CN105904577A - Prefabricated part applicable to complicated beam structure - Google Patents

Abstract

The invention discloses a prefabricated part applicable to a complicated beam structure. The prefabricated part comprises a plate frame and two templates, wherein the two templates face each other directly; and clearance used for template lamping is formed between the two templates. The prefabricated part also comprises push plate assemblies which are corresponding to the different templates respectively, wherein the push plate assembly of each template is used to push the template to move towards one side of the other template; the push plate assembly comprises a compression bolt, a spring and a check bolt, the compression bolt is in a threaded connection with the plate frame, and the compression bolt is contacted with the outer side face of the corresponding template; and the check bolt is in a threaded connection to the plate frame, the axis of the check bolt is parallel with the axis of the corresponding compression bolt, and the spring is disposed between the corresponding template and the corresponding check bolt. The prefabricated part also comprises a prefabricated table and a sealing strip. The device is applicable to prefabricated part manufacture of the beam structure with a complicated shape and has the advantage that technical effects of reducing a pulp leakage amount or avoiding pulp leakage can be reached during solidification of the prefabricated part.

Description

A prefabricated element for complex beam structures

technical field

The invention relates to the field of concrete component prefabrication equipment, in particular to a prefabricated component which can be used for complex beam structures.

Background technique

In order to make up for the phenomenon of premature cracks in concrete, before the component is used (loaded), the concrete is pre-stressed, that is, in the tensile area of the concrete, the steel bar is stretched by artificial force, and the steel bar is used. Retraction force pre-stresses the concrete tension zone. This stored preloaded pressure, when the member bears the tensile force generated by the external load, first offsets the preloaded pressure in the concrete in the tension area, and then the concrete is stretched as the load increases, which limits the elongation of the concrete. Delay or not make cracks appear, this form of concrete is prestressed concrete. Because prestressed concrete has the advantages of good crack resistance, high rigidity, low self-weight, and can reduce the vertical shear force and main tensile stress of concrete beams, it can significantly improve the stability and fatigue resistance of compression members. It has excellent application value in building construction.

The process of prestressed concrete pouring involves the prevention of grout leakage during concrete pouring, but the effect of many anti-leakage grout technologies has failed to achieve the expected effect, which directly affects the construction efficiency and the quality of concrete pouring. Nowadays, steel plates are generally used to directly contact and compress the steel plates, adding anti-slurry strips, etc., to prevent the leakage of concrete grout, but this method not only adds a certain degree of difficulty to the construction, but also fails to achieve the ideal anti-leakage effect.

Contents of the invention

The above-mentioned prestressed concrete pouring process involves the prevention of grout leakage during concrete pouring, and the effects of many anti-leakage grout technologies have failed to achieve the expected results, resulting in problems that directly affect the construction efficiency and the quality of concrete pouring. The present invention provides a prefabricated element that can be used in complex beam structures.

In order to solve the above problems, the present invention provides a prefabricated component that can be used in complex beam structures through the following technical points to solve the problem: a prefabricated component that can be used in complex beam structures, including a plate frame and two templates, and the two templates are positive For the relationship, there is a gap between the two templates for clamping the template, and there are push plate assemblies corresponding to different templates respectively, and the push pedal assemblies of each template are used to push the template to move to the side of the other template;

The push plate assembly includes a hold-down bolt, a spring and a lock bolt, the hold-down bolt is threadedly connected to the plate frame, and the hold-down bolt is in contact with the outer surface of the corresponding template;

The anti-loosening bolts are threaded on the plate frame, and the axis of the anti-loosening bolts is parallel to the axis of the corresponding compression bolts. The spring is arranged between the corresponding template and the corresponding anti-loosening bolts. In the working state, the two springs The two ends are in an elastic compression state by the compressive stress of the corresponding formwork and the corresponding anti-loosening bolts; it also includes the prefabricated table under the two formworks, the two formworks are placed on the prefabricated table, and a There are sealing strips.

