B??Mcr??Ms??B02??M????1??cr??M?s???????2?B?0B??cr5.48?102142
??126.7??5.48?1014?126.7?????1????14312.991312.992.42?10????????14?2.66?10mm?N2③受弯构件跨中截面处的长期挠度值
Ms?312.99kNm MG?132.89kNm，对C25混凝土，???1.60 使用阶段跨中截面的长期挠度为
?l?548?MsLB2????548?312.99?10?95002.66?101462?1.6?17.6mm
结构自重作用下跨中截面长期挠度值
?l?548?MGLB2????548?132.89?10?95002.66?101462?1.6?8.02mm
按可变荷载频遇值计算长期挠度（?Q）为
?Q??L-?G?17.6-8.02?9.58mm?L600(?9500600?16mm)