CN219863686U - Grouting-free branch pipe reducing splayed guide port half grouting steel bar connecting sleeve - Google Patents

Abstract

The utility model relates to a non-grouting branch pipe variable-diameter splayed guide port half grouting steel bar connecting sleeve, which is characterized in that a variable-diameter splayed guide port section is added on a traditional grouting sleeve, a grouting branch pipe is canceled, the guide port section is positioned at the end part of the grouting sleeve, is a guide port for inserting embedded steel bars into a grouting anchoring section, and has a larger gap relative to the outer diameter of the steel bars, so that the inclined embedded steel bars can be smoothly inserted into the grouting anchoring section after being led into the guide port section, and the full insertion and the position centering of the steel bars are ensured; the grouting branch pipe is canceled, and the grouting inclined hole leading to the bottom of the member is arranged on the side wall member, so that grouting of the embedded bars and the sleeve can be simultaneously performed, the guide opening section is used as a grouting material inlet channel, and grouting materials with larger capacity can be guided and absorbed to enter the inner cavity of the sleeve grouting anchoring section, thereby being beneficial to the guarantee of grouting quality. The utility model realizes convenient installation of the side wall component and the pre-cast bottom plate, and conveniently guides the side wall component to be in butt joint with the steel bars of the pre-cast bottom plate.

Description

Grouting-free branch pipe reducing splayed guide port half grouting steel bar connecting sleeve

Technical Field

The utility model relates to the technical field of building grouting sleeves, in particular to a grouting-free branch pipe reducing splayed guide port half grouting steel bar connecting sleeve.

Background

The bottom-first and wall-last fabricated trench is formed by performing assembly and installation of prefabricated side wall components on a poured lower concrete bottom plate. In the construction of the assembled canal, when the bottom plate and the side wall components are assembled, the steel bars of the two components are connected by adopting grouting sleeves.

The grouting sleeve is used as a reinforcing steel bar connecting piece, and the side wall component is buried into the grouting sleeve when prefabricated and is connected and fixed with the main reinforcing steel bar in the side wall component. The grouting sleeve is adopted to connect the embedded exposed steel bars in the lower layer pre-cast bottom plate with the steel bars in the upper layer side wall component, the exposed connecting steel bars are embedded in the site pre-cast bottom plate, the embedded exposed steel bars in the pre-cast bottom plate are inserted into the embedded grouting sleeve in the side wall component when the site component is assembled, after the component is installed and positioned, the special cement-based grouting material anchoring steel bars are poured into the grouting sleeve, so that the steel bars are in butt joint connection, and the upper component and the lower component are assembled and connected to form a whole.

The grouting sleeve structure in the prior art comprises a sleeve body of a hollow cylinder structure, and grouting branch pipes which are vertically communicated with the upper end part and the lower end part of the sleeve body. Under the influence of the grouting sleeve of the structure, the following problems are very easy to occur: 1. firstly, exposed embedded bars on a poured bottom plate are manufactured and installed on site, the construction environment conditions are poor, and large human errors exist in the positioning and binding of the bars, so that inaccurate positioning and skew are easily caused; and when concrete is poured, the steel bars of different degrees are displaced due to blanking impact, vibrating impact of the vibrator and stepping by personnel, and deflection phenomenon can occur when the steel bars deviate from the designed center position. The exposed embedded connection bars of the lower layer cast-in-place concrete bottom plate component and the grouting sleeves in the corresponding factory prefabricated side wall components are generally arranged in double rows, the number of each row is relatively large, porous cluster arrangement is formed, and therefore the position deviation and skew of the exposed embedded bars are diversified.

Because the diameter is unanimous about the grout sleeve, the fit clearance of exposed embedded bar external diameter and sleeve body internal diameter is very little, can lead to the embedded bar of lower floor structure and the grout sleeve in the upper member axial centering control difficulty when installation assembly when using current grout sleeve, appears counterpoint inaccurately easily, causes porous cluster centering more difficult, and the root is centering difficult, leads to the embedded bar of lower floor to be difficult to the accurate sleeve of inserting into the grout sleeve of prefabricated member. In short, the exposed embedded bars which are inclined in an offset manner are difficult to insert into the grouting sleeve of the existing structure, inconvenience is brought to installation and construction, the installation progress and the installation quality are affected, even the installation fails, and reworking is performed.

Therefore, how to solve the problems that positioning inaccuracy occurs in porous cluster embedded bars and grouting bar sleeves of assembled channels or prefabricated wallboards and other structures, axial centering control is difficult, and fit clearance between the outer diameter of the bars and the inner diameter of the sleeve is small, so that the porous cluster embedded bars are difficult to accurately penetrate into the grouting sleeve, the deviation bars and the grouting sleeve are smoothly butted, and mounting quality and mounting speed are improved.