Specifically, the above two templates and the prefabricated platform form a concrete mortar cavity. In this way, concrete mortar is filled into the above cavity, and the required concrete prefabricated components are obtained after the concrete mortar is solidified. In the prior art, in order to reduce the shrinkage of the concrete mortar during the solidification process, an expansion agent is generally added to the concrete mortar. However, in general, the concrete mortar still shrinks slightly. For prestressed concrete, the above shrinkage is the result of pouring. An important cause of slurry leakage.

In this case, when the mold is closed, the distance between the two templates is adjusted to obtain the design cavity width: by turning the compression bolt, the end of the compression bolt acts on the outside of the corresponding template, changing the width of the two templates. The width of the gap between them. After filling the above gap with concrete mortar, the springs in the two push plate assemblies can be elastically deformed in a compressed state by turning the anti-loosening bolts in the two push plate assemblies. The above elastic deformation is corresponding to The template generates a thrust pointing to another template, so that during the curing of the concrete mortar, if the concrete mortar shrinks, the elastic force generated by the elastic deformation of the above spring forces the template and the concrete mortar, the concrete mortar and the sealing strip, and the sealing strip and The templates are tightly fitted to achieve the technical effect of reducing the amount of slurry leakage or avoiding slurry leakage.

The above technical scheme provides a set of concrete beam structure prefabrication device, which can quickly complete the closing, opening and applying prestress to the formwork after closing the mold. The above prestress can be used to prevent grout leakage or reduce curing during the curing process of concrete mortar The amount of grout leakage in the process is beneficial to ensure the quality of concrete prefabricated parts.

In this case, the formwork on both sides of the prefabricated formwork is equipped with compression bolts, springs and anti-loosening bolts. After the concrete mortar shrinks, under the elastic force of the spring, the formwork on both sides of the prefabricated part fits with the corresponding formwork. When the clamp is used, the position change or angle change of each template is less affected by the position change or angle change of another template, so that the fixture can be applied to the manufacture of beam structure prefabricated parts with complex shapes.

In the application of this case, after adjusting the distance between the two formworks, before filling the concrete mortar, a spacer bar with both ends in contact with the inner sides of the two forms can be added between the two formworks. The spacer bar is preferably located in the gap. The upper end, and then compress the spring through the anti-loosening bolt. After filling the concrete mortar, when the concrete mortar is solidified to a certain degree, that is, when the concrete mortar has a certain strength, the spacer bar is removed to avoid the impact of the elastic force of the spring on the size of the cavity between the two formworks.

A further technical solution is:

As an easy-to-implement solution, the plate frame is U-shaped, and the two templates are respectively located on the inner sides of the open ends of the plate frame. In the above structure, it can be screwed to one side of the plate frame through the anti-loosening bolt and the compression bolt at the same time, which is used to complete the compression of the spring and the adjustment of the position of the template.

Since the shrinkage of the concrete mortar is smaller than the width of the gap between the two templates, in order to facilitate the anti-leakage effect, it is preferable to choose a spring with a large elastic coefficient, and the springs are all superimposed by multiple disc springs. spring set.

In order to avoid excessive skewing of the formwork under the elastic stress of the spring and affect the bonding quality of the formwork and the corresponding formwork, each push plate assembly has a spring and a hold-down bolt, and the axis of the spring in each push plate assembly is aligned with the The axes of the pressing bolts in the push plate assembly are collinear, and each push plate assembly also includes an anti-loosening plate that fits in clearance with the pressing bolts in the push plate assembly, and the anti-loosening plate is arranged on the spring in the push plate assembly and Between the anti-loosening bolts, the anti-loosening plate is used for stress transmission between the spring in the push plate assembly and the anti-loosening bolts, there are more than one anti-loosening bolts, and different anti-loosening bolts are arranged in the push plate assembly Compress the different sides of the bolt.

In order to avoid excessive skewing of the formwork under the elastic stress of the spring and affect the bonding quality of the formwork and the corresponding formwork, there are multiple springs in each push plate assembly, and the number of compression bolts in each push plate assembly is one. The plurality of springs in each push plate assembly are evenly distributed in a ring shape relative to the axis of the compression bolt, and each push plate assembly also includes an anti-loosening plate that cooperates with the compression bolt in a gap, and the anti-loosening plate is arranged between the spring and the anti-loosening plate. Between the bolts, the anti-loosening plate is used for stress transmission between the spring and the anti-loosening bolts, there are more than one anti-loosening bolts, and different anti-loosening bolts are arranged on different sides of the compression bolts.

