder area, the climate is cold, for many years of the masses of workers have a hard life, and complete the building of forest societys weaknesses are mainly concentrated in the area of peoples livelihood, especially in terms of poverty, the task is still very arduous. From the perspective of short-t
4、erm capital, district financial situation at present tense, some financial debts to repay, is basically living money, no money for development, transformation where did the money come from still outstanding. From the perspective of talent short Board, my talent shortage, low overall quality, irratio
5、nal structure, weak overseas talents into local serious brain-drain, especially high-end talents badly, has become the development of controlKey issues. If these short Board neither avoid nor overcome, not padded, transformation and development cannot be achieved in forest areas. Second, think calml
6、y, calmly. A local economic development, strengths and weaknesses are dynamic and reciprocal transformation, there is no absolute advantages and disadvantages, advantages and disadvantages of nothing, as the time, place, and changes in external conditions, advantages could become disadvantages, disa
7、dvantages may also be to your advantage. For example, my good ecological environment, land development later, is the nations most dare ring of green and organic food, but these years are basically kind of traditional crops such as soybean, wheat, especially the heavy use of chemical fertilizers and
8、pesticides, the ecological advantages of agricultural development are being degraded. For example, ice and snow were our weaknesses, sought after now, with visitors to the snow and ice in the South, but the development of eco-tourism of gold and silver. For example, our region is located in the bord
9、er area, has been our weakness today as the country along the way, and long Jiang Silk Road building farther forward, but is expected to be opened to the Russian frontier. (From XXs situation, while our railways, ports and other projects has not fought for, but with the Mongolia-Russia economic corr
10、idors 65 policy and steady growth benefits of further releases, provide opportunities for our projects, paving projects in the early County, in the Thirteen-Five period will very likely get a specific implementation). Practice has proved that adversity is short or long钢筋混凝土排水管管体结构尺寸与配筋设计图册管截面配筋设计分册级
11、管配筋设计分发号:有限公司二七年七月截面配筋设计说明1. 前言近年来。涉及钢筋混凝土排水管结构计算的规范已经有了新的制定和修编,如:混凝土结构设计规范已修订为现行的GB50010-2002混凝土设计规范,对材料强度、配筋计算做了新的规定。GB50332-2002给水排水工程管道结构设计规范予2003年颁布。CECS143:2002给水排水工程埋地预制混凝土圆形排水管管道结构设计规程中国工程建设标准化协会予2003年颁布。对钢筋混凝土排水管结构计算作出了具体规定。另外,混凝土排水管企业使用的钢材由大量使用冷拔低碳钢丝改为冷轧或热轧帯筋钢筋。采用不同的钢材对计算截面配筋面积结果有很大影响。基于以上
12、,有必要对钢筋混凝土排水管的结构配筋进行重新计算。2. 图册设计依据2.1 GB/T11836-1999混凝土和钢筋混凝土排水管2.2 GB50010-2002混凝土结构设计规范2.3 GB50332-2002给水排水工程管道结构设计规范2.4 CECS143:2002给水排水工程埋地预制圆形管管道结构设计规程2.5 04 S516混凝土排水管道基础及接口3. 编制要点3.1根据现行标准、规范、规程对管体配筋进行计算及图表的编制。3.2钢筋材料一律采用冷轧及热轧带筋钢筋进行计算及图表制作。当采用冷拔低碳钢丝时,图册给出了参考换算系数。3.3增加了直径1400mm 1600mm两个规格;增加了部
13、分管规格常见的管壁厚度。3.4 考虑钢筋骨架滚焊机的钢筋焊接效果,当采用直径10mm钢筋仍不能满足螺距要求时,图册提供了用两根直径10mm钢筋并缠的配筋图表。4. 适用范围4.1本图册供钢筋混凝土排水管生产企业或设计、产品质量监督检验部门参考使用。4.2依据本图册配筋图表生产的钢筋混凝土排水管适用于不同基础形式的开槽施工用管;顶进施工用管配筋设计适用于顶进施工用钢筋混凝土排水管。5. 基本设计规定5.1基本计算条件 见下表管级别管顶覆土厚(m)地面堆积荷载(kN/m)管道基础形式6.010180混凝土3.51090砂(土)弧5.51090砂(土)弧5.2计算原则按承载能力极限状态进行强度计算,
14、静力计算荷载为管自重、竖向有限公司土压力、侧向土压力、管内水重、堆积荷载等。进行强度计算时按CECS143:2002规程确定各分项系数。管断面内层钢筋按受弯构件计算;管断面外层钢筋按大偏心受压构件计算;按正常使用极限状态验算裂缝,允许最大裂缝宽度Wmax0.2mm。5.3材料强度混凝土强度等级取C30,轴心抗压设计强度ft14.3N/mm2;轴心抗拉标准强度ftk=2.01N/mm2。冷轧及热轧带筋钢筋标准强度fyk=550N/mm2,抗拉设计强度fy=360N/mm2。5.4管壁厚100mm的管子可配单层筋,环向钢筋中心位置应在距离管内表面五分之二管壁厚处(2/5t)管壁厚100mm的管子,
15、应配双层钢筋,其内、外环向钢筋净保护层为20mm。对于直径1000mm、管壁厚为100mm的级管经验证明,也可用单层筋。5.5钢筋骨架按滚焊机焊接成型计算。钢筋骨架两端的环向钢筋应 12圈,最大螺距不大于150mm。5.6纵向钢筋直径原则上应与环向环向钢筋一致,但在环向钢筋直径小于5mm时,为保证钢筋骨架的纵向刚度,也取5mm。纵向钢筋根数按GB/T11836-1999标准规定:滚焊机成型的钢筋骨架相邻纵向的间距不得大于400mm,并不得少于6根。本设计采用6、8、12、16、24、32根系列,实际生产中可随滚焊机设置,但必须满足GB/T11836-1999标准中纵向钢筋间距的规定。纵向钢筋两
16、端混凝土净保护层为10mm。6. 图册内容6.管规格除国标规定的直径2003000mm 21个规格外,又增加了1400、1600两规格。 管壁厚级管取最小,推荐及1/10t三种壁厚(直径2400以上含国标、级管规定值);对于小直径管又增加了常见的管壁厚。、级管取国标规定的最小管壁厚;直径2400、2600、2800、3000mm管又增加了1/10t壁厚。6.2图表每个级别、每种规格管分管参数、配筋图表两幅。分别给出了混凝土用量、管重量、配筋面积、钢筋骨架的几何尺寸及钢筋用量。6.3依据04S 516混凝土排水管道基础及接口图册,综合了、级管在混凝土基础、砂(或土)基础时不同支承角度条件下的允许
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