Disclosure of Invention

The utility model aims to solve the problems of small fit clearance between embedded bars and grouting sleeves, inaccurate positioning and difficult axial centering control, and provides a grouting-free branch pipe variable-diameter splayed guide port half grouting bar connecting sleeve.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the grouting-free branch pipe reducing splayed guide port semi-grouting reinforcement connecting sleeve comprises a grouting sleeve, wherein the grouting sleeve is used for connecting and fixing a side wall component of an assembled canal and a pre-cast bottom plate to be spliced into a whole;

the grouting sleeve comprises a sleeve body and a slurry outlet pipe, wherein the sleeve body is vertically arranged, and the slurry outlet pipe is horizontally arranged;

the sleeve body comprises a mechanical connection section, a slurry outlet pipe connection cavity section, a grouting anchoring section and a guide opening section with a splayed variable diameter, which are sequentially arranged from top to bottom, and the mechanical connection section, the slurry outlet pipe connection cavity section, the grouting anchoring section and the guide opening section are integrally formed;

the mechanical connecting section is internally provided with internal threads for connecting main reinforcing steel bars in the side wall members, the grout outlet pipe is vertically communicated with the outside of the cavity section, grout flows out from the grout outlet pipe after filling the grouting sleeve, the inner wall of the grouting anchoring section is provided with a shear key, so that the anchoring strength of the grout is enhanced, the lower end of the grouting anchoring section is circumferentially and outwards expanded to be in a reducing splayed shape so as to form the guiding opening section, the exposed embedded reinforcing steel bars deflected on the pre-pouring bottom plate are conveniently guided to be inserted into the grouting sleeve, and meanwhile, the guiding opening section also plays a role of the grouting pipe, namely the grout enters the grouting sleeve through the guiding opening section.

Further, the grouting sleeve is also the sleeve body with the height of 310mm, the sleeve body is vertically arranged, and the sleeve body is of a hollow cylinder structure;

the sleeve body is characterized in that the upper end and the lower end of the sleeve body are respectively provided with a main reinforcing steel bar in the side wall component and an exposed embedded reinforcing steel bar in the pre-cast bottom plate, namely, the end parts of the sleeve body are respectively connected with the main reinforcing steel bar and the exposed embedded reinforcing steel bar, and the diameters of the main reinforcing steel bar and the exposed embedded reinforcing steel bar are 22mm.

Further, the upper end of the sleeve body is in a truncated cone shape and is contracted upwards to form the mechanical connecting section, the height of the mechanical connecting section is 60mm, the inner threads of the mechanical connecting section are connected with the main reinforcing steel bars, and the grouting sleeve and the reinforcing steel bar net in the side wall member are poured into a whole.

Further, a pulp outlet pipe connecting cavity section is arranged above the middle part of the sleeve body, the height of the pulp outlet pipe connecting cavity section is 44mm, the outer diameter of the pulp outlet pipe connecting cavity section is 54mm, and the inner diameter of the pulp outlet pipe connecting cavity section is 32mm;

the outer wall of the pulp outlet pipe connecting cavity section is provided with the pulp outlet pipe, namely the pulp outlet pipe is welded on the pulp outlet pipe connecting cavity section, the pulp outlet pipe is horizontally arranged, the pulp outlet pipe is vertically arranged and communicated with the pulp outlet pipe connecting cavity section, the length of the pulp outlet pipe is 40mm, the outer diameter of the pulp outlet pipe is 25mm, and the inner diameter of the pulp outlet pipe is 17mm.

Further, a grouting anchoring section is arranged below the middle part of the sleeve body, the height of the grouting anchoring section is 183mm, the outer diameter of the grouting anchoring section is 54mm, the inner diameter of the grouting anchoring section is 32mm, and the inner diameter of the grouting anchoring section is the minimum inner diameter of the grouting anchoring section, namely the inner diameter of the shear key;

the exposed embedded bars vertically penetrate through the grouting anchoring section, gaps exist between the exposed embedded bars and the inner wall of the grouting anchoring section, the gap value is 32-22=10mm, mortar is filled in the gaps, and accordingly the exposed embedded bars and the grouting sleeve are tightly anchored together. The exposed embedded bars extend vertically upwards, and the top ends of the exposed embedded bars are lower than the slurry outlet pipe.

Further, the number of the shear keys is multiple, the shear keys are vertically distributed on the inner wall of the grouting anchoring section at intervals, the shear keys are annular bodies and are integrally formed with the grouting anchoring section, the outer diameter of the shear keys is 40mm, the inner diameter of the shear keys is 32mm, and the shear keys are sleeved on the exposed embedded bars.