In order to facilitate the rotation of the compression bolts and the anti-loosening bolts, the compression bolts and the anti-loosening bolts are provided with rotating handles for braking their respective rotations.

As the specific setting form of the sealing strip on the device: the upper surface of the prefabricated platform is provided with two grooves whose length direction is parallel to the length direction of the formwork, the cross section of the groove is semicircular, and the two sealing strips The cross-sections are all circular, and the diameter of the sealing strip is equal to the diameter of the groove surface of the groove, and the two sealing strips are respectively clamped in different grooves;

Inner corners of the bottom surface of the template are provided with notches with arc-shaped surfaces, and the surface of the sealing strip is attached to the surface of the notches.

In the setting form of the above sealing strip, it is convenient to deform the sealing strip under the extrusion of the gravity of the concrete slurry when the cavity is grouted, and further increase the compressive stress between it and the surface of the groove and notch to achieve a good seal. Sealing effect. Furthermore, during the solidification process of the concrete mortar, the two formworks may have relative movement relative to the prefabricated table. The above sealing strip setting method can further squeeze and deform the sealing strip height direction during the movement of the formwork. Therefore, this In this case, the sealing strip can still maintain a good sealing effect.

As an optimal solution to facilitate demoulding and increase the stability of the sealing strip, the cross-section of the notch is a quarter circle.

The present invention has the following beneficial effects:

In this case, when the mold is closed, the distance between the two templates is adjusted to obtain the design cavity width: by turning the compression bolt, the end of the compression bolt acts on the outside of the corresponding template, changing the width of the two templates. The width of the gap between them. After filling the above gap with concrete mortar, the springs in the two push plate assemblies can be elastically deformed in a compressed state by turning the anti-loosening bolts in the two push plate assemblies. The above elastic deformation is corresponding to The template generates a thrust pointing to another template, so that during the curing of the concrete mortar, if the concrete mortar shrinks, the elastic force generated by the elastic deformation of the above spring forces the template and the concrete mortar, the concrete mortar and the sealing strip, and the sealing strip and The templates are tightly fitted to achieve the technical effect of reducing the amount of slurry leakage or avoiding slurry leakage.

The above technical scheme provides a set of concrete beam structure prefabrication device, which can quickly complete the closing, opening and applying prestress to the formwork after closing the mold. The above prestress can be used to prevent grout leakage or reduce curing during the curing process of concrete mortar The amount of grout leakage in the process is beneficial to ensure the quality of concrete prefabricated parts.

In the above technical scheme, the formwork on both sides of the prefabricated formwork is equipped with compression bolts, springs and anti-loosening bolts. After the concrete mortar shrinks, under the elastic force of the spring, the formwork on both sides of the prefabricated part and the corresponding formwork When laminating, the position change or angle change of each formwork is less affected by the position change or angle change of another formwork, so that this fixture can be applied to the manufacture of beam structure prefabricated parts with complex shapes.

Description of drawings

Fig. 1 is a structural schematic diagram of a specific embodiment of a prefabricated component that can be used in complex beam structures according to the present invention.

The marks in the figure are: 1. Rotary handle, 2. Template, 3. Plate frame, 4. Anti-loosening bolt, 5. Anti-loosening plate, 6. Compression bolt, 7. Spring, 8. Sealing strip, 9. Prefabrication tower.

detailed description

The present invention provides a prefabricated component that can be used in complex beam structures, and is used to solve the problem that the prestressed concrete pouring process in the prior art involves the prevention of grout leakage during concrete pouring, and the effects of many grout prevention technologies All failed to achieve the desired effect, resulting in problems that directly affect the construction efficiency and the quality of concrete pouring. Below in conjunction with embodiment the present invention is described in further detail, but the present invention is not limited to following embodiment:

