阅读说明：本技术 一种装配式建筑外墙防水结构及其施工方法 (Assembly type building outer wall waterproof structure and construction method thereof ) 是由 魏泽科 于 2019-11-06 设计创作，主要内容包括：本发明涉及一种装配式建筑外墙防水结构,包括两个沿竖直方向设置的预制外墙板以及连接在相邻两个预制外墙板之间的现浇楼板；下层的所述预制外墙板上端加工为第一台阶面,所述第一台阶面包括第一水平面、第一竖直面以及第二水平面,所述第二水平面低于所述第一水平面；上层的所述预制外墙板下端加工为第二台阶面,所述第二台阶面包括第三水平面、第二竖直面以及第四水平面；所述第三水平面与所述第一水平面抵接,所述第四水平面高于所述第三水平面且位于所述第二水平面正上方,从而在两个所述预制外墙板之间形成安置腔；所述现浇楼板一边插入安置腔内,且其上侧高于第一水平面。其优点是：防水性能好,不会导致上层预制外墙板发生倾斜。(The invention relates to an assembled building outer wall waterproof structure, which comprises two prefabricated outer wall panels arranged along the vertical direction and a cast-in-place floor slab connected between every two adjacent prefabricated outer wall panels; the upper end of the prefabricated external wall panel on the lower layer is processed into a first step surface, the first step surface comprises a first horizontal surface, a first vertical surface and a second horizontal surface, and the second horizontal surface is lower than the first horizontal surface; the lower end of the prefabricated external wall panel on the upper layer is processed into a second step surface, and the second step surface comprises a third horizontal surface, a second vertical surface and a fourth horizontal surface; the third horizontal plane is abutted with the first horizontal plane, and the fourth horizontal plane is higher than the third horizontal plane and is positioned right above the second horizontal plane, so that a placement cavity is formed between the two prefabricated external wall panels; one side of the cast-in-place floor slab is inserted into the placing cavity, and the upper side of the cast-in-place floor slab is higher than the first horizontal plane. The advantages are that: the waterproof performance is good, can not lead to the prefabricated side fascia of upper strata to take place the slope.)

1. The utility model provides an assembly type structure outer wall waterproof construction, characterized by: the prefabricated external wall comprises two prefabricated external walls (1) arranged along the vertical direction and a cast-in-place floor (2) connected between two adjacent prefabricated external walls (1);

the upper end of the prefabricated external wall panel (1) on the lower layer is processed into a first step surface (11), the first step surface (11) comprises a first horizontal surface (111), a first vertical surface (113) and a second horizontal surface (112), the first horizontal surface (111), the first vertical surface and the second horizontal surface are sequentially formed from one side to the other side of the prefabricated external wall panel (1), and the second horizontal surface (112) is lower than the first horizontal surface (111);

the lower end of the prefabricated external wall panel (1) on the upper layer is processed into a second step surface (12), and the second step surface (12) comprises a third horizontal surface (121), a second vertical surface (123) and a fourth horizontal surface (122) which are sequentially formed from one side to the other side of the prefabricated external wall panel (1); the third horizontal plane (121) is abutted with the first horizontal plane (111), and the fourth horizontal plane (122) is higher than the third horizontal plane (121) and is positioned right above the second horizontal plane (112), so that a placement cavity is formed between the two prefabricated external wall panels (1);

one side of the cast-in-place floor slab (2) is inserted into the placing cavity, and the upper side of the cast-in-place floor slab is higher than the first horizontal plane (111).

2. The waterproof structure for the outer wall of the fabricated building as claimed in claim 1, wherein: grooves (13) are formed in the upper end of the prefabricated external wall panel (1) on the lower layer and on the second horizontal plane (112) close to the first vertical plane (113); and a rib (221) matched with the groove (13) is integrally formed at the lower side of the cast-in-place floor slab (2).

3. The waterproof structure for the outer wall of the fabricated building as claimed in claim 1, wherein: and the lower layer is characterized in that chamfers are formed on one side of the upper end of the prefabricated external wall panel (1) far away from the cast-in-situ floor (2) and one side of the lower end of the prefabricated external wall panel (1) far away from the cast-in-situ floor (2), and a sealant (5) is coated between the two chamfers.

