Reinforcing and maintaining structure for ancient gallery bridge

Abstract

The utility model discloses an ancient gallery bridge reinforcing and maintaining structure, which relates to the technical field of ancient building wood structure reinforcing and comprises a cross beam, a vertical beam, a first supporting piece and a second supporting piece, the first supporting piece is composed of two first connecting plates and a second connecting plate, the two first connecting plates are embedded in the upper side of the cross beam through the upper buckling grooves, and the second connecting plate is fixed to the front side of the vertical beam; the second supporting piece is composed of two first butt joint plates and a second butt joint plate, the two first butt joint plates are embedded in the lower side of the cross beam through the lower buckling grooves, and the second butt joint plate is fixed to the rear side of the vertical beam. The first connecting plate and the first butt joint plate are engaged through a multi-stage mortise and tenon joint structure. According to the design, through up-down two-way embedding and tenon-and-mortise cooperative force transmission, bending deformation of the cross beam and shear slippage of the joint are effectively restrained, the load resistance is improved, meanwhile, detachable metal components are adopted, historical style protection and maintenance convenience of an ancient bridge are considered, and the method is suitable for lossless reinforcement and repair of the wood gallery bridge joint.

Description

TECHNICAL FIELD

[0001] The utility model relates to ancient building wood structure reinforcing technical field, especially a kind of ancient gallery bridge reinforcing maintenance structure. BACKGROUND

[0002] Wooden ancient bridge as the building heritage of long history, its construction technology embodies the wisdom of ancient wood structure engineering. Wooden bridge built in early stage generally adopts wood beam frame system, and among them, triangular truss is taken as core bearing structure.

[0003] As shown in Figure 1 The wooden triangular truss symmetrically arranged on the two sides of bridge is connected by horizontal beam and vertical beam through mortise and tenon joint to form main frame, and this structure exposes significant technical defects in long-term service process: firstly, wooden material itself has the characteristics of low natural strength and poor durability, which leads to that the overall bearing capacity of bridge is difficult to meet modern use demand;Secondly, mortise and tenon joint as the key force transmission part is prone to creep deformation under sustained load, especially at the intersection of horizontal beam and vertical beam, the compression deformation of wood fiber can cause node relaxation and geometric instability. SUMMARY

[0004] The utility model discloses a kind of ancient gallery bridge reinforcing maintenance structure, it has the advantage of significantly improving node stiffness and shear strength while preserving ancient bridge traditional style.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A kind of ancient gallery bridge reinforcing maintenance structure, including horizontal beam and vertical beam, further comprising:

[0007] First supporting member, including first connecting plate and second connecting plate, the first connecting plate is equipped with two, and is connected to the horizontal beam, and the upper buckle groove embedded to the upper side of the horizontal beam is formed between two first connecting plates;The second connecting plate is connected to the vertical beam;

[0008] Second supporting member, including first butt plate and second butt plate, the first butt plate is equipped with two, and is connected to the horizontal beam, and the lower buckle groove embedded to the lower side of the horizontal beam is formed between two first butt plates;The second butt plate is connected to the vertical beam;

[0009] Mortise and tenon structure is respectively arranged on first connecting plate and first butt plate, so that first connecting plate and first butt plate form mortise and tenon connection.

[0010] Further provided: the mortise and tenon structure includes first recess provided on the first connecting plate and first protrusion provided on first butt plate.

[0011] Further arrangement: the mortise and tenon structure further comprises a second groove on the first protrusion and a second protrusion on the first groove.

[0012] Further arrangement: the first connecting plate and the first abutting plate have at least one abutting surface, and the abutting surface is arranged in an inclined manner.

[0013] Further arrangement: the first connecting plate and the first abutting plate have at least one abutting surface, and the abutting surface is arranged in an inclined manner.

[0014] Further arrangement: the first connecting plate and the first abutting plate have at least one abutting surface, and the abutting surface is arranged in an inclined manner.

[0015] Further arrangement: the first connecting plate and the first abutting plate have at least one abutting surface, and the abutting surface is arranged in an inclined manner.

[0016] Further arrangement: the first connecting plate and the first abutting plate have at least one abutting surface, and the abutting surface is arranged in an inclined manner.

[0017] In summary, the utility model has the following beneficial effects:

[0018] First, in the utility model, the upper buckle groove of the first supporting piece is embedded on the upper side of the cross beam, and the lower buckle groove of the second supporting piece is embedded on the lower side of the cross beam to form bidirectional embedding, thereby constituting full-section wrapping type connection. The upper and lower clamping design can effectively inhibit the bending deformation of the cross beam under vertical load, limit the lateral displacement, and significantly improve the shear resistance of the node area.

