Advantages of aluminum alloy formwork:
1, light weight, less than 19Kg per square meter.
2. Aluminum alloy building formwork has high strength, high precision and few flat-fell seams on the board.
3. The construction is convenient, and the aluminum alloy building formwork is easy to assemble, which can be assembled manually or hoisted into pieces by machinery.
4, standardized construction, high turnover times, normal use can reach 300 times.
5. Wide application range. Use aluminum alloy building formwork, wall formwork, horizontal floor slab, column, beam and climbing formwork.
6. The surface quality of concrete is flat and smooth, which can achieve the effect of facing or fair-faced concrete.
7, short construction period, 2~3 times faster than the general template construction.
8. The bearing capacity is large, and the aluminum alloy formwork can bear 30KN per square meter.
9. The recycling value is high. Aluminum alloy building formwork has high residual value and obvious cost sharing advantage.
Construction preparation work
Adequate preparation before construction is the premise of ensuring normal construction production and the basis of ensuring construction quality.
1, technical preparation
Shape the stack of small boards, and "B" stands for floor.
In the classification of small wallboard, the letter "W" usually stands for wallboard and "E" stands for beam bottom. The thickness of aluminum alloy is 4-8mm, and the size is set, which is 398mm* 1 198mm in the drawing.
"R" stands for voluntary member. Mainly plays a reinforcing role, similar to the wood grain reinforced steel pipe.
The "C" groove mainly plays the role of bearing and transmission, with various forms and wide applications.
"Load", represented by "T", mainly plays the role of connection and transmission in the keel, and is usually connected with the beam bottom plate with pin iron sheets.
The "nail" that plays a fixing role is similar to a nail and has a wide range of uses. Generally divided into short nails, middle nails and long nails.
The "keel" marked "B" connects small pieces of wood, which is itself a part of the wood.
The "screw" that plays the role of Rachel is often used to fix the wall, and is generally wrapped in PVC pipe.
The "gasket" plays the role of thickening. When the pin and the iron plate lock the structural member and cannot realize the locking function, the gasket can be thickened to realize the locking function.
"Iron sheet" plays the role of locking pin.
"Support" plays the role of transmitting vertical load.
The "meteor hammer" is mainly connected with the supporting column and is mostly used under the keel.
"Tension wire" plays a role in the reinforcement process, which is similar to an accessory with the function of "herringbone buckle".
2, labor preparation
As early as ten years ago, the aluminum formwork project has been used in Hong Kong. Operators don't need too much woodworking operation foundation, and the requirements for workers' experience are not high. They can get started quickly. After on-site guidance, they can basically operate well after setting up two or three floors. Generally, a floor can be divided into several units, and each unit consists of several people. For example, Guangzhou Wenchong Vanke can be divided into six units, and each unit can have five people.
3, the construction site preparation
The site should be neatly stacked, and the wallboard and floor should be separated to facilitate the transportation of materials.
4. Construction equipment
Hammer and hook are the main construction tools to reinforce the pin.
The transport vehicle has the function of transporting materials and transshipment.
process flow
Overall construction process:
Supporting wall formwork → supporting beam next to bottom beam → installing C groove → installing keel → roof assembly → reinforcement → concrete pouring → formwork removal and next cycle.
1, wall column template construction process
2, structural beam shuttering construction process
3, structural plate template construction process
quality standard
1, formwork and its support shall be designed according to the engineering structure, load, foundation soil type, construction equipment and material supply. Formwork and its supports should have sufficient bearing capacity, rigidity and stability, and can reliably bear concrete weight, lateral pressure and construction load.
2. Before pouring concrete, the formwork project shall be accepted.
3. The dismantling sequence and safety measures of the formwork and its supports shall be implemented according to the construction technical scheme.
Note: The order of formwork removal is different from that of general wooden formwork, and the principle of first removal and then removal is adopted. That is to say, first dismantle the formwork, starting from the keel, dismantle the pin, dismantle the formwork, then dismantle the C tank, and then dismantle the column formwork. During the whole process, if there is a support, it cannot be deleted. After the concrete strength is reached, it will be demolished. Generally, there are 4-6 layers of supporting rods, meteor hammers and other components.
4, template joints should not leak slurry; Before pouring concrete, the formwork should be watered and wet, but there can be no water.
5, template in concrete contact surface should be cleaned and brush isolation agent, but shall not be used to affect the structural performance or hinder the decoration engineering construction isolation agent.
6, before pouring concrete, the sundry inside the template should be cleaned up.
7. Inspection method
Allowable deviation and inspection method of formwork installation of cast-in-place structure
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