Example 1:

As shown in Figure 1, a prefabricated component that can be used for complex beam structures includes a frame 3 and two formworks 2, the two formworks 2 are in a positive relationship, and there is a gap between the two formworks 2 for clamping the formwork 2 , also including push plate assemblies corresponding to different templates 2, the push plate assemblies of each template 2 are used to push the template 2 to move to the other template 2 side;

The push plate assembly includes a hold-down bolt 6, a spring 7 and an anti-loosening bolt 4, the hold-down bolt 6 is threadedly connected to the plate frame 3, and the hold-down bolt 6 is in contact with the outer surface of the corresponding template 2;

The anti-loosening bolt 4 is threadedly connected to the plate frame 3, and the axis of the anti-loosening bolt 4 is parallel to the axis of the corresponding compression bolt 6, and the spring 7 is arranged between the corresponding template 2 and the corresponding anti-loosening bolt 4 , in the working state, the two ends of the spring 7 are in an elastically compressed state by the compressive stress of the corresponding template 2 and the corresponding anti-loosening bolt 4; it also includes a prefabricated table 9 located under the two templates 2, and the two templates 2 are placed on the prefabricated On the platform 9, a sealing strip 8 is provided between the two templates 2 and the prefabricated platform 9.

Specifically, the above two templates 2 and the prefabricated table 9 form a concrete mortar cavity, so that the above cavity is filled with concrete mortar, and the required concrete prefabricated components are obtained after the concrete mortar is solidified. In the prior art, in order to reduce the shrinkage of the concrete mortar during the solidification process, an expansion agent is generally added to the concrete mortar. However, in general, the concrete mortar still shrinks slightly. For prestressed concrete, the above shrinkage is the result of pouring. An important cause of slurry leakage.

In this case, when the mold is closed, the distance between the two templates 2 is adjusted to obtain the design cavity width: by rotating the compression bolt 6, the end of the compression bolt 6 acts on the outside of the corresponding template 2, Change the width of the gap between the two templates 2. After filling the above gap with concrete mortar, you can turn the anti-loosening bolt 4 in the two push plate assemblies to make the springs 7 in the two push plate assemblies produce elastic springs in a compressed state. Deformation, the above elastic deformation generates a thrust pointing to another template 2 for the corresponding template 2, so that during the curing process of the concrete mortar, if the concrete mortar shrinks, the elastic force generated by the elastic deformation of the above spring 7 forces the template 2 to contact the concrete mortar 1. The concrete mortar and the sealing strip 8, and the sealing strip 8 and the formwork 2 are tightly fitted to achieve the technical effect of reducing the amount of grout leakage or avoiding grout leakage.

The above technical scheme provides a set of concrete beam structure prefabrication device, which can quickly complete the closing, opening and applying prestress to the formwork 2 after closing the mold. The above prestress can be used to prevent the leakage of the concrete mortar or reduce the The amount of slurry leakage during the curing process is conducive to ensuring the quality of concrete prefabricated parts.

In this case, the formwork 2 on both sides of the prefabricated formwork 2 is equipped with a structure of compression bolts 6, springs 7 and anti-loosening bolts 4. After the concrete mortar contracts, under the elastic force of the spring 7, When the formwork 2 is attached to the corresponding formwork 2, the position change or angle change of each formwork 2 is less affected by the position change or angle change of the other formwork 2. In this way, this fixture can be applied to the manufacture of beam structure prefabricated parts with complex shapes.

When this case is in use, after adjusting the distance between the two formworks 2 and before filling the concrete mortar, a spacer bar with both ends in contact with the inner sides of the two forms 2 can be added between the two formworks 2, preferably the spacer bar Located at the upper end of the gap, the spring 7 is compressed by the anti-loosening bolt 4. After filling the concrete mortar, when the concrete mortar is solidified to a certain degree, that is, when the concrete mortar has a certain strength, the distance bar is removed to avoid the elastic force of the spring 7 from affecting the size of the cavity between the two formworks 2 .

