CN218714364U

CN218714364U - Lacing wire connecting piece for concrete structure

Info

Publication number: CN218714364U
Application number: CN202222179203.4U
Authority: CN
Inventors: 钱冠龙
Original assignee: Beijing Sida Jianmao Science & Technology Development Co ltd
Current assignee: Beijing Sida Jianmao Science & Technology Development Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-03-24
Anticipated expiration: 2032-08-18

Abstract

The utility model discloses a lacing wire connecting piece for concrete structure, connecting piece and tip are equipped with two reinforcing bars and the fixation nut built-up assembly of screw thread end and use, and the connecting piece includes: the tie-beam and two lantern rings, two lantern ring body coupling all have the through-hole at the both ends of tie-beam on two lantern rings, the mutual parallel arrangement of axis of two through-holes, and the screw thread stub passes the through-hole and arranges, and fixation nut spiro union is on the screw thread stub to constitute U-shaped opening lacing wire. Its simple structure, easily dismouting compare in the U-shaped opening lacing wire that current bending of reinforcing bar made, can improve the process velocity of U-shaped opening lacing wire greatly, have avoided the potential risk of big radius of gyration bending operation safety to showing and improving installation efficiency of construction, having shortened the time limit for a project, having reduced construction cost.

Description

Lacing wire connecting piece for concrete structure

Technical Field

The utility model relates to a concrete building structure technical field, more specifically the utility model relates to a lacing wire connecting piece for concrete structure that says so.

Background

Steel reinforcement, an important material in concrete structures, has tensile strength and modulus of elasticity far exceeding those of concrete, and mainly bears tensile and shear forces within the structure. The steel bars in the concrete structure are arranged in different directions, and concrete at different parts of the structure is connected into a whole.

When concrete structures are connected and designed, a unidirectional U-shaped opening lacing wire and an annular closed lacing wire are usually adopted as one part of a steel reinforcement framework and are connected with other parts of the structure through anchoring with concrete, or the rigidity of special structural parts is improved through the restraint of the unidirectional U-shaped opening lacing wire and the annular closed lacing wire on the concrete and the excellent tensile and shear resistance of the unidirectional U-shaped opening lacing wire and the annular closed lacing wire on the concrete. The lacing wire of U-shaped opening structure not only has two vertical lacing wires and concrete to form the anchor and is connected, and the circular arc muscle or the horizontal muscle of linearity that it connects two vertical lacing wires form compression and shearing force to the concrete that vertical lacing wire, horizontal muscle surround when vertical lacing wire is pulled for the concrete has better compressive capacity, consequently the anchor ability of this kind of one-way U-shaped opening lacing wire or annular closed lacing wire in the concrete is far more than the anchor ability of two disconnected reinforcing bars, so adopt U-shaped opening lacing wire or annular closed lacing wire can be used to shorten lacing wire anchor length size, reduce the steel quantity. Compared with the action of the unidirectional U-shaped opening lacing wire, the bidirectional constraint is realized by adopting the annular closed lacing wire in the structure, and larger load or bidirectional load can be borne.

The anchoring length of the tensioned steel bar is in direct proportion to the diameter of the steel bar, and for the unidirectional U-shaped open lacing wire or the annular closed lacing wire, the larger the diameter of the steel bar is, the longer the longitudinal length of the lacing wire is. In the special and important concrete structure design, when a steel bar with a larger diameter is adopted to process a U-shaped opening lacing wire, the following problems are difficult to solve: 1) When the U-shaped opening lacing wire is processed, a straight reinforcing steel bar is cut according to a specified size, the part close to the middle part is bent for 180 degrees, the reinforcing steel bar with a larger diameter is usually used as a main reinforcing steel bar, and the tensile strength of the material is higher. The speed during bending cannot be too high, and the U-shaped open lacing wires are thick in diameter, the length of the bent longitudinal rib is also long, the turning radius is large, the occupied area of machining operation is large, the production and machining efficiency is low, and when a large amount of U-shaped open lacing wires are required by engineering, the on-site production and machining speed is often difficult to ensure the requirement on the construction progress of the structure; 2) When the form of annular closed lacing wire is adopted, in order to facilitate structural installation, two sections of U-shaped open lacing wires are generally overlapped together structurally, then longitudinal lacing wires of the two U-shaped open lacing wires are welded together, a large number of welding workers and welding equipment are needed for welding, a large number of installation works of the annular closed lacing wires cannot be completed on site when a large number of construction site professionals are few and insufficient power capacity is equipped, and popularization and application of the efficient material-saving structural component are influenced.

