CN207700443U - A horizontal ribbed grouting joint structure of exterior wall panels at the floor of a prefabricated shear wall building - Google Patents

Abstract

A horizontal reinforced grouting joint structure of the exterior wall panels at the floors of an assembled shear wall building, comprising an upper prefabricated wall, a lower prefabricated wall, a prefabricated floor slab, a corrugated pipe and connecting steel bars; the bottom of the upper prefabricated wall and the top of the lower prefabricated wall are both pre-buried with corrugated pipes and grooves; the prefabricated floor slab is arranged between the upper prefabricated wall and the lower prefabricated wall; the end of the prefabricated floor slab is provided with a through-plate hole; both sides of the groove of the upper prefabricated wall are provided with sealing materials; the corrugated pipe in the upper prefabricated wall is provided with a slurry inlet hole and a slurry outlet hole. The new type of structure is constructed by pouring a higher grade of concrete into the reserved groove at the top of the lower prefabricated wall and the embedded corrugated pipe during installation, and then pressurizing the reserved groove at the bottom of the upper prefabricated wall, the through-plate hole of the prefabricated floor slab and the embedded corrugated pipe with cement-based grouting material through the grouting hole, so that the horizontal cold joint changes direction and meets the requirement of preventing water seepage; at the same time, according to the structural calculation requirements, the required shear-resistant connecting steel bars are inserted into the embedded corrugated pipe in the lower prefabricated wall to ensure the shear strength of the shear wall joint without affecting the stress-bearing performance of the shear wall.

Description

A horizontal ribbed grouting joint structure of exterior wall panels at the floor of a prefabricated shear wall building

technical field

The utility model relates to the field of construction, in particular to a horizontal joint structure of outer wall boards at the floor of a multi-layer assembled shear wall building.

Background technique

The State Council issued the "Guiding Opinions on Vigorously Developing Prefabricated Buildings" (Guo Ban Fa {2016} No. 71), deciding to vigorously develop prefabricated buildings and promote the adjustment and upgrading of the construction industry. In accordance with the requirements of promoting supply-side structural reform and new urbanization development, vigorously develop steel structure prefabricated buildings (PS), concrete prefabricated buildings (PC), etc., which have the potential to develop new energy-saving and environmental protection industries, improve building safety levels, and promote the resolution of excess Production capacity, etc. serve multiple purposes. Prefabricated reinforced concrete structure buildings are the mainstream technology in the current market, with standardized design of parts and components, factory production, assembly or mechanized construction; generally after a full set of architectural drawing design and detailed design of structural construction drawings, they are produced in the factory PC components such as precast concrete beams, columns, walls, slabs, and stairs are transported to the site for assembly construction.

At present, the horizontal joints of the external walls of the prefabricated shear walls are all directly grouted, and the horizontal cold joints form water seepage channels due to temperature deformation, and there are many problems such as the inability to guarantee the integrity and watertightness of the external walls.

Contents of the invention

In order to overcome the above problems, the present invention provides a horizontal joint of the outer wall of the assembled shear wall which can prevent the horizontal cold seam of the outer wall, prevent the seepage channel, and ensure the integrity and watertightness of the outer wall.

In order to achieve the above object, the technical solution provided by the present invention is:

A horizontally ribbed grouting joint structure of exterior wall panels at the floor of a prefabricated shear wall building, the end of the prefabricated floor is provided with a plate-through hole; the bottom of the upper prefabricated wall and the top of the lower prefabricated wall are pre-embedded with bellows and grooves; both sides of the grooves of the upper prefabricated wall are provided with sealing materials; the corrugated pipes in the upper prefabricated wall are provided with grout inlet holes and grout outlet holes.

The grout inlet hole is arranged at the bottom of the corrugated pipe in the upper prefabricated wall; the grout outlet hole is arranged at the top of the corrugated pipe in the upper prefabricated wall.

The installation steps of the ribbed grouting joint structure are as follows: after the lower prefabricated wall is hoisted in place, concrete is poured into the groove and the bellows, then the prefabricated floor is hoisted, and then the connecting steel bars are inserted through the plate holes, and finally the upper prefabricated wall is hoisted to make the connection The other end of the steel bar is anchored into the corrugated pipe in the upper prefabricated wall, and then the cement-based grouting material is injected under pressure from the grout inlet hole at the bottom of the corrugated pipe in the upper prefabricated wall until the cement-based grouting material flows out from the grout outlet hole at the top of the corrugated pipe.

The connecting steel bar is inserted into the bellows in the lower prefabricated wall through the hole through the plate; the connecting steel bar is anchored into the pre-embedded bellows at the bottom of the upper prefabricated wall.

The number and spacing of the connecting steel bars are determined according to structural calculations.

The material of the bellows is metal.

