Box Girder Steel 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:What is a large volume template? How much is the cross section of the beam, belonging to the large volume template?
The above construction total load of more than 10kN/m2, or concentrated line load greater than 15kN/m template support system that belongs to the template, if you do not consider other loads, considering the single weight, according to concrete 25000KG/m3 calculation, then the beam section area of 0.4m2 belongs to the template, such as 400*1000, 300*1350, 500*800 etc.. Central line loads can be calculated in similar ways.
Q:How to calculate the beam model
According to the calculation of the expansion area, the height of support according to the bottom elevation
Q:I would like to ask the three sides of the template is calculated on the surface of which is the three?
Beam template is to calculate three sides, is the beam of the two sides with the bottom of the beam
Q:How to do the foundation beam template
The main construction method by a formwork one-time-concreting organization construction, wall, column and beam plates without construction joints, each layer of wall, column, beam plate model, a branch of Qi, while pouring concrete.
Q:How to calculate the foundation beam, template, and cushion.
. Calculate the volume of the cushion should be very good, where the beam on the cushion ah, as to how the layout drawings will be.
Q:What is the meaning of the steel beam overhead on the top of the beam formwork
Because the carpenter is generally the template will be good, so that there is no reinforcement steel reinforcement
Q:How to calculate the intersection of rectangular column and beam
Beam:(1): the length of beam to column connection, the length of the beam to column side; girder transfer, beam to beam side. The beam length at the door (window) wide hole net length calculation. According to the center line, wall beam wall is calculated according to the net line.(2) the area of the beam connecting part is not deducted, and the area of the beam head is not increased(3) the area of the beam pad is incorporated into the beam
Q:What is the wire mesh in front of the foundation beam
Wood can be used, but the surface is relatively smooth, after pouring, the bond will be worse; in this way, the construction is more convenient, leaving the rough concrete surface.
Q:More than the number of square cross-section of the beam high formwork
For the height of more than 8m, the total load is greater than 15kN/m2, or the central line load greater than 20kN/m of the template support system needs to organize expert demonstration".
Q:Calculate the beam template when you want to reduce the thickness of the plate
Now the general calculation of the template area is to contact the concrete surface is positive, of course, the thickness of the template to be deducted.

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