Therefore, how to provide a tie bar connecting piece for a concrete structure, which can realize on-site rapid processing and installation, has low requirements on equipment and less power consumption, can obviously improve the installation and construction efficiency, shortens the construction period, reduces the construction cost, and can be assembled into a U-shaped opening tie bar or an annular closed tie bar, is a problem that needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can realize on-spot quick processing and installation, require lowly to equipment, the power consumption is few, can show improvement installation efficiency of construction, reduction of erection time, reduction construction cost just can assemble into the lacing wire connecting piece for concrete structure of U type opening lacing wire or annular closed lacing wire.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a concrete structure is with lacing wire connecting piece, the connecting piece is used with two reinforcing bars and the fixation nut combination assembly that the tip was equipped with the screw thread head, the connecting piece includes: the connecting beam and two lantern rings, two lantern ring body coupling is in the both ends of connecting beam, two all have a through-hole on the lantern ring, two the axis of through-hole is parallel arrangement each other, the screw thread end passes the through-hole is arranged, the fixation nut spiro union is in on the screw thread end to constitute U-shaped opening lacing wire.

Adopt above-mentioned technical scheme to produce beneficial effect is that, during the combination, wear the lantern ring on the screw thread, then fasten through fixing nut, can make up into U-shaped opening lacing wire with tie-beam and two reinforcing bars. Its simple structure, easily dismouting compare in the U-shaped opening lacing wire that current bending of reinforcing bar made, can improve the process velocity of U-shaped opening lacing wire greatly, have avoided the potential risk of big radius of gyration bending operation safety to showing and improving installation efficiency of construction, having shortened the time limit for a project, having reduced construction cost.

Further, the thickness L1 of the lantern ring in the axial direction of the through hole of the lantern ring is 0.8-1.5 times of the diameter of the steel bar.

Further, the thickness L2 of the lantern ring in the radial direction of the through hole of the lantern ring is not less than 1/5 of the diameter of the steel bar.

Adopt the beneficial effect that above-mentioned technical scheme produced to be, guarantee the structural strength of lantern ring connection on the reinforcing bar.

Further, the length of the thread head is greater than or equal to the sum of the thickness LI of the lantern ring and 1 time of the diameter of the reinforcing steel bar.

Further, the neutral axis of the connecting beam is a curve or a straight line or a combination of the straight line and the curve.

Furthermore, the cross section of the connecting beam perpendicular to the axis of the connecting beam is U-shaped, inverted U-shaped, I-shaped, H-shaped, T-shaped, inverted T-shaped, rectangular or oval.

Furthermore, the projection of the outer edge of the lantern ring on a plane vertical to the axis of the through hole is rectangular, or polygonal, or circular, or a polygon formed by circular arcs and straight lines.

Furthermore, the tail end of the threaded screw head is provided with a positioning step surface, and one side surface of the lantern ring is abutted to the positioning step surface.

Adopt the beneficial effect that above-mentioned technical scheme produced to be, easily the quick location installation of tie-beam on the reinforcing bar.

Furthermore, the connecting piece and the fixing nut are made of steel materials.

The beneficial effects that adopt above-mentioned technical scheme to produce are, intensity is big, long service life.

Furthermore, the connecting pieces are two and are respectively arranged at two ends of the two reinforcing steel bars to form an annular closed lacing wire.

