Concrete-filled steel tube truss prestress superposed beam

Abstract

The utility model discloses a concrete filled steel tube truss prestress superposed beam which comprises a steel tube, wavy truss web bars are welded on two sides of the lower portion of the steel tube along the length direction, a bundling connecting piece is arranged at each wave trough of the truss web bars, and each bundling connecting piece comprises a transverse rod and longitudinal rods at two ends. The two sides of the upper portion of the transverse rod are provided with clamping grooves used for being connected with the bent positions of truss web bars in a clamped mode, the portions, on the inner sides and the outer sides of the clamping grooves, of the upper portion of the transverse rod are further provided with a plurality of pairs of supports with through holes, and each pair of supports binds a prestressed tendon through a binding assembly. The outer sides of the two ends of the two longitudinal rods are each provided with a hoop B, and a stirrup is clamped by the pair of hoops B; two or more than two hoops C are arranged at the upper part of the cross rod, and a short rib is clamped by the hoops C; cubic areas formed by the bottoms of the truss web bars, the bundling connecting pieces, the middle sections of the prestressed bars and the bottoms of the stirrups are poured to form a concrete bottom plate; according to the utility model, the time of binding the reinforcing steel bars on site for fixing is saved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building materials, especially steel pipe concrete truss prestressed composite beam. BACKGROUND

[0002] In the development of domestic fabricated building, most of the existing fabricated composite beams are composed of ordinary reinforced concrete. In large-span heavy load structures, due to the low strength of steel bars, high content of steel bars, large amount of concrete, heavy weight of components, complex factory processing mold, more embedded parts, inability to realize component standardization, large component cost, complex main and secondary beam component connection and beam-column connection structure, serious conflict of precast beam steel bars with column steel bars on site, and other problems, on-site installation is particularly difficult.

[0003] Application No. CN202121570255.3 proposes a steel pipe truss prestressed composite beam, which adopts factory prefabricated concrete components, and pours concrete on site after binding steel bars on the prefabricated components to form a high-strength prestressed composite beam. This structure has the advantages of high ultimate bearing capacity, large stiffness, less or no support, light component weight, partial non-prestressed steel bars on site binding, effective avoidance of steel bar conflict between components, simple component processing technology, facilitation of industrialized production, convenient installation and construction, simple construction technology, etc. At the same time, the truss steel pipe is used to replace the traditional stirrup, reducing on-site steel bar binding and improving construction efficiency.

[0004] However, this composite beam needs to bundle steel bars on site to fix prestressed steel bars and the like with the truss for pouring, which wastes time and is low in efficiency. SUMMARY

[0005] In order to reduce the on-site construction time of the prestressed composite beam and improve the production efficiency, the utility model provides a steel pipe concrete truss prestressed composite beam, which has the structure including: a steel pipe, wave-shaped truss web members are welded on both sides of the lower part of the steel pipe along the length direction, a binding connecting piece is arranged at each wave trough of the truss web member, the binding connecting piece includes a horizontal rod and vertical rods at both ends, the upper part of the horizontal rod is provided with a clamping groove on both sides for clamping with the bent part of the truss web member, a plurality of pairs of supports with through holes are arranged on the inner side and the outer side of the clamping groove of the upper part of the horizontal rod, one prestressed bar is placed on each pair of supports, and a binding assembly is used to bind the prestressed bars on the supports; a clamp B is arranged on the outer side of the end of each vertical rod, and one stirrup is clamped by a pair of clamp Bs; two or more clamp Cs are arranged on the upper part of the horizontal rod, and one short bar is clamped by the clamp C; a cubic region formed by the bottom of the truss web member, the binding connecting piece, the middle section of the prestressed bar and the bottom of the stirrup is poured to form a concrete bottom plate; the binding assembly includes a rope body, a bolt-shaped rope head is fixed at one end of the rope body, and the rope body is a steel wire or a steel strand.

[0006] Preferably, the two ends of the prestressed bar each have an anchoring part protruding from the concrete bottom plate.

[0007] Preferably, the clamps B and C each comprise a connecting rod for fixing with the horizontal or vertical rod, and the end of the connecting rod is provided with a C-shaped elastic clamping piece.

[0008] Preferably, the clamps B and C are made of alloy.

[0009] Preferably, the thickness of the clamping piece is 1mm.

[0010] Preferably, the steel pipe is filled with concrete or high-strength mortar.

[0011] The utility model discloses a truss's each bending place adds the binding connecting piece, and the connecting piece has the clamping groove that is clamped with the truss web, and after being fixed with the web, only needs to clamp the short reinforcement, hoop reinforcement in corresponding clamp during the construction on the spot, and the prestressed reinforcement is bound on the support with the binding assembly, can the construction of the prefabricated component steel skeleton is quickly completed to carry out the subsequent pouring operation, saves the time of the on -the -spot binding reinforcement and fixes, improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawing needed to be used in the specific embodiment or the prior art description, and obviously, the drawing in the following description is some embodiment of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0013] Figure 1 It is the installation schematic drawing before pouring of the utility model.

[0014] Figure 2 It is the perspective view of the binding connecting piece.

[0015] Figure 3 It is the connection schematic drawing of prestressed reinforcement and support.

[0016] Figure 4 It is the schematic drawing after pouring of the utility model.

[0017] In the drawing: 1, steel pipe, 2, truss web, 3, prestressed reinforcement, 4, binding connecting piece, 5, hoop reinforcement, 6, short reinforcement, 41, clamping groove, 42, support, 43, clamp B, 44, vertical rod, 45, clamp D, 46, clamp C, 47, rope head, 48, rope body. EMBODIMENT

[0018] The various devices (parts not specifically described) selected in the present application are all general standard parts or parts known to those skilled in the art, the structure and principle of which can be known to the skilled person through a technical manual or through conventional experimental methods.

