监理检测网论坛

注册

 

返回列表
发新话题 回复该主题
查看: 2312|回复: 0

[交流] 学习交流两习题 [复制链接]

yzyzz
头像

  • 游客
  • 1700
  • 1904
  • 2010-01-04
1#
t T
发表于 2010-06-21 14:36 |只看楼主
                                                                                            äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
2下列表格中的数据为做CBR试验十所测得的结果，请将所需数据填在表格空白处，并计算CBR2.5和CBR5，P判断该试验是否重做。äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
(已知：量力环校正系数C=200N/0.01mm,贯入杆直径d=50mmäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
荷载测力计百分表读数RäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
单位压力P(KPa)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
百分表读数(0.01mmäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
贯入量LmmäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
0.9äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
(92)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
60.5äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
(0.61)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
1.8äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
(183)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
106.5äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
(1.07)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
2.9äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
（äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
151äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
4.0äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
194äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
4.8äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
240.5äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
5.1äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
286äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
解：根据贯入杆的单位压力计算公式äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
P=C*R/AäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
则P=200X0.9/1963=0.092 äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
MPaäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
0.092X1000=9（KPa）äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
P=200X1.8/1963=0.183 MPaäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
0.183X1000=183 (MPa)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
(其中 A=1/4Πd2äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
=1/4X3.14X502 =1963äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
请问，贯入量是如何计算的？äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
1 某工地地基原状土直剪试验（快剪）结果如下表，试求该地基的强度指标äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
σ (KPa)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
100äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
200äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
300äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
τ( KPa)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
100äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
108äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
115äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
解:äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
（1）直剪试验在直角坐标σ~τ关系图是线性的，表达式是τ =σtgΦ+CäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
(2)作图如下：äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
（3）tgΦ=15%200=0.075äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
Φ=4.3oäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
C=100-100tgΦäÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
C=92.5(KPa)äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
请问我这样做是正确的吗？那么äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
（3）中的tgΦ=15%200中的15和200是怎样确定的？äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
C=100-100tgΦ中的两个100是怎样确定的？äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
äÅä^$/ W~Œbbs.3c3t.com¸ËAG¨äwî]
分享 转发
TOP
上一主题| 下一主题
返回列表
发主话题 回复该主题
高级编辑器高级编辑器