C s thit k v thi cng cng trnh bin c nh

C s thit k v thi cng cng trnh bin c nh

MC LC

Danh mc cc ch vit tt ..................................................................................................................... 7

Li ni u ................................................................................................................................................. 9

Chng 1

KHI QUT V CNG TRNH BIN

1.1 Phn loi cng trnh bin v phm vi mn hc ................................................................ 13 1.1.1 Phn loi cng trnh bin ........................................................................................... 13 1.1.2 Phm vi mn hc .......................................................................................................... 13

1.2 Cu to cng trnh bin c nh thp ................................................................................... 15 1.3 Cu to cng trnh bin c nh b tng ct thp .......................................................... 15 1.4 Cc yu cu i vi thit k v thi cng cng trnh bin c nh ............................. 16

1.4.1 Xem xt v khai thc s dng .................................................................................. 16 1.4.2 Xem xt v mi trng ............................................................................................... 18 1.4.3 Nguyn tc thit k ...................................................................................................... 19 1.4.4 Cc nh ngha ................................................................................................................ 21 1.4.5 H s ti liu ................................................................................................................... 22

Chng 2

CC D LIU CHO TNH TON THIT K CNG TRNH BIN C NH

2.1 Cc yu t mi trng tc ng ln cng trnh bin c nh .................................... 25 2.1.1 Khi qut ........................................................................................................................... 25 2.1.2 Gi.... .................................................................................................................................. 26 2.1.3 Sng.................................................................................................................................... 27 2.1.4 Dng chy ........................................................................................................................ 32 2.1.5 Thy triu.......................................................................................................................... 33 2.1.6 Nhit ............................................................................................................................ 34 2.1.7 H bin .............................................................................................................................. 34 2.1.8 ng t ........................................................................................................................... 34 2.1.9 a hnh v a cht cng trnh ................................................................................ 35

2.2 Ti trng thit k v phng php xc nh .................................................................... 36 2.2.1 Ti trng thit k ........................................................................................................... 36 2.2.2 Xc nh ti trng thit k ......................................................................................... 38 2.2.3 Cc h s v cc t hp ti trng thit k

theo phng php h s ring phn. ................................................................... 67 2.2.4 Cc t hp ti trng thit k theo phng php ng sut cho php ..... 69

C s thit k v thi cng cng trnh bin c nh

2.3 Cc yu cu v vt liu .............................................................................................................. 71

Chng 3

M HNH HO KT CU V TI TRNG,

TNH TON LA CHN PHNG N

3.1 M hnh ho kt cu v ti trng .......................................................................................... 75 3.1.1 M hnh ho kt cu .................................................................................................... 75 3.1.2 M hnh ho ti trng ................................................................................................. 79 3.1.3 M hnh ho kt cu cng trnh bin thp ......................................................... 80 3.1.4 M hnh ho cng trnh bin b tng trng lc............................................... 83

3.2 Tnh ton la chn phng n ............................................................................................... 84 3.2.1 Khi qut ........................................................................................................................... 84 3.2.2 Thit lp v gii bi ton la chn phng n kt cu .................................. 85 3.2.3 Tnh ton kt cu bng phng php PTHH ..................................................... 88 3.2.4 La chn phng n kt cu thp ......................................................................... 95 3.2.5 La chn phng n kt cu b tng ct thp ng sut trc ................. 98

Chng 4

THIT K KT CU CNG TRNH BIN THP

4.1 Cc phng php thit k kt cu thp .......................................................................... 105 4.1.1 Thit k theo phng php h s ring phn ................................................. 105 4.1.2 Thit k theo phng php ng sut cho php ............................................. 106

4.2 Thit k phn t v mi ni ng ......................................................................................... 108 4.2.1 Khi qut ......................................................................................................................... 108 4.2.2 ng sut cho php i vi phn t tr .............................................................. 108 4.2.3 ng sut t hp ca phn t tr .......................................................................... 113 4.2.4 S chuyn tip hnh cn ........................................................................................... 123 4.2.5 Lin kt nt .................................................................................................................... 124 4.2.6 Phn tch mi ................................................................................................................ 128

