② Proportion of single house type ≥ 60%.

Slab, positive composite slab and air conditioning slab include precast slab, precast laminated slab, precast hollow slab, reinforced truss floor support slab, profiled steel plate composite floor slab, cement fiber board composite floor slab and other formwork free floor slabs.

In recent years, in the process of actively exploring and developing precast buildings, China has encountered some problems to be solved in the support and guarantee of top-level design of technical specifications and standards.

3.

Precast wall panels: 1) whole room panel system, including precast concrete external wall panels, assembled large panels, etc.; 2) strip system, including precast concrete exterior wall panels, autoclaved aerated concrete panels, composite sandwich panels, etc; 2.

Proportion of single house type = number of sets of single house type in the project ÷ total number of sets of all house types in the project × 100%。 (2) House type standardization is applicable to residential buildings, dormitories, business apartments and other residential buildings.

It is widely used in high-rise buildings and super high-rise building structures.

(2) Application proportion of standardized components = number of standardized precast components ÷ total number of precast components × 100%, the standardized precast components are precast components that use rolled standard section steel or welded non-special-shaped section steel in the project.

They are not only a major change in the transformation and construction mode of the traditional construction industry, but also an important measure to promote the supply side structural reform, but also a strong support for the construction of new urbanization.

House Type Standardization (2 points) (1) if it meets the following technical requirements ① or ②, 2 points will be obtained: ① the application proportion of standardized house type ≥ 80%.

1.

Single buildings with no more than 3 floors and no more than 500 square meters of aboveground building area can be technically scored according to the building group composed of multiple single buildings.

Stairs include precast concrete stairs, steel stairs and steel-concrete composite stairs.

Precast buildings represent the direction of a new round of scientific and technological revolution and industrial change in the construction industry.

(2) Proportion of steel members in non core simple area = number of steel members in non core simple area ÷ total number of vertical members of non core tube × 100%。 2.

3.

2.

Standardization of components (1 ~ 3 points) (1) 50% ≤ application proportion of standardized components ≤ 80%, and the score is calculated by interpolation method.

Field assembled skeleton: 1) steel keel combined exterior wall system: 2) wood skeleton combined exterior wall system: 3.

(3) Proportion of horizontal members = total projected area of horizontal precast members of each floor ÷ total projected area of each floor × 100%。 (4) The horizontal projected area of vertical main structure, elevator shaft, pipe shaft and portal can not be included in the total horizontal projected area.

1.

(2) When the main building of a single building cannot be divided into standard floors, the whole single building is taken as the calculation unit.

2.

one of the following two methods can be selected for vertical members: ① 30 points for all steel structures.

Basic requirements: 1.

For the technical items with non proportional calculation score, the individual building as a whole shall meet the specific technical requirements of relevant articles before obtaining the corresponding score, and the cumulative score shall not exceed the maximum score of the individual item.

Elephant Foot Ferrule

Steel reinforced concrete structure, also known as steel reinforced concrete structure or rigid reinforced concrete structure, is a structure mainly equipped with section steel and certain longitudinal reinforcement and stirrup in concrete.

4.

Building curtain wall.

(2) 60% ≤ the proportion of horizontal members ≤ 80%, and the score is calculated by interpolation method.

This makes the relevant standards of our country still have a big gap compared with the advanced standards of the international sustainable development of precast building construction mode…

Non standard floors such as overhead floor, structural transfer floor, roof floor, refuge floor and equipment floor should maintain continuity with the modular architectural design of standard floor.

Calculation of the proportion of standardized design, calculation of the proportion of house type standardization and component standardization, taking all single buildings of the same building type implementing precast buildings in the project as the total calculation.

The load-bearing and lateral force resisting systems are all steel structures, and the building roof and enclosure wall can adopt concrete structures that meet the requirements of the rules.

Horizontal components (5-8 points) (1) horizontal components include factory cast steel beams, stairs, slabs, balconies, air conditioning panels and other precast components.

The score of precast buildings shall take the single building (above the outdoor floor) as the basic unit, and shall comply with the following provisions: 1.

The single building shall be confirmed according to the building number of the project planning approval drawing.

② 25 points will be obtained if the core is of concrete structure and cast formwork process is adopted, and the proportion of steel members in non core tube area is ≥ 90%.

Steel-concrete hybrid structure combines the advantages of steel structure and concrete structure, and mainly adopts steel (concrete filled steel tube) frame concrete cylinder.

（2） Main structure works 1 Vertical members (25 ~ 30 points) (1) vertical members include factory made steel columns, steel supports, buckling restraint supports, steel plate shear walls, steel plate composite shear walls, concrete-filled steel tubular columns, etc.

Non residential buildings can be scored as missing items.

When the single building is composed of the main building and podium, the main building and podium can be technically graded according to different single buildings, and the main building shall meet the scoring rules.

Application proportion of standardized house type = total number of units of standardized house type ÷ total number of units of all house types of the project × 100%, and the standardized house type is the house type with no less than 50 sets in the project (including mirror house type).

2.

Proportion calculation of main structure, enclosure wall and internal partition wall: (1) when the main building of a single building can be divided into standard floors, the standard floor is taken as the calculation unit, and the calculation proportion is the arithmetic average of all standard floors.