[0019] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] In the description of the present application, it should be pointed out that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0021] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interfaces, devices or units, which can be electrical, mechanical or other forms.

[0022] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. they can be located in one place or distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the present embodiment.

[0023] In addition, the functional units in each embodiment of the present application can be integrated into one processing unit, or each unit can exist physically, or two or more units can be integrated into one unit. Embodiment 1

[0024] As Figures 1-4 shown, the steel pipe concrete truss prestressed composite beam, its structure includes: steel pipe 1, the lower part both sides of steel pipe 1 are welded with the truss web 2 in length direction in wave shape, is equipped with the binding connecting piece 4 at every trough of truss web 2, the binding connecting piece 4 includes a crossbar and the longitudinal rod 44 at both ends, the upper part both sides of crossbar are equipped with the clamping groove 41 for with the bending portion of truss web 2 clamping, the upper part of crossbar is equipped with several pairs of support 42 with through hole on the inside and outside of clamping groove, places a prestressed tendon 3 on every pair of support 42, and using binding assembly will be prestressed tendon 3 bind on support 42;The outside of both ends of two longitudinal rods 44 is equipped with a clamp B43, a hoop 5 is clamped by a pair of clamp B43;The upper part of crossbar is equipped with two or more than two clamp C46, the upper part of one end of longitudinal rod 44 is also equipped with clamp D45, clamp C46 and clamp C46 clamps a short muscle 6, realizes that every truss web 2 is provided with a short muscle 6 in bending portion;The cuboid area formed by the bottom of truss web 2, binding connecting piece 4, prestressed tendon 3 middle section, hoop 5 bottom pours and forms concrete bottom plate;The binding assembly includes: rope body 48, the one end of rope body 48 is fixed with bolt-shaped rope head 47, the rope body is steel wire, and the rope head is made of metal, plays the limiting effect, it is used for abutting on the through hole outside of the support of the leftmost end or the rightmost end when installing, then the rope body is wound around all prestressed tendon 3, and the other end of rope body is knotted, and prestressed tendon 3 can be bound on support 42.

[0025] More specifically, the both ends of the prestressed tendon 3 have anchoring portions protruding from the concrete bottom plate.

[0026] More specifically, the clamp B43 and the clamp C46 each include a connecting rod for fixing with the crossbar or the longitudinal rod 44, and the end of the connecting rod has a C-shaped elastic clamping piece. The clamping pieces of the three types of clamps have different axial directions, facilitating clamping of the prestressed tendon 3, the hoop 5, and the short muscle 6 arranged in different directions.

[0027] More specifically, the clamp B43 and the clamp C46 are made of aluminum alloy.

[0028] More specifically, the thickness of the clamping piece is 1 mm. The material and thickness of the clamping piece enable it to have a certain elasticity for clamping the prestressed tendon 3, the hoop 5, and the short muscle 6 to form fixation. The clamping groove 41 also has elasticity and can clamp the lower bending portion of the truss web 2.

[0029] More specifically, the steel pipe 1 is filled with high-strength mortar.

[0030] The utility model discloses a bundle connecting piece is added to every bending place of truss, and the connecting piece has the clamping groove of clamping with the web of truss, and after fixing, only needs to clamp the short muscle, hoop muscle in corresponding clamping hoop during on -the -spot construction, and prestressed reinforcement is bound on the support with the bundle assembly, and the construction of prefabricated component steel skeleton can be quickly completed to carry out the subsequent pouring operation, saves the time of fixing on -the -spot bundle reinforcement, and improves production efficiency.

[0031] Although the embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A prestressed composite steel tube concrete truss beam, characterized by: include: A steel pipe, with wavy truss web reinforcement welded on both sides of the lower part of the steel pipe along the length direction, and a binding connector is installed at each trough of the truss web reinforcement, the binding connector includes a cross bar and longitudinal bars at both ends, and the upper part of the cross bar is provided with grooves for clamping with the bending parts of the truss web reinforcement, and the upper part of the cross bar is also provided with several pairs of brackets with through holes on the inner and outer sides of the grooves, a prestressed reinforcement is placed on each pair of brackets, and the prestressed reinforcement is tied to the brackets using a binding assembly; a clamp B is provided on the outer sides of each end of the two longitudinal bars, and a pair of clamps B is clamped with a stirrup; two or more clamps C are also provided on the upper part of the cross bar, and the clamp C is clamped with a short reinforcement; the cubic area formed by the bottom of the truss web reinforcement, the binding connector, the middle section of the prestressed reinforcement, and the bottom of the stirrup is cast to form a concrete base plate; the binding assembly includes: a rope body, a bolt-shaped rope head is fixed at one end of the rope body, and the rope body is a steel wire or a steel strand.

2. The prestressed composite steel tube concrete truss beam according to claim 1, characterized in that: Both ends of the prestressed tendons are provided with anchoring portions protruding from the concrete bottom plate.

3. The prestressed composite steel tube concrete truss beam according to claim 2, characterized in that: The clamp B and the clamp C each include a connecting rod for fixing to a transverse rod or a longitudinal rod, and a C-shaped elastic clamping piece is provided at the end of the connecting rod.

4. The prestressed composite steel tube concrete truss beam according to claim 3, characterized in that: The clamp B and the clamp C are made of alloy.

5. The prestressed composite steel tube concrete truss beam according to claim 4, characterized in that: The thickness of the clamping piece is 1 mm.

6. The prestressed composite steel tube concrete truss beam according to claim 4, characterized in that: The steel pipe is filled with concrete or high-strength mortar.

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