Further, the lower end of the sleeve body is provided with the guide opening section, which is different from a conventional grouting sleeve structure, the height of the guide opening section is 23mm, the wall thickness of the guide opening section is sequentially increased from the slurry entering direction, the outer diameter of the large diameter end of the guide opening section is 64mm, the inner diameter is 56mm, the outer diameter of the small diameter end is 54mm, and the inner diameter is 32mm;

the exposed embedded bars are inserted into the grouting sleeve from the guide opening sections, so that the connection and installation of the exposed embedded bars and the grouting sleeve are realized;

the gap between the exposed embedded bars and the guide opening section is 32-22=10mm, and the gap between the exposed embedded bars and the small-diameter end of the guide opening section is 56-22=34 mm.

Through the technical scheme, the utility model has the beneficial effects that:

the utility model has reasonable structural design, the structure of the grouting sleeve is optimally designed, the guiding opening section of the grouting sleeve is arranged at the lower end of the grouting sleeve, and the guiding opening section is designed into a variable-diameter splayed shape. The guide opening section is used for guiding the exposed embedded bars of the pre-cast bottom plate to be smoothly inserted into the grouting anchoring section and also plays a role of a grouting inlet, and the guide opening section with the diameter being changed in a splayed shape is used as an inlet of the grouting sleeve to replace the role of the grouting inlet of the grouting branch pipe, so that the grouting branch pipe above the grouting sleeve of the porous cluster is eliminated, and the structure and the installation procedure of the grouting sleeve are simplified.

The guide opening section and the exposed embedded bars have larger gap values, and the larger gap values are more beneficial to guiding the end heads of the exposed embedded bars at the lower layer to be inserted into the guide opening section in the variable-diameter splayed shape, so that the grouting anchoring section is easier than the grouting anchoring section which is directly inserted into the grouting sleeve with smaller gap by using the bars. The guide opening section with the larger diameter at the maximum end can guide the top ends of exposed embedded bars of the porous clusters with the middle or inclined positions into the guide opening section, so that the embedded bars at the lower layer are inserted into the grouting anchoring section. Meanwhile, the guide opening section of the diameter-variable splayed structure with larger diameter can absorb slurry with larger capacity to enter the inner cavity of the grouting anchoring section, so that the grouting quality is guaranteed, the butt-joint anchoring connection of the reinforcing steel bars is realized, the manufacturing cost is reduced, the installation procedure is reduced, and the construction is convenient and the progress is accelerated.

According to the utility model, the inner wall of the guiding opening section is steeper, after the end head of the exposed embedded bar contacts the inner wall, under the action of downward force in the falling process of the side wall component, the exposed embedded bar at the lower layer is easy to pass through and enter the guiding opening section, and then the grouting anchoring section is inserted through friction sliding of the steel bar and the steep inner wall of the guiding opening section, so that the steel bar is completely inserted into the grouting anchoring section and is centered in position, the quality and the progress are ensured, the butt joint connection of the steel bar is realized, and the assembly connection of the two components is realized, so that the whole body is formed.

The utility model eliminates the grouting hole pipe on the grouting sleeve, reserves a grouting inclined hole leading to the bottom plane of the member on the prefabricated side wall member, is used as a special grouting hole, and is connected with the horizontal assembly gap of the seat slurry layer, and the grouting inclined hole on the horizontal assembly gap connecting side wall is simultaneously connected with all the porous cluster embedded bars and the porous cluster grouting sleeve which penetrate through the side wall member. The grouting inclined hole inlet is higher than the grouting sleeve outlet, so that the backflow phenomenon of grouting liquid from the grouting inclined hole inlet can be effectively prevented when grouting is finished. The grout outlet orifice of the grouting inclined hole is positioned at the central position of the bottom plane of the side wall component, thereby being beneficial to the uniform diffusion of grout to the periphery and achieving the uniform grouting purpose of the porous cluster sleeve. And when grouting holes are utilized for grouting, the multi-hole cluster grouting of all the steel bars and the sleeves in the same bin can be performed.

Drawings

Fig. 1 is a top view of an assembled trench without grouting branch pipe reducing splayed guide port half grouting reinforcement bar connecting sleeve.

Fig. 2 is a schematic diagram of a side wall member of a non-grouting branch pipe reducing splayed guide port half grouting reinforcement bar connecting sleeve.

Fig. 3 is a schematic diagram of the connection of main steel bars and grouting sleeves in the side wall member of the grouting-free branch pipe reducing splayed guide port half grouting steel bar connecting sleeve.

