What are the requirements for the template? What principles should be considered when designing a te

1. Ensure the correct shape and position of each part of the engineering structure and components.

2. It has enough strength, stiffness, stability to withstand the weight and lateral pressure of new concrete and the load in construction.

3. Simple, convenient and in line with process requirements.

4. The seams are tight, and there is no slurry leakage.

Principle: practicality, safety and economy.

Example of a basic template:

1. Ensure the correctness of the shape, size and mutual position of each part of the engineering structure and components.

2. It has sufficient strength, stiffness, and stability, and can reliably withstand the self-weight and lateral pressure of the newly poured concrete and the load generated during the construction process.

3. The structure is simple, the assembly and disassembly are convenient, and it is convenient for the binding and installation of steel bars.

1: Composition. The formwork system is composed of two parts: formwork and support.

1): A formwork is a model that shapes a concrete structure or component. The concrete mixed by the mixer is concrete with a certain fluidity, and after setting and hardening, it can become the required structural component with the specified shape and size, so the concrete needs to be poured in the formwork with the same shape and size as the structural component.

As a tool for forming concrete components, the formwork itself should not only have the same shape and size as the structural components, but also have sufficient strength and rigidity to bear the load of newly poured concrete and the construction load.

2): And anti-support is a support system to ensure the shape, size and spatial position of the template. The support system should not only ensure that the shape, size and spatial position of the template are correct, but also bear all the loads transmitted by the template.

Formwork Support Specification:

1. A special construction plan should be prepared for the formwork project. The special construction plan of the sliding formwork, climbing formwork, flying formwork and other tool-type formwork projects and tall formwork support projects should be technically demonstrated.

2. The template and bracket should be designed. The formwork and support should have sufficient bearing capacity, stiffness and stability, and should be able to reliably withstand all kinds of loads generated during the construction process.

3. The specifications of steel pipes and fasteners used in the erection of formwork supports should meet the requirements of the design Liangzhou; The longitudinal distance of the vertical pole, the horizontal distance of the vertical pole, the step distance of the support and the structural requirements shall meet the requirements of the special construction plan.

Note: The formwork support structure used for concrete cast-in-situ construction in the building is generally assembled into a formwork bracket by steel or wooden beams, and a scaffold frame is built into a bracket support by using steel or wooden poles, and concrete construction is carried out with steel formwork.

There are a variety of different ways to classify templates:

1. According to the shape, it can be divided into two types: plane template and surface template.

2. According to the stress conditions, it is divided into load-bearing and non-load-bearing formwork (that is, bearing the weight of concrete and the lateral pressure of concrete).

3. According to the material, it is divided into wood formwork, steel formwork, steel-wood composite formwork, gravity concrete formwork, reinforced concrete facing formwork, aluminum alloy formwork, trembling plastic formwork, brick formwork, etc.

4. According to the structure and use characteristics, it can be divided into two types: dismantling type and fixed type.

5. According to its special functions, there are sliding templates, vacuum suction cups or vacuum floppy disk templates, thermal insulation templates, steel mold trolleys, etc.

Principle of practicability: the template should ensure that the shape of the components is correct, the weight and mutual position of the slag are correct, and the structure is simple, the support and dismantling are convenient, the surface is smooth, and the joints are tight and do not leak slurry. Security Principles:

It is necessary to have sufficient strength, stiffness and stability to ensure that there is no deformation, no damage and no collapse during construction.

1) Maintain the position size and geometry of the design to be hardened into a reinforced concrete structure.

or the model of the component.

2) Basic requirements for formwork and its support:

1) There is sufficient bearing capacity, stiffness and stability, and the stove can reliably bear the gravity hidden history, lateral pressure and construction load of pouring concrete;

2) Ensure the correctness of the shape, size and mutual position of each part of the engineering structure and components;

3) The structure is simple, the assembly and disassembly are convenient, and it is convenient for the binding and installation of steel bars, the pouring and maintenance of concrete and other process requirements;

4) The joints are tight and must not leak slurry.

3) according to the different types of its structural components, it is divided into basic formwork, column formwork, floor formwork, wall formwork, shell formwork and chimney formwork, etc.; According to its different forms, it is divided into integral template, shaping template, tool template, sliding template, tire mold, etc.

4) The characteristics are:

1) The characteristic of the column is that the cross-sectional size is not large but relatively high.

2) The beam is characterized by a large span and a small width, and the bottom of the beam is generally overhead.

3) The floor slab is characterized by a large area and a relatively thin thickness, and low lateral pressure.

5) Scope of application, formwork support of on-site reinforced concrete components.

The content of the formwork design should include type selection, material selection, load calculation, structural design and drawing of formwork construction drawings. The content and detail of each design can be determined according to the specific slow rise of the project and the construction conditions.

The template design principles are:

1) Practicality. The quality of the concrete structure should be ensured, the joints should be tight, no slurry leakage, and the shape, size and mutual position of the components should be ensured, and the structure should be simple and the support and dismantling should be convenient.

2) Security. Ensure that during the construction process, there will be no deformation, no destruction and no collapse.

3) Economy. According to the specific situation of the engineering structure, according to local conditions, local materials, under the premise of ensuring the construction period, try to minimize the one-time investment, increase the turnover rate of the formwork, reduce the support and demolition labor, and realize civilized construction.

1) Ensure that the shape, size and position of each part of the engineering structure and components are correct.

2) It has sufficient bearing capacity, stiffness and stability, and can reliably withstand the self-weight and lateral pressure of concrete, as well as the construction load.

3) The seams of the formwork should not leak.

4) For fair-faced concrete engineering and decorative concrete engineering, the design effect should be achieved.

Overview. A template is the basic structure and content that a type of entry should contain. For example, a regional entry should include "history (the time when the region was established and the events that occurred, etc.), geography (including climate, mountains, wide rivers, etc.), economy (including industry, import and export**, etc.), population (including population number, major ethnic groups, etc.), culture (including language and characteristic culture, etc.), etc.."

Function. The purpose of the template is to tell the reader which parts of the basic structure of the term should be (which of course is not required). If you find that the structure of an entry is incomplete, you can start by refining those sections. So that there are rules to follow.

Causes of formation. Now we have summarized the following templates: schools, computer viruses, towns, recipes, plants, animals, animation, film and television, ethnicity, dynasties, historical events, Tang poems, Song Ci, idioms.

Special Tips. 1. The template mainly plays the role of guidance, not mandatory use, and the listed fill-in items are not all mandatory. In the process, you can choose to use the template or not, and the content does not have to be within the scope of the preparation template.