The technical scheme has the beneficial effects that the annular closed lacing wire can be combined without steel bar lap welding, and the device has the advantages of convenience and quickness in field installation, large material saving, electric power and power equipment investment saving, labor saving and work efficiency improvement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a tie bar connector for a concrete structure according to a first embodiment of the present invention.

Fig. 2 is a side view of the structure of fig. 1.

Fig. 3 is a schematic front view of the structure of fig. 1.

Fig. 4 isbase:Sub>A schematic cross-sectional view of the sectionbase:Sub>A-base:Sub>A in fig. 3.

Fig. 5 is a schematic structural view of a tie bar connector for a concrete structure according to a second embodiment of the present invention.

Fig. 6 isbase:Sub>A schematic cross-sectional view of the sectionbase:Sub>A-base:Sub>A in fig. 5.

Fig. 7 is a schematic structural view of a tie bar connecting piece according to a third embodiment of the present invention.

Fig. 8 is a side view of the structure of fig. 7.

Fig. 9 isbase:Sub>A schematic cross-sectional view of sectionbase:Sub>A-base:Sub>A in fig. 7.

Fig. 10 is a schematic structural view of the reinforcing bar.

Fig. 11 is a schematic structural view of a U-shaped open tie bar combined by a connecting member, a reinforcing bar and a fixing nut according to the first embodiment.

Fig. 12 is a schematic structural view of the first embodiment of two connectors combined with the reinforcing bars and the fixing nuts to form a ring-shaped closed tie bar.

Fig. 13 is a schematic structural view of two connectors of the second embodiment combined with a reinforcing bar and a fixing nut to form an annular closed tie bar.

Fig. 14 is a schematic structural view of a U-shaped open tie combined by a connector of the third embodiment, a reinforcing bar and a fixing nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses lacing wire connecting piece for concrete structure, connecting piece 1 uses with 3 built-up fittings of fixation nut with two reinforcing bars 2 that the tip was equipped with screw thread stub 21, and connecting piece 1 includes: the U-shaped opening lacing wire comprises a connecting beam 11 and two lantern rings 12, wherein the two lantern rings 12 are integrally connected to two ends of the connecting beam 11, through holes 122 are formed in the two lantern rings 12, the axes of the two through holes 122 are arranged in parallel, a threaded screw head 21 penetrates through the through holes 122 to be arranged, and a fixing nut 3 is screwed on the threaded screw head 21 to form a U-shaped opening lacing wire 100; the connecting piece 1 is made of high-strength steel through hot forging and processing, and the connecting position of the lantern ring 12 and the connecting beam 11, the outer edge of the connecting beam 11 and the outer edge of the lantern ring 12 are required to be arranged in a rounded corner mode.

The end of the screw head 21 is provided with a positioning step surface 22, and one side surface of the lantern ring 12 abuts against the positioning step surface 22.

The thickness L1 of the lantern ring 12 in the axial direction of the through hole 122 is 0.8-1.5 times of the diameter of the steel bar 2.

The thickness L2 of the collar 12 in the radial direction of the through hole 122 is not less than 1/5 of the diameter of the steel bar 2, and L2 is 4mm at the minimum.

The length of the screw head 21 is greater than or equal to the sum of the thickness L1 of the

collar

12 and 1 time the diameter of the steel bar 2.

The neutral axis of the connecting beam 11 is a U-shaped curve (fig. 3) or a circular arc line or a straight line (fig. 5 and 8).

The cross section of the connecting beam 11 perpendicular to the axis of the connecting beam is U-shaped (fig. 4, the connecting beam 11 is provided with a groove, and two side parts of the groove are equivalent to anchoring ribs), or inverted U-shaped, or I-shaped, or H-shaped (fig. 6), or T-shaped, or inverted T-shaped, or rectangular (fig. 9), or oval.

The projection of the outer edge of the lantern ring 12 on a plane vertical to the axis of the through hole is rectangular (figure 5), or polygonal, or circular (figure 7), or polygonal formed by circular arcs and straight lines (figure 1).