Fig. 4 is a schematic view of a grouting sleeve of the non-grouting branch pipe reducing splayed guide port half grouting reinforcement bar connecting sleeve.

Fig. 5 is a schematic diagram showing the assembly of the side wall member of the grouting-free branch pipe reducing splayed guide port semi-grouting steel bar connecting sleeve and the pre-cast bottom plate.

Fig. 6 is a schematic diagram of the connection of grouting sleeve, main steel bar and exposed embedded steel bar of the grouting-free branch pipe reducing splayed guide port semi-grouting steel bar connecting sleeve.

Fig. 7 is a schematic view of mortar on the bottom surface of a side wall member of a grouting-free branch pipe reducing splayed guide port half grouting reinforcement bar connecting sleeve.

Fig. 8 is a schematic diagram showing separation of a side wall member and a pre-cast bottom plate of a grouting-free branch pipe reducing splayed guide port half grouting reinforcement bar connecting sleeve.

The reference numerals in the drawings are: the grouting device comprises a bottom plate 1, a side wall component 2, exposed embedded bars 3, a grouting sleeve 4, a sleeve body 41, a mechanical connecting section 411, a grouting anchoring section 412, a grouting pipe connecting cavity section 413, a grouting pipe 42, a grouting inclined hole 5, a grouting inlet 51, a grouting outlet 52, a horizontal assembly joint 6, main bars 7, a guiding opening section 8 and a shear key 9.

Detailed Description

The following detailed description of specific embodiments of the utility model refers to the accompanying drawings:

as shown in fig. 1-8, the grouting-free branch pipe reducing splayed guide port semi-grouting reinforcement bar connecting sleeve comprises a grouting sleeve 4, wherein the grouting sleeve 4 is applied to the assembly construction of a pre-cast bottom plate 1 and a side wall member 2 of an assembled canal. The pre-cast bottom plate 1 is a reinforced concrete structure formed by casting in a construction site, and a plurality of side wall members 2 are assembled to form side walls of the trench, as shown in fig. 1. Each side wall member 2 is a factory prefabricated reinforced concrete member, and the side wall member 2 adopts a '〡' type straight wall structure, as shown in fig. 2.

When the pre-cast base plate 1 is constructed, a plurality of exposed embedded bars 3 which are distributed in a porous cluster are embedded at the top of the pre-cast base plate 1, as shown in fig. 8. Specifically, the two sides of the reinforcement mesh of the pre-cast base plate 1 are respectively provided with exposed embedded bars 3, each side of the exposed embedded bars 3 is provided with two rows, and the diameter of each exposed embedded bar 3 is 22mm. The pre-cast bottom plate 1 is vertically provided with embedded bars, and the upper parts of the embedded bars extend out of the concrete of the pre-cast bottom plate 1 and are exposed, namely the embedded bars used for being in butt joint with the prefabricated side wall components 2, namely the exposed embedded bars 3.

When the side wall member 2 is prefabricated in a factory, the side wall member 2 is of a reinforced concrete structure, and a plurality of grouting sleeves 4 which are distributed in a porous cluster are embedded in the bottom of the side wall member 2. Specifically, the grouting sleeves 4 at the bottom of each side wall member 2 are arranged in two rows, and the grouting sleeves 4 and the exposed embedded bars 3 are in one-to-one correspondence up and down, as shown in fig. 2.

The grouting sleeve 4 is a connecting piece between the pre-cast base plate 1 and the side wall component 2, and is more detailed, namely a connecting piece for exposing the embedded steel bars 3 and the main steel bars 7 of the steel bar mesh in the side wall component 2, namely a connecting piece for connecting the embedded exposed connecting steel bars in the concrete of the pre-cast base plate 1 and the main steel bars 7 in the prefabricated side wall component 2, wherein the diameter of the main steel bars 7 of the side wall component 2 is 22mm, as shown in fig. 3.

The grouting sleeve 4 is adopted as a connecting end, one end of the grouting sleeve 4 is connected with the main reinforcing steel bar 7 in the prefabricated side wall component 2, the other end is connected with the exposed embedded reinforcing steel bar 3 of the pre-cast bottom plate 1, and the grouting sleeve is anchored and connected by grouting special slurry, so that the butt joint connection of the lower exposed embedded reinforcing steel bar 3 and the main reinforcing steel bar 7 in the upper prefabricated side wall component 2 is realized, the assembly connection of the lower pre-cast bottom plate 1 and the upper prefabricated side wall component 2 is realized, and the whole canal is formed.

