[求助] 关于CBR试验中的单位压力计算问题 [复制链接]

单位压力=压力/面积，具体见公路工程土工试验规程zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

请算算表中的单位压力，谢谢。zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

我下载不了你的附件，你在线不？QQ传给我，113724782zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

单位压力=荷载百分表读数×量力环系数/面积zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
所有单位压力跟我算的有误，而且5mm时的CBR值有两次比2mmCBR值大，按土工试验规程里要求应该重做。zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

表中测力环系数的公式为（10.140*荷载百分表读数）+0.035，所以计算结果是对的，5mm时的CBR值有两次比2mmCBR值大，这也是对的，，本来做一次就行，5mm时的CBR值比2mmCBR值大，所以他又重做了两次，不然他做一次就行啦zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

谢谢niuniu6682000 zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

他这测力环的系数也太大了吧？还有为啥还得加上0.035？zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

看错了，是10.140KN/MM，zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

我这有一组测力环的检定，KN              mm                                               zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
                                                0               1.000zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
                                                5               1.458zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
                                               10             1.920zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
                                               15             2.382zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
                                              20              2.853zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
                                              25              3.331zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡
                                              30              3.812请高手给我算一下测力环系数，预压45N时百分表走几格？还有测力环回归公式。谢谢zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

http://www.kiii.cn/bbs/showtopic-25332.htmlzD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

应力环系数应先把每一个系数算出来即K1=10-5/1.920-1.458以此类推算出K2K3K4K5把几个系数相加再除5既是应力环系数,再换算单位.zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

非常感谢zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡

要知道测力环系数哦  ，土工试验规程里有啊zD©…Î>±¬bbs.3c3t.com~ƒÅ§•Òyãx‡