Example 2:

The present embodiment is further limited on the basis of embodiment 1, as shown in Figure 1, the further technical solution is:

As an easy-to-implement solution, the panel frame 3 is U-shaped, and the two templates 2 are respectively located on the inner side of different sides of the opening end of the panel frame 3 . In the above structure, the anti-loosening bolt 4 and the compression bolt 6 can be screwed to one side of the plate frame 3 at the same time, so as to complete the compression of the spring 7 and the adjustment of the position of the template 2 .

Since the shrinkage of the concrete mortar is smaller than the width of the gap between the two templates 2, in order to facilitate the anti-leakage effect, it is preferable to select a spring with a larger elastic coefficient, and the spring 7 is formed by stacking a plurality of disc springs. The formed spring group.

In order to prevent the formwork 2 from being too skewed under the elastic stress of the spring 7 and affect the bonding quality of the formwork 2 and the corresponding formwork 2, each push plate assembly has one spring 7 and a compression bolt 6, and each push plate The axis of the spring 7 in the assembly is collinear with the axis of the hold-down bolt 6 in the push plate assembly, and each push plate assembly also includes an anti-loosening plate 5 that is clearance-fitted with the hold-down bolt 6 in the push plate assembly, and the anti-loosening plate 5 is arranged between the spring 7 in the push plate assembly and the anti-loosening bolt 4, and the anti-loosening plate 5 is used for stress transmission between the spring 7 and the anti-loosening bolt 4 in the push plate assembly, and the anti-loosening bolt 4 more than one, and different anti-loosening bolts 4 are arranged on different sides of the pressing bolt 6 in the push plate assembly.

Example 3:

This embodiment further limits the present invention on the basis of Embodiment 1. As shown in FIG. 1 , in order to avoid excessive skewing of the template 2 under the elastic stress of the spring 7 and affect the bonding quality of the template 2 and the corresponding template 2, There are many springs 7 in each push plate assembly, and the number of hold-down bolts 6 in each push plate assembly is one, and the multiple springs 7 in each push plate assembly are ring-shaped and evenly Cloth, each push plate assembly also includes an anti-loosening plate 5 that fits in a gap with the compression bolt 6, and the anti-loosening plate 5 is arranged between the spring 7 and the anti-loosening bolt 4, and the anti-loosening plate 5 is used for the spring 7 and the anti-loosening bolt 4. Stress transmission among the anti-loosening bolts 4 , there are more than one anti-loosening bolts 4 , and different anti-loosening bolts 4 are arranged on different sides of the compression bolts 6 .

Example 4:

This embodiment is further limited on the basis of any one of the above embodiments. As shown in Figure 1, in order to facilitate the rotation of the compression bolt 6 and the anti-loosening bolt 4, the compression bolt 6 and the anti-loosening bolt 4 are all provided with useful Rotating handle 1 for braking rotation respectively.

As the specific setting form of the sealing strip 8 on this device: the upper surface of the prefabricated table 9 is provided with two grooves whose length direction is parallel to the length direction of the template 2, the cross section of the groove is semicircular, and the two The cross sections of the sealing strips 8 are all circular, and the diameter of the sealing strips 8 is equal to the diameter of the groove surface of the groove, and the two sealing strips 8 are respectively clamped in different grooves;

Inner corners of the bottom surface of the formwork 2 are provided with notches with arc-shaped surfaces, and the surface of the sealing strip 8 is attached to the surface of the notches.

In the setting form of the sealing strip 8 above, it is convenient to further increase the compressive stress between the sealing strip 8 and the surface of the groove and the notch through the deformation of the sealing strip 8 under the extrusion of the gravity of the concrete slurry when the cavity is grouted. Good sealing effect. Further, during the solidification process of the concrete mortar, the two formworks 2 may have relative movement with respect to the prefabricated table 9, the above arrangement of the sealing strip 8 can be further squeezed in the height direction of the sealing strip 8 during the movement of the formwork 2 Compression deformation, so in this case, the sealing strip 8 can still maintain a good sealing effect.