Different from the conventional grouting sleeve 4, the grouting sleeve is formed into a new structural form by optimizing design on the basis of a conventional structure: i.e. the guide mouth section 8 of the variable diameter splayed is added, the grouting pipe is eliminated, and the grouting sleeve 4 comprises a sleeve body 41 and a grouting pipe 42, as shown in fig. 4. The grouting sleeve 4 is a sleeve body 41 having a height of 310mm.

The sleeve body 41 is vertically arranged, the sleeve body 41 is of a hollow cylinder structure, the sleeve body 41 is integrally manufactured by adopting 45 # high-quality carbon structural steel round bar materials, and ductile cast iron can be adopted for forging. The upper and lower ends of the sleeve body 41 are respectively connected with the main reinforcing steel bars 7 in the side wall member 2 and the exposed embedded reinforcing steel bars 3 in the pre-cast bottom plate 1, as shown in fig. 6.

The sleeve body 41 comprises a mechanical connection section 411, a grout outlet pipe connection cavity section 413, a grouting anchoring section 412 and a guide opening section 8 with a splayed variable diameter, which are sequentially arranged from top to bottom, and the mechanical connection section 411, the grout outlet pipe connection cavity section 413, the grouting anchoring section 412 and the guide opening section 8 are integrally formed.

Mechanical connection section 411: the upper end of the sleeve body 41 is contracted upwards in a truncated cone shape to form a mechanical connection section 411, and the height of the mechanical connection section 411 is 60mm. The mechanical connection section 411 is internally provided with internal threads, and the mechanical connection section 411 of the grouting sleeve 4 in the side wall member 2 is connected with the main reinforcing steel bar 7 through threads, so that the whole of the main reinforcing steel bar 7 and the grouting sleeve 4 is formed, as shown in fig. 6. And installing the installed grouting sleeve 4 with the main steel bar 7 at the bottom of the side wall component 2 to form a connecting end, and pouring the connecting end into the side wall concrete.

The discharge pipe connects the cavity section 413: above the middle part of the sleeve body 41 is a pulp outlet pipe connecting cavity section 413, the height of the pulp outlet pipe connecting cavity section 413 is 44mm, the outer diameter is 54mm, and the inner diameter is 32mm.

The outer wall of the pulp outlet pipe connecting cavity section 413 is provided with the pulp outlet pipe 42, the pulp outlet pipe 42 is communicated with the pulp outlet pipe connecting cavity section 413, namely, the pulp outlet pipe 42 is vertically arranged and communicated with the pulp outlet pipe connecting cavity section 413, the pulp outlet pipe 42 is horizontally arranged, the pulp outlet pipe 42 is 40mm long, the outer diameter is 25mm, and the inner diameter is 17mm. The grout pipe 42 is made of metal and is welded to the grouting sleeve 4, that is, the grout pipe 42 is welded to the grout pipe connection cavity section 413. The slurry outlet pipe 42 and the sleeve body 41 may be integrally cast together to form a unitary structure.

The grout outlet pipe 42 extends out of the side wall member 2, namely, the end face of the grout outlet pipe 42 is flush with the outer plane of the side wall member 2, so that grouting condition can be observed. Specifically, the slurry outlet pipe 42 of one grouting sleeve 4 extends out of the upstream surface of the side wall member 2, and the slurry outlet pipe 42 of the other grouting sleeve 4 extends out of the downstream surface of the side wall member 2, so that the grouting condition of slurry can be observed conveniently.

Grouting anchor section 412: below the middle part of the sleeve body 41 is a grouting anchoring section 412, the height of the grouting anchoring section 412 is 183mm, the outer diameter is 54mm, and the minimum inner diameter is 32mm. The inner wall of the grouting anchoring section 412 is provided with a plurality of shear keys 9, the shear keys 9 are distributed on the inner wall of the grouting anchoring section 412 at intervals up and down, the shear keys 9 are annular bodies and are integrally formed with the grouting anchoring section 412, the outer diameter of the shear keys 9 is 40mm, and the inner diameter is 32mm.

The exposed embedded steel bars 3 vertically penetrate through the inner cavity of the grouting anchoring section 412, meanwhile, the shear key 9 is sleeved on the exposed embedded steel bars 3, gaps exist between the exposed embedded steel bars 3 and the inner wall of the grouting anchoring section 412, and the gap value is 32-22=10mm, as shown in fig. 6. The exposed embedded bars 3 extend vertically upwards, and the top end positions of the exposed embedded bars 3 are lower than the positions of the grout outlet pipes 42, as shown in fig. 6.