The benefits of the above technical solution are:

1. This new model provides a horizontal ribbed grouting joint structure of the outer wall panels at the floor of the prefabricated shear wall building. By reserving grooves on the top and bottom of the outer wall panels, the direction of the horizontal cold joints can be changed to meet the requirement of preventing water seepage At the same time, according to the structural calculation requirements, the required shear connecting steel bars are inserted on the top of the lower wall, and the connecting steel bars are anchored into the corresponding pre-embedded metal bellows at the bottom of the upper wall, and the cement-based grouting material is pressurized to ensure the joint resistance of the shear wall. The shear strength does not affect the mechanical performance of the shear wall.

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

Description of drawings

Fig. 1 is the schematic diagram of the outer wall of the prefabricated shear wall building of the new embodiment 1;

Fig. 2 is the sectional view of the exterior wall of the prefabricated shear wall building of Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the overall structure of the assembled shear wall building exterior wall in Embodiment 1 of the present invention after installation.

Detailed ways

Example 1

As shown in Fig. 1-3, a kind of prefabricated shear wall building floor place exterior wall plate horizontal rib grouting structure, it comprises upper prefabricated wall 1, lower prefabricated wall 2, prefabricated floor slab 3 and connecting steel bar 4; The bottom of the prefabricated wall 1 is pre-embedded with a bellows 5 and a groove 6 is reserved; the top of the lower prefabricated wall is pre-embedded with a bellows 7 and a groove 8 is reserved; the prefabricated floor 3 is arranged on the upper prefabricated wall 1 and Between the lower prefabricated walls 2; the end of the prefabricated floor 3 is provided with plate-through holes 9; the upper prefabricated wall 1 and the prefabricated floor 3 are provided with sealing materials 10 on both sides of the joint; the corrugation in the upper prefabricated wall 1 The tube 5 is provided with a slurry inlet hole 11 and a slurry outlet hole 12 . The grout inlet hole 11 is set at the bottom of the bellows 5 in the upper prefabricated wall 1 ; the grout outlet 12 is set at the top of the bellows 5 in the upper precast wall 1 .

The installation steps of the ribbed grouting joint structure are as follows: after the lower prefabricated wall 2 is hoisted in place, concrete is poured into the reserved groove 8 and bellows 7, then the prefabricated floor slab 3 is hoisted, and then the lower prefabricated wall is passed through the plate hole 9 The corrugated pipe 7 in 2 is inserted into the connecting steel bar 4, and finally the upper prefabricated wall 1 is hoisted so that the other end of the connecting steel bar 4 is anchored into the pre-embedded bellows 5 in the upper prefabricated wall 1, and the sealing material 10 is filled, and then the upper prefabricated wall 1 The grout inlet hole 11 at the bottom of the bellows 5 in the wall 1 is pressurized and poured with cement-based grouting material until the cement-based grouting material flows out from the grout outlet hole 12 at the top of the bellows 5, that is, the cavity at the joint of each component is filled with cement-based grouting material Form entity connection nodes.

In this embodiment, the number and spacing of the connecting steel bars are determined according to structural calculations.

Through this setting, grooves are reserved on the top and bottom of the outer wall panels to change the direction of the horizontal cold joints to meet the requirements of preventing water seepage; Embed metal bellows and pressurize cement-based grouting material to ensure the shear strength of the joints of the shear wall without affecting the mechanical performance of the shear wall.

Claims (5)

1. exterior wall plate level has muscle grouted joint structure at a kind of fabricated shear wall architecture storey, it include upper layer dry wall, Lower layer's dry wall, precast floor slab and connection reinforcing bar；The precast floor slab is set between upper layer dry wall and lower layer's dry wall；It is described Precast floor slab end is equipped with threading hole；It is characterized in that：It is embedded at the top of upper layer dry wall bottom and lower layer's dry wall Bellows and groove；The upper layer precast wall body groove both sides are equipped with joint filling material；Bellows in the upper layer dry wall It is equipped with slurry-feeding hole and slurry outlet.

2. exterior wall plate level has muscle grouted joint structure at a kind of fabricated shear wall architecture storey as described in claim 1, It is characterized in that：The slurry-feeding hole is set to the bottom of bellows in the dry wall of upper layer；The slurry outlet is set in the dry wall of upper layer The top of bellows.

3. exterior wall plate level has muscle grouted joint structure at a kind of fabricated shear wall architecture storey as described in claim 1, It is characterized in that：It is described to have muscle grouting structure mounting steps to set concrete in the groove of lower layer's dry wall；The connection steel One end of muscle is inserted in concrete, and the other end for connecting reinforcing bar is set in the bellows of upper layer precast wall body.

4. exterior wall plate level has muscle grouted joint structure at a kind of fabricated shear wall architecture storey as described in claim 1, It is characterized in that：The connection reinforcing bar is inserted by threading hole in the bellows in lower layer's dry wall；The connection reinforcing bar anchors into In the pre-buried bellows in upper layer dry wall bottom.

5. exterior wall plate level has muscle grouted joint structure at a kind of fabricated shear wall architecture storey as described in claim 1, It is characterized in that：The bellows material is metal.