4. The waterproof structure for the outer wall of the fabricated building as claimed in claim 1, wherein: and a chamfer is formed at one side of the lower end of the prefabricated external wall panel (1) at the upper layer close to the cast-in-situ floor slab (2), and waterproof mortar (3) is filled between the chamfer and the cast-in-situ floor slab (2).

5. The waterproof structure for the outer wall of the fabricated building as claimed in claim 1, wherein: the first vertical surface (113) and the second vertical surface (123) are mutually staggered, the second vertical surface (123) is positioned on one side, away from the cast-in-place floor slab (2), of the first vertical surface (113), a cavity is defined among the first horizontal surface (111), the cast-in-place floor slab (2), the fourth horizontal surface (122) and the second vertical surface (123), and plastic foam (4) is filled in the cavity.

6. The waterproof structure for the outer wall of the fabricated building as claimed in claim 1, wherein: the cast-in-place floor slab (2) comprises a prefabricated plate (21) and a cast-in-place plate (22), one side of the prefabricated plate (21) is lapped on the second horizontal plane (112), and the cast-in-place plate (22) is poured in the placement cavity and on the prefabricated plate (21).

7. The waterproof structure for the outer wall of the fabricated building as claimed in claim 6, wherein: and a reinforcing steel bar (23) penetrates between the prefabricated plate (21) and the cast-in-place plate (22).

8. The waterproof structure for the outer wall of the fabricated building as claimed in claim 1, wherein: a positioning ridge (14) is integrally formed on the first horizontal plane (111), and a positioning groove (15) matched with the positioning ridge (14) is formed in the third horizontal plane (121).

9. A construction method of an outer wall waterproof structure of an assembly type building is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: fixing the lower prefabricated external wall panel (1) to the foundation or the lower prefabricated external wall panel (1);

step two: building the prefabricated plate (21) on a bearing beam and/or a bearing column and/or a bearing wall of a building, and building one edge of the prefabricated plate (21) on a second horizontal plane (112);

step three:

3-1: hoisting the upper prefabricated external wall panel (1) to the lower prefabricated external wall panel (1) and fixing the upper prefabricated external wall panel and the lower prefabricated external wall panel with the bearing column;

3-2: filling the cavity with a plastic foam (4);

step four:

4-1: building a forming template of a cast-in-place plate (22);

4-2: pouring a cast-in-place plate (22), vibrating, and solidifying concrete to form a cast-in-place floor slab (2);

step five: and (3) painting sealant (5) between the upper prefabricated external wall panel (1) and the lower prefabricated external wall panel (1), and filling waterproof mortar (3) between the upper prefabricated external wall panel (1) and the cast-in-place floor slab (2).

Technical Field

The invention relates to the field of building outer wall waterproof, in particular to an assembly type building outer wall waterproof structure and a construction method thereof.

Background

The prefabricated concrete structure is a structure formed by standardized production of various structural components including prefabricated shear walls, prefabricated beams, prefabricated columns, prefabricated floor slabs, prefabricated wall slabs and the like in engineering and then installation of the prefabricated components in a construction site through bolt connection, welding connection or cast-in-place connection. The prefabricated components of the prefabricated concrete structure are produced industrially, so that the prefabricated concrete structure has the advantages of saving labor force, being fast in construction progress, being beneficial to realizing building energy conservation, being convenient for industrial production and mechanical construction and the like, and is suitable for the development direction of building industrialization in China.

The joint seam of the current prefabricated wallboard and the beam is a horizontal joint seam, the common waterproof assembly structure is that the beam is cast in place at the upper end of the lower prefabricated wallboard, the upper end of the beam is integrally formed into a reverse sill, flexible waterproof mortar with a certain thickness is paved on the reverse sill to connect the upper prefabricated wallboard and the lower prefabricated wallboard, and the method is difficult to ensure the flatness of the mortar, so that the upper prefabricated wallboard can be inclined to a certain degree.

Disclosure of Invention

One of the purposes of the invention is to provide an assembly type building outer wall waterproof structure, which has the advantages that: the prefabricated external wall panel on the upper layer can not be inclined.

