A beam reinforcement system for prestressed arch supports

Abstract

The utility model discloses a prestressed arch-supported beam reinforcement system, comprising an existing structural beam, two existing structural columns and a supporting arch structure; the two ends of the existing structural beam are respectively connected to the existing structural columns on both sides; the supporting arch structure is located at the lower part of the existing structural beam, one end of the supporting arch structure is connected to one of the existing structural columns through a hinged support, and the other end of the supporting arch structure is connected to another existing structural column through a thrust support; the arch top of the supporting arch structure is supported at the mid-span position of the bottom of the existing structural beam; a sliding plate is arranged between the top of the supporting arch structure and the bottom of the existing structural beam, and the supporting arch structure can slide relative to the lower surface of the sliding plate. The beneficial effects of the utility model are: the existing structural beam is unloaded by using the supporting arch structure, and this design is flexible and reliable, and the construction is simple and convenient.

Description

Technical Field

[0001] The utility model relates to a beam reinforcement system, in particular to a prestressed arch supported beam reinforcement system. Background Art

[0002] The reinforcement and renovation of existing buildings is one of the main contents in the current housing construction field. During the reinforcement and renovation process, due to changes in building functions and load conditions, it is necessary to reinforce the existing structural beams. In the prior art, the reinforcement of concrete beams generally adopts carbon fiber bonding, steel bonding, increasing the cross-section method or adding steel beams at the bottom of the beam, etc. The steel beam can adopt the method of increasing the cross-section, etc. However, among the above methods, the effect of carbon fiber bonding and steel bonding on increasing the bearing capacity of the beam is limited. The method of increasing the cross-section can greatly improve the bearing capacity of the beam, but the method of increasing the cross-section has the disadvantages of large on-site wet work workload, greater construction difficulty, and the increased beam cross-section affects the use space of the building. The method of adding a steel beam to the bottom of the beam can greatly improve the bearing capacity of the beam, and transportation and construction are more convenient than the method of increasing the cross-section, but the method of adding a steel beam to strengthen the beam also has the problems of limited construction space at the bottom of the beam, affecting the use effect of the building, and complex force transmission.

[0003] Therefore, it is necessary to improve the prior art. Summary of the invention

[0004] The utility model aims to provide a prestressed arch supported beam reinforcement system which is convenient to construct, in view of the deficiencies of the prior art.

[0005] The technical solution adopted by the utility model is: a prestressed arch supported beam reinforcement system, including an existing structural beam, two existing structural columns and a supporting arch structure;

[0006] The two ends of the existing structural beam are respectively connected to the existing structural columns on both sides;

[0007] The supporting arch structure is located at the lower part of the existing structural beam, one end of the supporting arch structure is connected to one of the existing structural columns through a hinged support, and the other end of the supporting arch structure is connected to another existing structural column through a thrust support; the arch top of the supporting arch structure is supported at the mid-span position of the bottom of the existing structural beam;

[0008] A sliding plate is arranged between the top of the supporting arch structure and the bottom of the existing structural beam, and the supporting arch structure can slide relative to the lower surface of the sliding plate.

[0009] According to the above scheme, the existing structural beams and existing structural columns are both concrete structures.

[0010] According to the above solution, the sliding plate can be a polytetrafluoroethylene plate; the sliding plate is glued and fixed to the mid-span position of the bottom of the existing structural beam.

[0011] According to the above scheme, the supporting arch structure is one of an H-shaped steel beam, a box-section steel tube beam and a box-section steel tube concrete beam.

[0012] According to the above scheme, the hinged support includes a fixing plate, which is connected to the existing structural column through a first anchor bolt, and the first anchor bolt is adapted to the first fastening nut; the fixing plate is connected to the supporting arch structure through high-strength bolts.

[0013] According to the above scheme, the thrust bearing includes an inner plate, an outer plate, a steel rod, a thrust nut and a locking nut. The inner plate is vertically fitted and connected to the existing structural column; the outer plate is arranged opposite to and parallel to the inner plate, and the two are connected by at least two steel rods; thrust nuts and locking nuts threadedly connected to the steel rods are respectively provided on both sides of the outer plate; the lower end of the supporting arch structure is connected to the outer plate by high-strength bolts.

