7. Tr×nh tù l¾p ®Æt c¸c khèi dÇm
1. Launching and setting the Erection Nose 3. Lifting the segment 8. Application of the epoxy-bonding agent
Ere ction Nos e
Erection Nose Er ection No se
2
0
0
2
0
2
0
2
1 .
5
.
2
5
1 1 .
5
2
300
300
Mobile Scaffold ing Mobile Scaffold ing
Mob ile Scaff olding
4. Setting the movable scaffolding 9. Jointing and stressing of the PC-bars
Er ection No se Ere ction Nos e
2. Lowering the lifting beam and attach to the segment
Cha in b lock for g a de ad jus tm ent
- r
Erection Nose
2
0
2
0
1 .
5
2 2
1 .
5
.
2
5
1
300
Mobil e Scaffol ding Mobile Scaffold ing
Jointing sahll be carried out with final adjustment of segment alignment
5. Positioning segment in longitudinal and tranversal direction
6. Adjusting elvation and longitudinal grade of segment
Mob ile Scaff olding
7. Coupling PC-bars 10. Releaseing the lifting frame
Ere ction Nos e
Er ection No se
Cha in-b loc k for g a de ad jus tm ent
r
0
2
0
0
2
0
2
2
1 .
5
1 .
5
2
Ba rge
300
Mobile Scaffold ing Mobil e Scaffol ding
42
12. Chi tiÕt mèi nèi −ít
B B
A A
477
534
PC Bar C
L
2500 3100 2250 2250 3100 C C 2500
300 1950 300 2100 300 900 900 300 2100 300 1950 300
T e mp o r a r y S u p p o rt
300
1
2
544
270
455
B l oc k C o n cr e t e 300 1200 300 2100 300 900 900 300 2100 300 1200 300
2400 2250 2250 2400
A A
A - A B B
D E F
T e m po r a r y Su p p o r t
Bl o c k Co n c r e t e
PC Bar C
T e m p o ra r y S up p o r t
L
2500 3100 2250 2250 3100 C C 2500
300 1950 300 2100 300 900 900 300 2100 300 1950 300 PC Bar
T e mp o r a r y S u p p o rt
300
270
B l oc k C o n cr e t e 300 1200 300 2100 300 900 900 300 2100 300 1200 300
2400 2250 2250 2400
B - B E - E
W o od e n F or m w o r k f o r B l oc k C o nc r e t e
D E F
Detail of Tem porary Suppo rt C - C B l o c k C o n c r et e
5 0 ～1 8 0 Ｌ 10
Main Span PC B a r
Ｌ =300mm Q=7p cs．
Ｌ =400mm Q=5p cs．
Side Span
Ｌ =300mm Q=5p cs．
Jack Base Ｌ =400mm Q=7p cs．
S t ee l P i p e φ4 2 . 7
S t e e l P l a t e 1 5 0 X 1 50 X 1 0
D - D F - F
Note
- Ty pe o f con cret e fo r th e Blo ck C oncr ete shall be the same as f or t he w et j oint.
- Al l PC Bars sha ll b e co nnect ed a nd t ight ened up b y ha nd b efore cas ting Blo ck Co ncre te.
- Th e te mpora ry s uppo rts shall be remo ved after the Blo ck C oncre te i s pl aced and with the com press ion stre ngth of 1 4MPa .
- De sign ated PC b ars shal l be stre ssed wit h foc e of 200 KN p er ea ch b efor e ca sting con cret e in whol e we t jo int. 47
