Concrete Pre-faricated Box Girder

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Loading Port:: Tianjin

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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: How to calculate the length of the beam, beam template area: The two cross KL76, distance of each cross axis of the pillar width is Jingchang (beam by beam, high *2+ Liang Kuan)

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: What is a large volume template? How much is the cross section of the beam, belonging to the large volume template?: 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.

Q: Which part of the middle beam and side beam in the T beam template? Thank you: The use of T beam highway bridge generally 5 pieces of beam for the span of 1, which is the outermost of the two to become [edge beam]

Q: More than the number of square cross-section of the beam high formwork: According to the "dangerous method" sub project safety management of the construction quality of [2009]87, the height of more than 5m, the total construction loads greater than 10kN/m2, or the template support system concentrated line load greater than 15kN/m to prepare special construction scheme

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.

Q: What is the formula of beam slab formwork: Si=F*A*B, formula, F coefficient, A, length, B width or height.Such as triangle F=0.5, A for the bottom edge of the length, B is high.

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.

Q: 10-3 degrees of weather, cast in situ floor and girder formwork can be demolished a few days? 25 days enough? There's a wall on the beam.: For the cantilever member of concrete structure engineering, the concrete strength can reach to 100% of the standard value of concrete cube compressive strength.

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