4.3 Tnh ton mng cc ..................................................................................................................... 131 4.3.1 Cc cho cc cng trnh bin dng khung thp ............................................... 131 4.3.2 Xc nh sc chu ti ca cc chu ti trng dc trc ................................... 132 4.3.3 Phn ng n hi ca cc i vi ti trng dc trc ................................... 137 4.3.4 Phn ng ca cc chu ti trng ngang chu trnh.......................................... 140

4.4 Chng n mn .............................................................................................................................. 147 4.4.1 Khi qut ......................................................................................................................... 147 4.4.2 Sn ph ........................................................................................................................... 147 4.4.3 Bo v ca-tt ................................................................................................................. 148

C s thit k v thi cng cng trnh bin c nh

Chng 5

THIT K CNG TRNH BlN B TNG CT THP

5.1 Cc tham s thit k ca b tng v thp ........................................................................ 149 5.1.1 Cc tham s thit k ca b tng ......................................................................... 149 5.1.2 Cc tham s thit k ca thp ............................................................................... 152

5.2 Phng php thit k cng trnh bin b tng ct thp............................................ 158 5.2.1 Khi qut ......................................................................................................................... 158 5.2.2 Trng thi gii hn cc i ...................................................................................... 159 5.2.3 Trng thi gii hn kh nng lm vic................................................................ 173 5.2.4 Trng thi gii hn mi ............................................................................................ 175 5.2.5 Trng thi gii hn ph hy ly tin .................................................................... 178

5.3 Tnh ton mng cng trnh bin b tng ct thp ....................................................... 185 5.4 Chng n mn cho cng trnh bin b tng ct thp ................................................. 204

Chng 6

THI CNG KT CU CNG TRNH BlN THP

6.1 Ch to kt cu thp trn bi lp rp ................................................................................. 209 6.1.1 t vn ................................................................................................................... ...209 6.1.2 Quy nh chung ........................................................................................................... 210 6.1.3 Thanh tra v kim tra ................................................................................................. 211 6.1.4 Ch to kt cu thp .................................................................................................. 212

6.2 Cc phng php h thu kt cu thp ............................................................................ 214 6.2.1 Khi qut ......................................................................................................................... 214 6.2.2 Cc thao tc nng h ................................................................................................. 216 6.2.3 B tr neo buc kt cu v cc thao tc trng thi ni ............................ 217

6.3 Vn chuyn v dng lp ngoi khi .................................................................................... 217 6.3.1 Quy nh chung ........................................................................................................... 217 6.3.2 Thao tc di chuyn giai on u .................................................................... 218 6.3.3 Vn chuyn trn bin ................................................................................................. 218 6.3.4 Cc thao tc trn bin giai on cui ............................................................. 221

Chng 7

THI CNG CNG TRNH BIN B TNG CT THP

7.1 Ch to kt cu b tng ct thp cng trnh bin trng lc .................................... 228 7.1.1 Vt liu v th nghim vt liu ............................................................................. 228 7.1.2 Cng tc vn khun ................................................................................................... 232 7.1.3 Ct thp v thp cu to .......................................................................................... 233 7.1.4 Trn b tng v va ................................................................................................... 234

C s thit k v thi cng cng trnh bin c nh

7.1.5 Vn chuyn, , m v dng h b tng ..................................................... 234 7.1.6 Hon thnh cc h thng to d ng lc ......................................................... 236 7.1.7 Cng tc hiu chnh, sa cha ............................................................................... 237 7.1.8 Chng n mn .............................................................................................................. 237 7.1.9 H s ti liu hon cng .......................................................................................... 237

7.2 Vn chuyn v nh chm kt cu cng trnh bin trng lc ................................... 238 7.2.1 Quy nh chung ........................................................................................................... 238 7.2.2 Thao tc lm ni .......................................................................................................... 240 7.2.3 Vn chuyn trn bin ................................................................................................. 241 7.2.4 Cc thao tc trn bin giai on cui ............................................................. 241

Ph lc: ............................................................................................................................................ 245 Ph lc A S dng SAP-2000 trong tnh ton thit k cng trnh bin .................. 245 Ph lc B Mt s tnh ton khi thi cng v di chuyn kt cu trn bin .................. 254 Ti liu tham kho .......................................................................................................................... 257