Brief Introduction of Simple Full-house Scaffolding Construction Scheme

Everyone engaged in the construction industry knows that a project must first have a paper plan, and other plans will not be mentioned. Let's take a look at the construction scheme of mantang scaffolding that many citizens have recently paid attention to. Full-house scaffolding construction scheme is a scheme simulated by the designer according to the building manual. Its design is safe. In terms of construction, it has also been recognized by the leaders of various buildings. In this case, let's take a look at the following detailed scaffolding construction scheme.

I. Overview of the Project

The floor elevation is 15.87m, the ground elevation is+/-0.000, and the floor height is15.87m. The floor here has a total projected area of 350m2 and is a beam floor with a thickness of 180mm. The cross-sectional dimension of the largest girder is 450×3 100mm, and the cross-sectional areas of other girders are all within 0.9m2 The formwork support system of this floor is set up with φ48×3.5 steel pipes, and the main reinforcement arrangement is as follows: CKL (on the K axis). Connect the vertical pole and the horizontal pole with fasteners every 1.2m along the vertical direction of the vertical pole.

Second, the selection and erection requirements

Full-buckled floor-type steel pipes are used for erection, and the erection must have sufficient rigidity and stability to ensure that instability, deformation, inclination and distortion will not occur in various construction operations under the allowable load during construction.

Three, the erection method see the layout.

IV. See the removal process of the outer grid for the removal process.

Five, quality and safety assurance measures in accordance with the external power grid scheme.

Concrete pouring method of intransitive verb: CKL 1 beam is too deep (3. 1m) on the K axis. After discussion with the supervision company, it is decided that CKL 1 beam will be poured twice, the first time to the neutral axis. After the first pouring, before the initial setting of concrete, the concrete surface must be chiseled and inserted into φ 10. Let the new concrete have better contact with the old concrete, and then pour the second concrete three days after the first concrete pouring.

Seven, load calculation

Take the K-axis CKL 1 beam as an example (the cross-sectional area of the beam and other frames is more than 0.7m2 during erection). The self-weight of the current material is 0. 15? KN/m2, reinforced concrete is 25? KN/m2, and the construction load is 4? Qianniu/m2.

1. Template system calculation: (1) material section and performance constant.

(2) Calculation of beam side formwork? Take CKL 1 beam height as the standard, and take the side view. The lateral plate of the beam is 18mm rubber plate, and the vertical gear is 200mm. Double rows of horizontal steel pipes are clamped outside the vertical file, and there are six rows of double rows of horizontal steel pipes on each side. There are 6 pairs of bolts in each row on each side (row spacing is 400mm).

A, vertical wood square beam side vertical fang spacing is every 200mm, vertical wood with 80 x 80 fang wood deflection calculation, the load is triangular, with the maximum value as the design load sharing.

B, beam side horizontal bar (double steel pipe) design and calculation.

Considering the actual situation of the load, the maximum value is uniformly distributed load, and the lateral force (200×500mm) of the beam side plate acts on the vertical gear.

Therefore, the Po per unit area transmitted from the side plate to the vertical rail is the concentrated force P 1 transmitted to the double horizontal steel pipe, and the bending strength of the horizontal bar is calculated as a four-span continuous beam.

C, check the screws.

Its bearing area is 0.4× 0.5 = 0.2m2 ..

The tensile force borne by each bolt is n = 77.5× 0.2 =15.5kn.

In this project, the net cross-sectional area of the opposite bolt with a diameter of φ 14mm is 2.5mm on both sides.

The axial force that the bolt can bear is103.86× 215 = 22332n = 22.33kn >15.5kn, which meets the requirements.

(3) Calculation of beam bottom die

The bottom of the beam is made of 18mm rubber sheet, with three layers of fang wood, with the top fang wood perpendicular to the bottom of the beam at intervals of 250mm, the middle layer at intervals of 200mm within the width of the bottom of the beam, and the bottom layer with 450mm double fang wood.

Because the beam bottom formwork and the side formwork bear the same load (the most unfavorable position), the bottom formwork has more fulcrums than the side formwork, so the beam bottom formwork can be exempted from inspection.

Features:

Mantang scaffolding is mainly used for the decoration of the top of single-storey workshops, exhibition halls, gymnasiums and other buildings with high floors and large bays. It consists of vertical rods, cross rods, diagonal braces and scissors.

After the full-house scaffold is used, the interior wall decoration below 3.6 meters is no longer calculated separately, but the masonry scaffold of the interior wall is still calculated according to the provisions of the interior wall scaffold.

The use of scaffolding depends on its height. If the net height of the shed is below 3.6M on that day, no matter what decoration process is adopted for the ceiling, decorative scaffolding is not counted.

When the ceiling clear height is between 3.6m and 5.2m, the decorative scaffold of the ceiling shall be calculated according to the floor quota of the full-house scaffold. When the ceiling clear height is 5.2M, the ceiling decoration scaffold is calculated according to two quota items: basic layer and adding layer.

For the common cast-in-place concrete beams and slabs, in the actual construction process, the steel pipes and fasteners on the lower side of the formwork are supported by the formwork, not scaffolding. When calculating the number of scaffolding in beam-slab structure, the column and beam components should be distinguished according to the calculation rules, and the corresponding scaffolding quota should be applied.

Full house red scaffold construction scheme design is incisive. Each framework has a very detailed calculation. Every aspect of the requirements is calculated accurately. Therefore, the construction scheme of full-house scaffolding has attracted the attention of many citizens. When a new scheme came out, it reduced many unsafe accidents for the whole project. The construction scheme of mantang scaffold shall be supervised by the construction team. The above problems show that the construction scheme of mantang scaffold is worthy of our approval.