The connecting pieces 2 are two and are respectively detachably mounted at two ends of the two steel bars 2, in this embodiment, two ends of the steel bars 2 are respectively processed with a threaded head 21, and the tail parts of the threaded heads 21 are both processed with a positioning step surface 22.

Example 1, referring to fig. 12, an example of an annular closed tie bar is assembled as follows:

1) The steel bar 2 is cut according to the length and the size required by the design, the end parts of the two ends of the steel bar 2 are respectively processed with a thread head 21, and the distance from the end part of the thread head to the positioning step surface 22 is more than or equal to the sum of the thickness LI of the lantern ring 12 and the diameter of the steel bar 2 which is 1 time;

2) Taking more than two steel bars 2 with threaded screw heads 21 processed at two ends, respectively sleeving the lantern rings 12 at two ends of one connecting beam 11 on the threaded screw heads 21 at one ends of the two steel bars 2, wherein the threaded screw heads 21 penetrate through holes 122 of the lantern rings 12 of the connecting beam 11, and one side surface of the lantern ring 12 is abutted against the positioning step surface 22;

3) Installing two fixing nuts 3 on the threaded screw heads 21 of the two steel bars 2 with the connecting beam 11 installed, respectively, matching the internal threads of the fixing nuts 3 with the threaded screw heads 21, rotating the fixing nuts 3 until the end surfaces of the fixing nuts are tightly attached to the other side surface of the lantern ring 12, applying proper pre-tightening torque, and firmly locking the connecting beam 11 at one end of the steel bars 2;

4) The opening device consisting of the connecting beam 11, the two steel bars 2 and the two fixing nuts 3 is taken to a site installation station, the two steel bars 2 are inserted into a specified steel bar framework installation position to be fixed, a space enclosed by the two steel bars 2 and the installed connecting beam 11 can be used for placing longitudinal steel bars of the steel bar framework, the second connecting beam 11 is installed on a thread head 21 at the other end of each of the two steel bars 2, the 2 fixing nuts 3 are installed and pre-tightened according to the same steps, and an annular closed lacing wire 200 is installed on site.

Compared with the traditional two-way U-shaped steel bar lap welding process for forming the two-way tensile piece, the installation process of the annular closed lacing wire is quick and convenient, does not need power equipment or professional workers, and achieves the purposes of material saving, energy saving and high efficiency.

Example 2, referring to fig. 13, another embodiment of an annular closure tie is assembled as follows:

2) Taking more than two steel bars 2 with threaded screw heads 21 processed at two ends, respectively sleeving the lantern rings 12 of the two connecting beams 11 on the threaded screw heads 21 at the two ends of the two steel bars 2, respectively penetrating the four threaded screw heads 21 through holes 122 of the four lantern rings 12 of the two connecting beams 11, and enabling one side faces of the lantern rings 12 to abut against the positioning step faces 22;

3) And four fixing nuts 3 are respectively arranged on the threaded screw heads 21 at two ends of the steel bar 2, the fixing nuts 3 are screwed until the end surfaces of the fixing nuts are tightly attached to the lantern ring 12, a small pre-tightening force is properly added, and after all the fixing nuts 3 on the steel bar 2 are screwed, the assembly of the annular closed lacing wire 200 is completed. And then the device is fixed at the specified position of the structural steel reinforcement framework according to the installation requirement. If a longitudinal steel bar is further inserted into the closed ring surrounded by the steel bar 2 and the connecting beam 11, the assembly operation of the corresponding steel bar is carried out according to the subsequent process.

Compared with the traditional bidirectional U-shaped steel bar welding and sealing process or the processing process of welding a steel bar to form a bidirectional closed stretching piece after 2 times of bending, the bidirectional closed tension bar has the advantages of convenient production and processing, quick assembly, high material utilization rate, accurate size processing, no need of professional workers and capability of achieving the purposes of material saving, energy saving and high efficiency.