[0014] According to the above scheme, the existing structural beams and existing structural columns are all steel structures.

[0015] According to the above scheme, the hinged support also includes a first mounting plate and a first screw; the first mounting plates are respectively arranged on the sides of the existing structural columns and vertically fitted, and the first mounting plate is connected to the fixed plate through the first screw; a first fastening nut is provided on the outer side of the first screw.

[0016] According to the above scheme, the thrust bearing is also provided with a second mounting plate, which is vertically fitted with the other side of the existing structural column. The inner plate and the second mounting plate are connected by a second screw and fixed by a second fastening nut.

[0017] According to the above solution, both the first screw and the second screw are steel structures.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model designs a supporting arch structure at the lower part of the existing structural beam. The end of the supporting arch structure is connected to the existing structural column through a thrust bearing. The thrust of the supporting arch structure on the existing structural beam is adjusted by adjusting the distance between the thrust bearing and the existing structural column to unload the existing structural beam, and transfer the load to the existing structural column through the arch support member, which can effectively reduce the load of the original structural beam. This design is flexible and reliable, and the construction is simple and convenient.

[0020] 2. The supporting arch structure in the utility model can be prefabricated in a factory, and the construction is simple and the construction quality is easy to ensure, and the use function of the existing building structure is not affected.

[0021] 3. In the utility model, equipment pipelines can pass through the gap between the supporting arch structure and the existing structural beam, thereby improving equipment utilization.

[0022] 4. The supporting arch structure of the utility model has a beautiful shape, which can significantly improve the aesthetics of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the first embodiment of the present utility model.

[0024] Figure 2 It is a schematic diagram of the overall structure of the thrust bearing in the first embodiment.

[0025] Figure 3 This is an inner side view of the thrust bearing in the first embodiment.

[0026] Figure 4 This is an outer side view of the hinged support in the first embodiment.

[0027] Figure 5 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0028] Figure 6 It is a schematic diagram of the connection between the existing structural column and the hinged support in the second embodiment.

[0029] Among them: 1-supporting arch structure; 2-existing structural beam; 3-existing column; 4-sliding plate; 5-hinge support; 51-first anchor bolt; 52-fixing plate; 53-first fastening nut; 54-first screw; 55-first mounting plate; 6-thrust support; 61-inner plate; 62-outer plate; 63-steel rod; 64-thrust nut; 65-locking nut; 66-second anchor bolt; 67-second fastening nut; 68-second mounting plate; 69-second screw; 7-high-strength bolt; 8-pipeline. DETAILED DESCRIPTION

[0030] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Embodiment 1

[0032] like Figure 1 A prestressed arch-supported beam reinforcement system is shown, comprising an existing structural beam 2, two existing structural columns 3 and a supporting arch structure 1;

[0033] Both ends of the existing structural beam 2 are respectively connected to the existing structural columns 3 on both sides;

[0034] The supporting arch structure 1 is located at the lower part of the existing structural beam 2, one end of the supporting arch structure 1 is connected to one of the existing structural columns 3 through a hinged support 5, and the other end of the supporting arch structure 1 is connected to another existing structural column 3 through a thrust support 6; the arch top of the supporting arch structure 1 is supported at the mid-span position of the bottom of the existing structural beam 2;

[0035] A sliding plate 4 is arranged between the top of the supporting arch structure 1 and the bottom of the existing structural beam 2 , and the supporting arch structure 1 can slide relative to the lower surface of the sliding plate 4 .

[0036] In this embodiment, the existing structural beams 2 and the existing structural columns 3 are both concrete structures, that is, the existing structural beams 2 are existing concrete beams, and the existing structural columns 3 are existing concrete columns.