As a preferred solution to facilitate demoulding and increase the stability of the placement of the sealing strip 8, the cross section of the notch is a quarter circle.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific embodiments of the present invention are limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, other implementations obtained without departing from the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. the prefabricated components that can be used for complex beam structure, including grillage (3) and two pieces of templates (2), two pieces of templates (2) are in just to relation, between two pieces of templates (2), there is the gap for clamping template, it is characterized in that, also include that push pedal assembly corresponding with different templates (2) respectively, the push pedal assembly of each template (2) are used for promoting this template (2) to another block template (2) one lateral movement；

Described push pedal assembly includes hold-down bolt (6), spring (7) and check bolt (4), and described hold-down bolt (6) is threadedly connected on grillage (3), and described hold-down bolt (6) contacts with the lateral surface of corresponding templates (2)；

Described check bolt (4) is threadedly connected on grillage (3), and the axis of check bolt (4) is parallel with the axis of corresponding hold-down bolt (6), described spring (7) is arranged between template (2) and the corresponding check bolt (4) of correspondence, in working order, spring (7) two ends are in elastic compression by corresponding templates (2) and the compressive stress of corresponding check bolt (4) respectively；

Also including prefabricated (9) being positioned at two pieces of template (2) lower sections, two pieces of templates (2) are all held on prefabricated (9), are provided with sealing strip (8) between two pieces of templates (2) and prefabricated (9).

A kind of prefabricated components that can be used for complex beam structure the most according to claim 1, it is characterised in that described grillage (3) takes the shape of the letter U, two pieces of templates (2) lay respectively at the inner side of grillage (3) opening not homonymy.

A kind of prefabricated components that can be used for complex beam structure the most according to claim 1, it is characterised in that described spring (7) is all for the groups of springs being formed by stacking by multiple disk springs.

A kind of prefabricated components that can be used for complex beam structure the most according to claim 1, it is characterized in that, spring (7) and hold-down bolt (6) in each push pedal assembly are one, the axis of spring (7) and the axis collinear of hold-down bolt (6) in this push pedal assembly in each push pedal assembly, each push pedal assembly also includes and the locking plate (5) of hold-down bolt (6) matched in clearance in this push pedal assembly, described locking plate (5) is arranged between the spring (7) in this push pedal assembly and check bolt (4), described locking plate (5) is used for the Stress Transfer in this push pedal assembly between spring (7) and check bolt (4), more than one of described check bolt (4), and difference check bolt (4) is arranged at the not homonymy of hold-down bolt (6) in this push pedal assembly.

A kind of prefabricated components that can be used for complex beam structure the most according to claim 1, it is characterized in that, spring (7) in each push pedal assembly is many, the quantity of the hold-down bolt (6) in each push pedal assembly is one, many springs (7) in each push pedal assembly are the most uniform relative to the axis of hold-down bolt (6), each push pedal assembly also includes the locking plate (5) with hold-down bolt (6) matched in clearance, described locking plate (5) is arranged between spring (7) and check bolt (4), described locking plate (5) is for the Stress Transfer between spring (7) and check bolt (4), more than one of described check bolt (4), and difference check bolt (4) is arranged at the not homonymy of hold-down bolt (6).

A kind of prefabricated components that can be used for complex beam structure the most as claimed in any of claims 1 to 5, it is characterised in that be provided with the turning handle (1) for braking each autorotation on described hold-down bolt (6) and check bolt (4).

A kind of prefabricated components that can be used for complex beam structure the most as claimed in any of claims 1 to 5, it is characterized in that, it is provided with two length directions on the upper surface of described prefabricated (9) and is parallel to the groove of template (2) length direction, the cross section semicircular in shape of described groove, article two, the cross section of sealing strip (8) is circle, and the groove face equal diameters of the diameter of sealing strip (8) and described groove, two sealing strips (8) are arranged in different grooves respectively；

Being provided with the breach that surface is arcwall face at the interior angle of template (2) bottom surface, fits with described breach surface in the surface of described sealing strip (8).

A kind of prefabricated components that can be used for complex beam structure the most according to claim 7, it is characterised in that the cross section of described breach is quadrant.