某单层双跨等高钢筋混凝土柱厂房，其平面布置图、排架简图及边柱尺寸如题图所示。该厂房每跨各设有20/5t桥式软钩吊车两台，吊车工作级别为A5级，吊车参数见题表。
提示：1t—10kN
柱吊装验算拟按强度验算的方法进行：吊装方法采用翻身起吊。已知上柱柱底截面由柱自重产生的弯矩标准值Mk=27.2kN·m；as=35mm。假定上柱截面配筋如题10图所示，试问，吊装验算时，上柱柱底截面纵向钢筋的应力σs（N/mm2）应与下列（）项数值最为接近。
A．132
B．172
C．198
D．238
参考答案：C
解析：
根据《混2010》第7.1.4条，
| 阅读理解。 | ||||||||||||
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| 1. 根据短文内容，用简洁的句子或短语完成下列表格。 | ||||||||||||
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| 2. 除了文中提到的建议外，你一定还有许多自己的想法，请写一条与大家分享吧。 _______________________________________________________________________ |