?????????(W/C)

1
?????????(????????????)

• ???????????
• ?? ??

2
?????

• ????
• ????
• ????
• ?????
• ????
• ??????

3
????

• ????????????????
• ????????????,?????(??????????1/10??)
  ???????????????(?????????????)???
  ??(????????????)
• ???????????????,????????.

4
?????????????

• ??????
• ?????????(W/C)
• ????
• ??
• ?????
• ???????????(JIS)

5
?????

• ??????????(JIS A 1132)(?????)???2?????????(???,f1
  530cm,f1020cm)
• ???(?,????150mm)gt?????(?,?,??)(?25?)???????

?????????(???),????
6
??????(??????)

• ???????????fc???????W/C??????(??????C/W??????)???
  ??.
• fc?C/W???fcABC/W(??C/W???????????).

7
?????

• ??????????????????.
• ????(????)??????gtgt????
• ??????????????.?????????.

?????????(???),????
????????,?????
8
???????

• ????????????(h/d) ???? ?
• ?????? ?(h/d2.0const)??? ?(?????????,f600mm?????
  ?)
• ???? ???? ?
• ???? ???? ?
• ????????????
• ????????????
• ??????????,???
• ???????!
  ???????????!!

?????????(???), ????
9
??????

• ????????????????(??????? ?)gt???
• ??? ???? ?,AE??????(?????????????????????)
• ?????? ???? ?(???,?????)????????????????

10
?????????

• ??????fck??????????, ????(20?????)????????????
  ??????28?????????.

????????????,
???????????28??????fck ?????????????
?????????(???),????
11
?????????

• f'ck????????????????,????????????????????????????
  ?
• ???????????????????????????????????????(??????m)
  f'cm
• fcmfck????,??50????????.???!????????????fck??
  ??,??????????0???.????!
• ?????????????5???.???????????.
• f'ckf'cm-ksfcm(1-kd)
• ???,k???????????,5???k1.64,s????????,d??????
  ??,ds/fcm
• ???d0.1(10)????,fckfcm(1-1.640.1)0.836fc
  m

12
???????????

• ???????(???N100)?????????????????????????,??????
  ???????
• ???????????
• ??????fck???????????????????????.????????,??????
  ???????????????(????????????)
• ????fcr???????????????????????????????(??????28?
  ????????????fcm).???,??????????????????????5????
  ?????????.

13
????

• ??????????????????????????(???????)
• ????ft0.27vfc,fc30MPa????ft?

?????????(???),????