[0037] In the utility model, the supporting arch structure 1 is connected to the existing structural column 3 via the thrust bearing 6. By adjusting the horizontal displacement of the thrust bearing 6 relative to the existing structural column 3, the upward thrust generated by the arch top of the supporting arch structure 1 can be adjusted.

[0038] Preferably, the sliding plate 4 can be a polytetrafluoroethylene plate; the sliding plate 4 is glued and fixed to the mid-span position of the bottom of the existing structural beam 2.

[0039] In the present invention, the supporting arch structure 1 is one of an H-shaped steel beam, a box-section steel tube beam and a box-section steel tube concrete beam. The axis and cross section of the supporting arch structure 1 can be determined based on the architectural aesthetics and structural force requirements.

[0040] Preferably, if Figure 1 and Figure 4 As shown, the hinged support 5 includes a fixing plate 52 , which is connected to the existing structural column 3 via a first anchor bolt 51 , and the first anchor bolt 51 is adapted to a first fastening nut 53 ; the fixing plate 52 is connected to the supporting arch structure 1 via a high-strength bolt 7 .

[0041] Preferably, if Figure 2 and Figure 3 As shown, the thrust bearing 6 includes an inner plate 61, an outer plate 62, a steel rod 63, a thrust nut 64 and a locking nut 65. The inner plate 61 is vertically fitted and connected to the existing structural column 3; the outer plate 62 is arranged opposite to and parallel to the inner plate 61, and the two are connected by at least two steel rods 63; thrust nuts 64 and locking nuts 65 threadedly connected to the steel rod 63 are respectively provided on both sides of the outer plate 62; the lower end of the supporting arch structure 1 is connected to the outer plate 62 by high-strength bolts 7.

[0042] In the present invention, the inner plate 61 and the outer plate 62 are both steel plates.

[0043] In the utility model, the locking nut 65 is arranged on the outer side of the outer plate 62, and the thrust nut 64 is arranged on the inner side of the outer plate 62; the distance between the outer plate 62 and the inner plate 61 is adjusted by the locking nut 65 and the thrust nut 64 to adjust the horizontal displacement of the thrust support 6, so that the arch generates an upward thrust.

[0044] In the utility model, the inner plate 61 is connected to the existing structural column 3 through a second anchor bolt 66. Specifically, one end of the second anchor bolt 66 is arranged in the existing structural column 3, and the other end of the second anchor bolt 66 passes through the existing structural column 3 and the hole arranged in the inner plate 61, and is connected to the second fastening nut 67 on the outside of the inner plate 61.

[0045] Embodiment 2

[0046] like Figure 5 A prestressed arch-supported beam reinforcement system is shown in the figure, wherein the existing structural beam 2 and the existing structural column 3 are both steel structures (that is, the existing structural column 3 is an existing steel column, and the existing structural beam 2 is an existing steel beam); the cross section of the existing structural column 3 is a square; Figure 6 As shown, the hinged support 5 also includes a first mounting plate 55 and a first screw 54; the first mounting plates 55 are respectively arranged on the side of the existing structural column 3 (the side opposite to the fixed plate 52) and are vertically fitted, and the first mounting plate 55 and the fixed plate 52 are connected by the first screw 54; the outer side of the first screw 54 is provided with a first fastening nut 53; the thrust support 6 is also provided with a second mounting plate 68, and the second mounting plate 68 is vertically fitted with the other side surface of the existing structural column 3, and the inner plate 61 and the second mounting plate 68 are connected by the second screw 69 and fixed by the second fastening nut 67; the first screw 54 and the second screw 69 are both steel structures.

[0047] The construction process of the first embodiment is as follows:

[0048] Step S10, prefabricating the supporting arch structure 1 and the thrust bearing 6 in a factory, and transporting them to the reinforcement project site;

[0049] Step S20, grinding the bottom of the mid-span beam of the existing structural beam 2 and pasting the sliding plate 4;

[0050] Step S30, post-planting the first anchor bolt 51 and the second anchor bolt 66 on the existing structural columns 3 (at the arch foot) on both sides of the existing structural beam 2;

[0051] Step S40, installing the fixing plate 52 and the first fastening nut 53 of the arch hinge support 5;

[0052] Step S50, sequentially installing the thrust support 6 and the second fastening nut 67 at the arch thrust support 6, and preliminarily adjusting the position of the thrust nut 64;

[0053] Step S60 , hoisting the supporting arch structure 1 , and connecting it to the hinge support 5 and the thrust support 6 through high-strength bolts 7 .