Guide port section 8: the lower end of the sleeve body 41 is a guiding opening section 8, namely, the lower end of the grouting anchoring section 412 is circumferentially and outwards expanded to form a hollow tubular structure with a variable diameter splayed shape so as to form the guiding opening section 8, the guiding opening section 8 extends out of the bottom surface of the side wall member 2, namely, the maximum end surface of the large-diameter end of the guiding opening section 8 is flush with the bottom plane of the side wall member 2. The height of the guide port section 8 is 23mm, the wall thickness of the guide port section 8 increases from the slurry inlet direction in sequence, the outer diameter of the large diameter end of the guide port section 8 is 64mm, the inner diameter is 56mm, the outer diameter of the small diameter end is 54mm, and the inner diameter is 32mm, so that the inner wall of the guide port section 8 is steep, as shown in fig. 6.

The guide opening section 8 is used for guiding the steel bars to be inserted into the grouting sleeve 4, namely the guide opening section 8 guides the exposed embedded steel bars 3 to be inserted into the grouting sleeve 4 on one hand, and on the other hand, the guide opening section 8 also serves as a grouting opening of the grouting sleeve 4 for entering grout. Namely, the exposed embedded bars 3 used for guiding the pre-cast bottom plate 1 are inserted into the grouting anchoring section 412, and meanwhile, the guide opening section 8 with the diameter being changed into the splayed shape also plays a role of a grouting inlet when special cement-based grouting material is poured into the grouting sleeve 4.

The exposed embedded steel bar 3 is inserted into the grouting anchoring section 412 from the guiding opening section 8, a gap exists between the exposed embedded steel bar 3 and the guiding opening section 8, the gap value between the exposed embedded steel bar 3 and the small diameter end of the guiding opening section 8 is 32-22=10 mm, and the gap value between the exposed embedded steel bar 3 and the large diameter end of the guiding opening section 8 is 56-22=34 mm.

The gap value can be determined as follows: the inner diameter of the large-diameter end of the guiding opening section 8 is larger than the outer diameter of the exposed embedded steel bar 3, and the larger gap value is more beneficial to guiding the end of the exposed embedded steel bar 3 below to be inserted into the guiding opening section 8 with the variable-diameter splayed shape, so that the grouting anchoring section 412 is easier than the grouting sleeve 4 with the smaller gap by directly inserting the steel bar. The large diameter end of the guiding opening section 8 can guide the top ends of the porous cluster embedded bars with middle or inclined positions into the guiding opening section 8, so that the embedded bars 3 outside the lower layer can be smoothly inserted into the grouting anchoring section 412.

It should be noted that: 1. the porous clusters refer to the arrangement of the exposed embedded bars 3 or grouting sleeves 4 in the pre-cast bottom plate 1 or the side wall member 2 in double rows, wherein the number of each row is relatively large, so that the porous cluster arrangement is formed. 2. The parameters of the mechanical connection section 411, the grout outlet pipe 42, the grout outlet pipe connection cavity section 413, the grouting anchoring section 412 and the shear key 9 arranged on the inner wall in the grouting sleeve are calculated and designed according to the traditional half grouting sleeve design method, and the design is not in the scope of the application, and only the sleeve is described.

When the side wall member 2 is prefabricated in a factory, a grouting inclined hole 5 leading to the bottom surface of the side wall member 2 is reserved on the side wall member 2 and is used as a special grouting hole, as shown in fig. 2. The uniform grouting of the grouting sleeve 4 can be realized through the grouting inclined holes 5, namely, the multi-hole cluster grouting of all the grouting sleeves 4 under the same side wall member 2 can be performed when the grouting inclined holes 5 are utilized for grouting, so that the grouting inclined holes 5 are communicated with all the grouting sleeves 4 on the side wall member 2.

The grouting inclined holes 5 are distributed at the middle lower part of the side wall member 2, and the grouting inclined holes 5 are obliquely communicated from the upstream surface to the bottom surface of the side wall member 2, so that the grouting inclined holes are obliquely distributed, and the diameter of the grouting inclined holes is 50mm.

Specifically, the two ends of the grouting inclined hole 5 are respectively provided with a grouting inlet 51 and a grouting outlet 52, the grouting inlet 51 extends out of the upstream surface of the side wall member 2, the grouting inlet 51 is positioned at the position 400mm higher than the bottom of the side wall member 2 and is positioned at the position 400mm higher than the position of the grout outlet 42 of the side wall member 4, and when grouting is finished, the backflow phenomenon of grouting liquid from the grouting inlet 51 can be effectively prevented. The grouting outlet 52 extends out of the bottom surface of the side wall member 2 and is communicated with the slurry seat layer, and the grouting outlet 52 is positioned in the center of the bottom surface of the side wall member 2, so that slurry can be uniformly spread to the periphery, and the uniform grouting purpose of the grouting sleeve 4 with porous clusters can be achieved. When grouting is performed by using the grouting inclined holes 5, the porous cluster grouting of all the steel bars and the sleeves of the same bin, namely the same side wall member 2, can be performed.

