Assembly Precision Box Girder Formwork

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BOX GIRDER

External formwork of 32/24 meters post-tensioning concrete pre-faricated box girder is divided into sliding mode and
rolling mode; the side form of the first mode can move from one bottom form to the other one which increases the
utilization rate, and decrease the investment for the formwork during construction; the side form of the second mode
is relatively fixed according to the bottom form, and could be dismantled by revolving, which improve the efficiency
of formwork closure.The side formwork unit is mainly 6 meters, the design of the sructure is compact
and reasonable with beautiful and smooth appearance.

■  All the edges of ecternal formwork panels for the box girder have been milled, which ensure

the assembly precision to avoid the leakage of the concrete

■  The bottom formwork unit is 3 meters to facilitate the installation and anti-arch adjustment

■  The bulkhead is designed to envelop the sideform,which can be wholely assembled, making the removal, installation and adjustment much easier.

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Q:Calculate the engineering quantity of the beam template or the engineering quantity of the beam and plate
There is a beam slab template engineering quantity = beam template + plate template; beam template and plate template are calculated according to the beam plate
Q:What is the meaning of the steel beam overhead on the top of the beam formwork
That is, after the formwork is supported, the upper part of the formwork is bound with steel bars (usually on the floor)The reinforcement of the ground beam is the first reinforcement and then the template
Q:How to do the foundation beam template
The main body of each layer of concrete using fixed pump delivery. Before pouring, it is necessary to clear the debris in the template and advance the wet mode, the concrete vibration needs to be timely, coherent, and shall not leak slurry, reinforcement intensive place need to strengthen the vibration, to ensure the concrete density. Concrete vibrator should try to avoid the direct vibration of the template, to prevent the expansion of the joints at the seams, so as to set up the site to inspect the quality of the template.Wall column concrete pouring in place, to prevent the beam, the plate when pouring overflow phenomenon affect the appearance quality, the wall column concrete pouring should be carried out in time for two times to ensure that the structure section size is correct, the founder does not distort deformation.
Q:How to calculate the beam model
Calculating the area of template according to the contact surface
Q:Beam plate with a few face template
The beam of the beam plate is made up of 3 face plates, a bottom die and two side moulds
Q:Why does the formwork support only three faces?
Only the surface and the side surface of the template, when pouring the concrete pouring can together from above.
Q:How to calculate the intersection of rectangular column and beam
Plate and beam plate:(1) the calculation of the area of beam and plate according to the area of beam and plate;(2): high beam plate girders according to the amount of height of sheet thickness calculation;(3) a long beam plate girders: beam to column connection, the length of the beam to column side; girder transfer, beam to beam side.(4) the calculation of the area of the plate and column cap without beam(5) the area of the beam connection is not deducted, and the beam head area is not increased
Q:How to calculate the amount of beam formwork
If the border, the template area = (0.6+0.6-0.12+0.3) *10.9=1.38*10.9=15.042 square
Q:What is the area of the overlap between columns and beams, beams and beams!
It is not deducted from the length to beam or column just didn't count on this side overlap, I figure out part of the coil
Q:What is the demolition order of the construction template
3 the demolition of multilayer floor pillar shall be carried out according to the following requirements: when the upper floor slab is pouring concrete, the next floor slabThe pillar shall not be removed, then the next floor of a live, can only be removed part of the span is 4M or above 4M Xiajun should retain the brace beam, pillar spacing shall not be greater than 3M.

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