The above object of the present invention is achieved by the following technical solutions: an assembled building outer wall waterproof structure comprises two prefabricated outer wall plates arranged along the vertical direction and a cast-in-place floor slab connected between every two adjacent prefabricated outer wall plates;

the upper end of the prefabricated external wall panel on the lower layer is processed into a first step surface, the first step surface comprises a first horizontal surface, a first vertical surface and a second horizontal surface, the first vertical surface and the second horizontal surface are sequentially formed from one side to the other side of the prefabricated external wall panel, and the second horizontal surface is lower than the first horizontal surface;

the lower end of the prefabricated external wall panel on the upper layer is processed into a second step surface, and the second step surface comprises a third horizontal surface, a second vertical surface and a fourth horizontal surface which are sequentially formed from one side to the other side of the prefabricated external wall panel; the third horizontal plane is abutted with the first horizontal plane, and the fourth horizontal plane is higher than the third horizontal plane and is positioned right above the second horizontal plane, so that a placement cavity is formed between the two prefabricated external wall panels;

one side of the cast-in-place floor slab is inserted into the placing cavity, and the upper side of the cast-in-place floor slab is higher than the first horizontal plane.

Through the technical scheme, under the condition of ensuring the vertical degree of the lower-layer prefabricated external wall panel, the vertical degree of the upper-layer prefabricated external wall panel is ensured after the upper-layer prefabricated external wall panel is placed on the lower-layer prefabricated external wall panel due to the arrangement of the first horizontal plane and the third horizontal plane; in addition, the upper side of the cast-in-place floor is higher than the first horizontal plane, so that an upward bulge is formed at the upper end of the lower prefabricated external wall panel, and the cast-in-place floor is poured in the arrangement cavity after the upper prefabricated external wall is placed on the lower prefabricated external wall panel, so that water is difficult to enter the indoor space from the joint between the two prefabricated external wall panels, and the waterproof performance of the joint of the prefabricated external wall panels is improved.

The invention is further configured to: grooves are formed in the upper end of the prefabricated external wall panel on the lower layer and on the second horizontal plane close to the first vertical plane; and a convex rib matched with the groove is integrally formed on the lower side of the cast-in-place floor slab.

Through above-mentioned technical scheme, increased cast-in-place floor's structural strength on the one hand, on the other hand has also increased the indoor route that passes through of infiltration between prefabricated side fascia of lower floor and the cast-in-place floor, so also improved the waterproof performance of prefabricated side fascia piece department.

The invention is further configured to: and chamfers are formed on one side of the upper end of the prefabricated external wall panel, which is far away from the cast-in-place floor slab, and one side of the lower end of the prefabricated external wall panel, which is far away from the cast-in-place floor slab, and a sealant is coated between the two chamfers.

Through above-mentioned technical scheme, effectively prevent that water from getting into between prefabricated side fascia of upper strata and the prefabricated side fascia of lower floor from outdoor.

The invention is further configured to: and a chamfer is formed at one side of the lower end of the prefabricated external wall panel, which is close to the cast-in-place floor slab, of the upper layer, and waterproof mortar is filled between the chamfer and the cast-in-place floor slab.

By the technical scheme, the waterproof performance of the spliced seam of the prefabricated external wall panel is effectively improved; and the gaps possibly existing between the fourth horizontal plane and the cast-in-place floor slab can be blocked by filling the waterproof mortar.

The invention is further configured to: the first vertical surface and the second vertical surface are mutually staggered, the second vertical surface is positioned on one side, away from the cast-in-place floor slab, of the first vertical surface, a cavity is defined among the first horizontal surface, the cast-in-place floor slab, the fourth horizontal surface and the second vertical surface, and plastic foam is filled in the cavity.

By the technical scheme, the anti-seismic performance of the external wall of the fabricated building can be improved; when an earthquake occurs, the upper prefabricated external wall panel and the lower prefabricated external wall panel can generate relative displacement to a certain degree due to the arrangement of the cavity, and the connection structure between the upper prefabricated external wall panel and the lower prefabricated external wall panel cannot be damaged; the plastic foam can play a waterproof role on one hand, and can prevent concrete from entering the cavity when a cast-in-place floor slab is poured on the other hand.