The seat slurry layer is a horizontal assembly seam gap arranged between the top of the lower layer pre-cast bottom plate 1 and the bottom of the prefabricated side wall component 2, the horizontal assembly seam 7 is connected with the outlet of the grouting inclined hole 5 on the side wall component 2, and simultaneously connected with all the porous cluster exposed embedded bars 3 and the porous cluster grouting sleeves 4 on the through side wall component 2, namely all the porous cluster bars and the grouting sleeves in the same bin. The seat slurry layer is a horizontal assembly seam gap with the width of 15mm, the length of the seat slurry layer is 1985mm, and the depth of the seat slurry layer is 600mm of the thickness of the side wall member 2.

The assembly construction flow of the pre-cast bottom plate 1 and the side wall component 2 is as follows: firstly, after the cast-in-place construction of the pre-cast base plate 1 and the exposed embedded bars 3 is completed, an iron gasket is additionally arranged on the upper surface of the pre-cast base plate 1, and steel gaskets with the thickness of 50mmx and 50mm are adopted to be arranged corresponding to four corners of the side wall member 2, so that preparation is made for subsequent lifting and leveling of the side wall member 2. The steel gaskets at each corner can be laid in multiple layers and welded together according to the plane position, elevation and verticality requirements of the side wall component 2. When the side wall component 2 is located on the gasket, a horizontal assembly seam 6 is formed between the bottom surface of the side wall component 2 and the top surface of the pre-cast bottom plate 1, and the gap between the horizontal assembly seam 6 is 15mm.

Secondly, after the prefabrication of the side wall component 2 is completed, the side wall component 2 is transported to a construction site, and the side wall component 2 is lifted by an automobile crane to keep horizontal and slowly fall close to the precast bottom plate 1. The upper end chamfer of the exposed embedded steel bar 3 and the slope of the inner wall of the guiding opening section 8 are steeper, when the end of the exposed embedded steel bar 3 contacts the inner wall of the guiding opening section 8, under the action of downward force in the falling process of the side wall component 2, the lower exposed embedded steel bar 3 is easy to penetrate into the variable-diameter splayed guiding opening section 8, then the lower exposed embedded steel bar 3 is inserted into the grouting anchoring section 412 of the grouting sleeve 4 through friction sliding of the steel bar and the steep inner wall of the guiding opening section 8, so that the lower exposed embedded steel bar 3 is fully inserted into the grouting anchoring section 412, the full butt joint connection and position centering of the bottom embedded steel bar and the steel bar of the side wall component 2 are realized, the assembly connection of the bottom plate 1 and the two components of the prefabricated side wall is realized, the side wall is integral, and the side wall component 2 is arranged above the steel gasket at the moment, as shown in fig. 5.

And thirdly, performing plugging grouting operation, wherein the plugging is performed by adopting special cement mortar, the plugging range is that the outer side gaps around the horizontal assembly joint 6 between the bottom plane of each side wall member 2 and the pre-cast bottom plate 1 are plugged by using the special cement mortar, the plugging depth is 15mm, the plugging is ensured not to block the guide opening section 8, and meanwhile, the plugging is ensured to be tight, so that the slurry leakage is avoided when the assembly joint is grouted, as shown in fig. 7.

Finally, grouting operation of the grouting sleeve 4 can be performed after the sealing of the gaps around the horizontal assembly joint 6 is completed, grouting is performed by adopting a special grouting device and a low-pressure grouting method, grouting pressure is controlled within 0.10-0.15MP, and lifting displacement of the side wall member 2 is prevented.

The grouting equipment is communicated with the grouting inlet 51 of the grouting inclined hole 5, grout enters the grouting inclined hole 5, and evenly diffuses the grout around the horizontal assembly joint by the grouting outlet 52 positioned at the central position of the bottom plane of the side wall member 2, fills the middle space of the assembly joint, and prevents leakage under the limitation of the mortar for the previous plugging, as shown in fig. 7. Under the pressure of continuous grouting, the grout is pressed into the guide opening sections 8 of the grouting sleeve 4 reaching the porous clusters through the assembly joints, is introduced through the guide opening sections 8 with the variable diameter in the shape of a splayed, continuously rises and fills into the grouting anchoring sections 412, and wraps the exposed embedded bars 3. As the grouting time and pressure continue, the grout continues to rise through the grouting anchor section 412 and flows out through the grout outlet pipe 42 of the grouting sleeve 4, and when the grout flows out of the pipe fully and is stabilized for 7-15 seconds, which indicates that the grouting sleeve 4 is full of grout, the grout outlet pipe 42 can be plugged with a special rubber plug or a wood plug, and the grouting operation of the grouting sleeve 4 is ended.