[0054] Step S70, adjusting the position of the thrust nut 64 to adjust the internal force of the arch supporting structure 1 so as to reach the designed thrust, and tightening the locking nut 65.

[0055] If necessary, equipment pipelines 8 are installed in the gaps between the supporting arch structure 1 and the existing structural beams 2, and between the supporting arch structure 1 and the existing columns.

[0056] In the utility model, the supporting arch structure 1 is mainly subjected to axial force, and combined with the use of high-strength steel, it has the characteristics of high bearing capacity, and can be applied to bridge structures, and can also be used for beam reinforcement in housing construction projects.

[0057] The utility model does not affect building functions such as parking in the basement of the building during construction, the functional interruption time during construction is short, and the dry method operation accounts for a large proportion of the workload.

[0058] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0059] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prestressed arch supported beam reinforcement system, characterized in that: Includes existing structural beams, two existing structural columns and supporting arch structures; The two ends of the existing structural beam are respectively connected to the existing structural columns on both sides; The supporting arch structure is located at the lower part of the existing structural beam, one end of the supporting arch structure is connected to one of the existing structural columns through a hinged support, and the other end of the supporting arch structure is connected to another existing structural column through a thrust support; the arch top of the supporting arch structure is supported at the mid-span position of the bottom of the existing structural beam; A sliding plate is arranged between the top of the supporting arch structure and the bottom of the existing structural beam, and the supporting arch structure can slide relative to the lower surface of the sliding plate.

2. The beam reinforcement system according to claim 1, characterized in that: The existing structural beams and existing structural columns are both concrete structures.

3. The beam reinforcement system according to claim 1, characterized in that: The sliding plate can be a polytetrafluoroethylene plate; the sliding plate is glued and fixed to the mid-span position of the bottom of the existing structural beam.

4. The beam reinforcement system according to claim 1, characterized in that: The supporting arch structure is one of an H-shaped steel beam, a box-section steel tube beam and a box-section steel tube concrete beam.

5. The beam reinforcement system according to claim 1, characterized in that: The hinged support includes a fixing plate, which is connected to the existing structural column via a first anchor bolt, and the first anchor bolt is adapted to a first fastening nut; the fixing plate is connected to the supporting arch structure via a high-strength bolt.

6. The beam reinforcement system according to claim 5, characterized in that: The thrust bearing includes an inner plate, an outer plate, a steel rod, a thrust nut and a locking nut. The inner plate is vertically fitted and connected to the existing structural column; the outer plate and the inner plate are arranged opposite and parallel to each other, and the two are connected by at least two steel rods; thrust nuts and locking nuts threadedly connected to the steel rods are respectively provided on both sides of the outer plate; the lower end of the supporting arch structure is connected to the outer plate by high-strength bolts.

7. The beam reinforcement system according to claim 6, characterized in that: The existing structural beams and existing structural columns are all steel structures.

8. The beam reinforcement system according to claim 6, characterized in that: The hinged support also includes a first mounting plate and a first screw rod; the first mounting plates are respectively arranged on the sides of the existing structural columns and vertically fitted, and the first mounting plate is connected to the fixed plate through the first screw rod; a first fastening nut is provided on the outer side of the first screw rod.

9. The beam reinforcement system according to claim 8, characterized in that: The thrust bearing is also provided with a second mounting plate, which is vertically fitted with the other side surface of the existing structural column. The inner plate and the second mounting plate are connected by a second screw rod and fixed by a second fastening nut.

10. The beam reinforcement system according to claim 9, characterized in that: The first screw rod and the second screw rod are both steel structures.

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