The invention is further configured to: the cast-in-place floor slab comprises a prefabricated plate and a cast-in-place plate, one side of the prefabricated plate is lapped on the second horizontal plane, and the cast-in-place plate is poured in the placement cavity and on the prefabricated plate.

By the technical scheme, the cast-in-place floor slab has good integrity and continuity, and is favorable for enhancing the seismic performance of buildings; the template is saved during pouring, the construction time is saved, and the upper surface and the lower surface of the molded cast-in-place floor slab are smooth, so that decoration of a decorative surface layer is facilitated.

The invention is further configured to: and reinforcing steel bars penetrate between the prefabricated plate and the cast-in-place plate.

Through the technical scheme, the integrity between the prefabricated plate and the cast-in-place plate is ensured, and the integral structural strength of the cast-in-place floor slab is also ensured.

The invention is further configured to: the first horizontal plane is integrally formed with a positioning edge, and the third horizontal plane is provided with a positioning groove matched with the positioning edge.

Through the technical scheme, during construction, the prefabricated external wall panel on the upper layer can be accurately placed on the prefabricated external wall panel on the lower layer.

The invention also aims to provide a construction method of the assembled building outer wall waterproof structure.

The invention aims to realize the construction method of the waterproof structure of the outer wall of the fabricated building by the following technical scheme, which comprises the following steps:

the method comprises the following steps: fixing the lower prefabricated external wall panel to the foundation or the lower prefabricated external wall panel;

step two: building the prefabricated plate on a bearing beam and/or a bearing column and/or a bearing wall of a building, and building one edge of the prefabricated plate on a second horizontal plane;

step three:

3-1: hoisting the upper prefabricated external wall panel to the lower prefabricated external wall panel and fixing the upper prefabricated external wall panel and the lower prefabricated external wall panel with the bearing column;

3-2: filling the cavity with a plastic foam;

step four:

4-1: building a cast-in-place plate forming template;

4-2: pouring a cast-in-place plate, vibrating, and solidifying concrete to form a cast-in-place floor slab;

by the technical scheme, the assembled building outer wall waterproof structure can be quickly and orderly built; the built and molded assembled building outer wall waterproof structure has excellent waterproof performance; and the formed building outer wall has high verticality.

In conclusion, the beneficial technical effects of the invention are as follows:

1. through the arrangement of the first horizontal plane and the third horizontal plane, the verticality of the upper prefabricated external wall panel is ensured after the upper prefabricated external wall panel is placed on the lower prefabricated external wall panel; in addition, because the upper side of the cast-in-place floor is higher than the first horizontal plane, an upward bulge is formed at the upper end of the lower prefabricated external wall panel, and the cast-in-place floor is poured in the arrangement cavity after the upper prefabricated external wall is placed on the lower prefabricated external wall panel, so that water is difficult to enter the room from the splicing seam between the two prefabricated external wall panels, and the waterproof performance of the splicing seam of the prefabricated external wall panels is improved;

2. grooves are formed in the upper ends of the prefabricated external wall panels and on the second horizontal plane close to the first vertical plane; the convex edge matched with the groove is integrally formed at the lower side of the cast-in-place floor slab, so that the structural strength of the cast-in-place floor slab is increased, the path through which water penetrates into a room from between the lower prefabricated external wall panel and the cast-in-place floor slab is increased, and the waterproof performance of the spliced seam of the prefabricated external wall panels is improved;

3. and a sealant is coated between the first horizontal plane and the third horizontal plane, so that the joint of the first horizontal plane and the third horizontal plane can be subjected to waterproof sealing, and water is prevented from entering between the upper prefabricated external wall panel and the lower prefabricated external wall panel from the outside.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure, 1, prefabricated external wall panels; 11. a first step surface; 111. a first horizontal plane; 112. a second horizontal plane; 113. a first vertical face; 12. a second step surface; 121. a third horizontal plane; 122. a fourth horizontal plane; 123. a second vertical face; 13. a groove; 14. positioning the edge; 15. positioning a groove; 2. casting a floor slab in situ; 21. prefabricating a plate; 22. casting a plate in situ; 221. a rib; 23. reinforcing steel bars; 3. waterproof mortar; 4. plastic foam; 5. and (7) sealing the glue.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.