And (3) grouting the porous clusters of the grouting sleeve 4, checking the slurry outlet condition of the slurry outlet pipe 42 one by one, and plugging the slurry outlet pipe 42 by using a special rubber plug when the slurry outlet pipe 42 is subjected to slurry outlet and pressure stabilization for a certain time, and ending the grouting operation of the grouting sleeve 4 until all the porous clusters of the grouting sleeve 4 are completely grouted, wherein the completion of the porous cluster grouting of the side wall member 2 is indicated, namely the construction of the connection structure between the single side wall member 2 and the pre-cast bottom plate 1 is ended.

It should be noted that: 1. the grouting in the grouting sleeve 4 adopts special high-performance steel bar connecting sleeve grouting materials sold in the market, cement is used as a basic material, and fine aggregate, and a dry mixture consisting of concrete admixture and other materials are matched. The grouting material basic composition of the grouting sleeve 4 generally comprises: the high-strength cement, the graded aggregate, the water reducing agent, the defoamer, the expanding agent and other additives are added to ensure that the cement has the specified performances of fluidity, early strength, high strength, micro expansion and the like after being added with water and stirred. 2. The entire flow path of the slurry in the grouting sleeve 4 is: grout is injected into the grouting inclined holes 5 through grouting equipment, uniformly diffuses all around in the joint after flowing out of the grouting inclined holes 5, gradually fills the whole joint under the limitation of the mortar for plugging, then upwards floods into the grouting sleeve 4 through the guiding opening section 8, and flows out of the grouting pipe 42 after filling the grouting sleeve 4, so that uniform grouting is realized, repeated grouting construction is avoided, and grouting efficiency is improved.

The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present utility model.

Claims (5)

1. The utility model provides a no slip casting branch pipe reducing splayed guiding mouth half grouting reinforcement bar connecting sleeve, includes sleeve body (41) and play thick liquid pipe (42), sleeve body (41) are including mechanical connection section (411), play thick liquid pipe connection cavity section (413) and grout anchor section (412), a serial communication port, sleeve body (41) still including being used for guiding the reinforcing bar to insert and play slip casting entry effect guide mouth section (8), guide mouth section (8) are located sleeve body (41) lower extreme, and guide mouth section (8) are reducing splayed's hollow tubular structure.

2. The grouting-free branch pipe reducing splayed guide port half grouting reinforcement connection sleeve as claimed in claim 1, wherein the sleeve body (41) is provided with the guide port section (8) at the lower end, the grouting anchoring section (412) is expanded to form the guide port section (8) in a reducing splayed shape at the lower end in the circumferential direction, and the guide port section (8) is in a reducing splayed hollow cylinder shape.

3. The grouting-free branch pipe reducing splayed guide port half grouting reinforcement connection sleeve according to claim 2, wherein the height of the guide port section (8) is 23mm, the wall thickness of the guide port section (8) is sequentially increased from the slurry inlet direction, and the inner wall of the guide port section (8) is steep.

4. The grouting-free branch pipe reducing splayed guide port half grouting reinforcement bar connecting sleeve according to claim 2, wherein the outer diameter of the large diameter end of the guide port section (8) is 64mm, and the inner diameter is 56mm; the small-diameter end of the guiding opening section (8) is connected with the grouting anchoring section (412), the outer diameter of the small-diameter end of the guiding opening section (8) and the outer diameter of the grouting anchoring section (412) are both 54mm, and the inner diameter of the small-diameter end of the guiding opening section (8) and the inner diameter of the shear key (9) are both 32mm.

5. The grouting-free branch pipe reducing splayed guide port half grouting reinforcement connection sleeve as claimed in claim 2, wherein the guide port section (8) guides the exposed embedded reinforcement (3) to be inserted into the sleeve body (41), and the slurry is filled into the sleeve body (41) through the guide port section (8);

the diameter of the exposed embedded steel bar (3) is 22mm, the exposed embedded steel bar (3) is inserted into the guide opening section (8), a gap exists between the exposed embedded steel bar (3) and the guide opening section (8), the gap value between the exposed embedded steel bar (3) and one small-diameter end of the guide opening section (8) is 32-22=10 mm, and the gap value between the exposed embedded steel bar (3) and one large-diameter end of the guide opening section (8) is 56-22=34 mm.