Concrete Pre-faricated Box Girder

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BOX GIRDER

Brief Introduction

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.

Features

■ 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.

Concrete Pre-faricated Box Girder

Q: Should not be on the front and back of the four sides of the template? Why is the width of the beam length multiplied by the beam surface? Isn't that the three face?: Only the bottom surface of the beam and two sides of the template, there is no need to shop template.

Q: Known length of 50.8 meters, known to be designed for the width of the area of the loss of 1 x 0.25, I have calculated the base cap,. {1.0 * 0.25 + [0.37 + 1 x 0.1 / 2 + 0.47 * 0.1] on the bottom and bottom formula is multiplied by the divided by two. So how to calculate the foundation beam. Formwork 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: I only see the span is greater than 4M of the beam arch height is 1/1000~3/1000, if that is 5m, 8m, 12M, 16m and even assuming 20m, the supply is only 1/1000~3/1000????: 1, in order to prevent the concrete weight and construction load to other beam and plate template pendulous; if there is no design provisions, the arch height is the length of the cross beam and plate 1/1000~3/1000; (general wood template for 1.5/1000~3/1000; steel template for 1.5/1000~2/1000.)

Q: What kind of frame beam formwork: The frame beam (KL) is a beam which is connected with the frame column (KZ), or both ends are connected with the shear wall, but the span height ratio is not less than 5. In the structural design, there is another point of view for the frame beam, that is, the beam that needs to participate in the earthquake resistance. With the rise of high-rise buildings, the pure frame structure is becoming more and more rare, but the shear wall structure of the frame beam is mainly involved in the seismic beam.

Q: How to calculate the amount of beam template? FiveKL2: cross section size of 0.3*0.6, thickness of the 0.12 beams, 10.9 JingchangAsk: how to calculate the amount of formwork works? How to calculate the height of support?Calculation formula: If it is in the middle, the template area = (0.6-0.12) *2+0.3] squareThe height of support is calculated according to the height of beam bottom

Q: For example, a beam 200*400, length 5000Plate thickness 1005000*5000The area of the template is1, (0.2+0.3*2) *5+5*52, 0.3*2*5+5*5Which is right: Floor 12.24*7.44 is the bottom of the entire plate (including the bottom of the beam), and then subtract the column area. Board only need to calculate the bottom and side die on the line, do not use *2.

Q: More than the number of square cross-section of the beam high formwork: 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. Copy paste..

Q: Seeking beam, plate template engineering quantity: Main girder template (bottom area +2* side area): (2.4*3- wall thickness) * (0.25+ (0.4-0.12) *2) *2--0.25*0.4*2*4 secondary beam area

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: I would like to ask the template support system Liang Xiaoliang Ban Xiaoliang refers to what: Directly subjected to loading template called small beam beam beam emerged called bear small load. The landlord asked the name of small square steel beam, 80 by 80 Fang Mu called Liang Xialiang; 70 by 70 Fang Mu challenge of small beam pipe is under the plate beam. In fact, there is no strict definition.By the way, there is no 48 by the steel pipe of this specification, recommended (suitable for use) is 48.3 x 3.6 Q235 material straight welded steel pipe, the market does not sell.

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