Example 3 referring to fig. 14, the assembly steps of an example of a U-shaped open tie bar are the same as the previous steps of example 1, and thus, the assembly operation of a U-shaped open tie bar can be completed. The assembled U-shaped opening lacing wire is taken to a field installation station, two steel bars 2 are inserted into a specified steel bar framework installation position, longitudinal steel bars of the framework are placed in the space between the two steel bars 2 and the installed connecting beam 11, the steel bars 2 and other steel bars are bound or fixed in a spot welding mode, and the U-shaped opening lacing wire 100 is installed on the field.

Compared with the traditional production process of the U-shaped opening lacing wire, the U-shaped opening lacing wire has the advantages that the occupied area of a required processing operation field is small, the production and processing are convenient, the assembly is quick, the material utilization rate is high, the size processing is accurate, professional workers are not needed, and the purposes of material saving, energy saving and high efficiency are achieved.

To sum up, the utility model has the advantages that, use connecting piece and processing to have the reinforcing bar and the fixation nut of screw thread head to constitute U-shaped opening lacing wire or annular closed lacing wire, its anchor connection ability equals or is superior to the U type lacing wire that current with the reinforcing bar bending was made: 1) The processing speed of the U-shaped opening lacing wire can be greatly improved, and the potential risk of the bending processing operation safety with large turning radius is avoided; 2) The length of the used steel bar is less than that of the U-shaped lacing wire with the same specification, so that the material utilization rate is improved, and even a stub bar cut by the steel bar can be utilized, so that steel is greatly saved; 3) When the annular closed lacing wire is formed, the lapping welding of the reinforcing steel bars is not needed, the field installation is convenient and quick, simultaneously, a large amount of materials are saved, the investment of electric power and electric power equipment is saved, and the labor is saved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a lacing wire connecting piece for concrete structure which characterized in that, connecting piece (1) and two reinforcing bars (2) and fixation nut (3) that the tip was equipped with screw thread (21) are assembled the use, connecting piece (1) includes: tie-beam (11) and two lantern rings (12), two lantern ring (12) body coupling is in the both ends of tie-beam (11), two all have through-hole (122), two on the lantern ring (12) the axis of through-hole (122) is parallel to each other arranges, screw thread head (21) are passed through-hole (122) are arranged, fixation nut (3) spiro union is in on screw thread head (21) to constitute U-shaped opening lacing wire (100).

2. A tie bar coupler for concrete structures according to claim 1, wherein the thickness L1 of said collar (12) in the axial direction of said through hole (122) is 0.8 to 1.5 times the diameter of said reinforcing bar (2).

3. A tie bar coupler for concrete structures according to claim 1, wherein the thickness L2 of said collar (12) in the radial direction of said through hole (122) is not less than 1/5 of the diameter of said reinforcing bar (2).

4. A tie rod connector for a concrete structure according to claim 1, wherein the length of said screw head (21) is greater than or equal to the sum of the thickness of said collar (12) and 1 time the diameter of said reinforcing steel rod (2).

5. A tie connector for concrete structures according to claim 1, characterized in that the neutral axis of said connecting beam (11) is curved or straight or a combination of straight and curved.

6. The tie bar coupler for concrete structures according to claim 1, wherein the cross-sectional shape of the coupling beam (11) perpendicular to its axis is a U-shape, an inverted U-shape, an i-shape, an H-shape, a T-shape, an inverted T-shape, a rectangular shape, or an oval shape.

7. A tie connector for a concrete structure according to claim 1, wherein the projection of the outer edge of said collar (12) on a plane perpendicular to the axis of said through hole (122) is polygonal or circular.

8. A tie bar connector for a concrete structure according to claim 1, wherein a distal end of said screw head (21) is provided with a positioning step surface (22), and a side surface of said collar (12) abuts on said positioning step surface (22).

9. The tie bar connector for concrete structures according to claim 1, wherein said connector (1) and said fixing nut (3) are made of steel.

10. A tie bar coupler for concrete structures according to any one of claims 1-9, wherein said coupler (1) is two and is installed at both ends of two said reinforcement bars (2), respectively, to constitute a ring-shaped closed tie bar (200).