[0019] Second, in the utility model, the first connecting plate and the second connecting plate of the vertical beam, and the second abutting plate and the vertical beam form double rigid connection, so that the single force transmission direction (longitudinal direction) of the traditional mortise and tenon joint is expanded into a multi-directional force transmission network. The load can be dispersed and transmitted to the upper and lower extending sections of the vertical beam through the connecting plate, thereby reducing the concentrated stress of the original wooden mortise and tenon joint and avoiding local crushing damage.

[0020] Third, in the utility model, the metal mortise and tenon connection has higher compressive strength and creep resistance than the wooden mortise and tenon, can withstand larger cyclic load without deformation. Moreover, the split type mortise and tenon allows fine adjustment of the installation position, adapts to the size deviation caused by the shrinkage deformation of the wooden bridge. The mortise and tenon connection can be disassembled and reassembled, avoids the damage to the original component caused by the traditional whole replacement process, and meets the "minimum intervention" repair requirement.

[0021] Fourthly, in the utility model, the first supporting piece and the second supporting piece are made of metal material, form the metal mortise and tenon structure, and the metal mortise and tenon joint can absorb part of vibration energy through elastic deformation in the force transmission process, forming the energy dissipation mechanism similar to "elastic hinge". The flexible connection characteristic can relieve the stress concentration problem of the wooden component caused by the sudden change of rigidity, and prolong the structural fatigue life. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a background technical drawing;

[0023] Figure 2 is a structural schematic view of an ancient gallery bridge reinforcing and repairing structure;

[0024] Figure 3 is a three-dimensional structural schematic view of the first supporting piece and the second supporting piece;

[0025] Figure 4 is a front view of the first supporting piece and the second supporting piece.

[0026] In the drawing, 100, triangular truss; 101, cross beam; 102, vertical beam;

[0027] 210, first supporting piece; 211, first connecting plate; 212, second connecting plate; 213, first recess; 214, first protrusion;

[0028] 220, second supporting piece; 221, first butt joint plate; 222, second butt joint plate; 223, second protrusion; 224, second recess;

[0029] 300, reinforcing rib; 400, fastener; 500, abutting surface. DETAILED DESCRIPTION

[0030] The utility model will be further described in detail below in combination with the drawings.

[0031] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to having a particular orientation, being constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0032] An ancient gallery bridge reinforcing and repairing structure, like Figure 2 and Figure 3As shown, it comprises a crossbeam 101 and a vertical beam 102, the crossbeam 101 as a horizontal load-bearing component, and the vertical beam 102 fixed vertically, forming a cross connection through a wooden mortise and tenon joint.

[0033] It also comprises a first support 210 and a second support 220. The first support 210 and the second support 220 are both made of metal materials. Specifically, the first support 210 and the second support 220 are both made of Q355B steel plates with a yield strength of ≥355 MPa.

[0034] As shown in Figure 2 , Figure 3 and Figure 4 , the first support 210 comprises a first connecting plate 211 and a second connecting plate 212. The first connecting plate 211 is provided with two, symmetrically distributed on both sides of the upper surface of the crossbeam 101. The inner side of the two first connecting plates 211 forms an upper clamping groove, the groove opening is downwardly clamped on the upper surface of the crossbeam 101, and the groove width matches the top surface of the crossbeam 101 with a 1-2 millimeter gap reserved. The second connecting plate 212 is vertically welded to the outer side end of the first connecting plate 211, and is fixed by face contact with the vertical beam 102 along the side surface of the vertical beam 102 through the fastener 400.

[0035] The second support 220 comprises a first abutting plate 221 and a second abutting plate 222. The first abutting plate 221 is provided with two, and the inner side of the two first abutting plates 221 forms a lower clamping groove, the groove opening upwardly clamping the lower surface of the crossbeam 101. The second abutting plate 222 is welded to the outer side of the first abutting plate 221 and is fixed along the side surface of the vertical beam 102.

[0036] Through the above scheme, the upper clamping groove and the lower clamping groove jointly wrap the full cross section of the crossbeam 101, limiting its up and down vibration; the second connecting plate 212 and the second abutting plate 222 apply bidirectional clamping force from the front and rear sides of the vertical beam 102, suppressing lateral displacement. This scheme uses a three-dimensional wrapping connection and a hierarchical mortise and tenon force transmission system, which significantly improves the node stiffness and shear strength while preserving the traditional style of the ancient bridge. All metal parts and wooden parts are connected by detachable bolts, meeting the reversible repair principle of cultural relic protection.

[0037] On the basis of the above-mentioned embodiments, as a further defined embodiment, as shown in Figure 4As shown, the mortise and tenon structure is arranged on the first connecting plate 211 and the first abutting plate 221 respectively, so that the first connecting plate 211 and the first abutting plate 221 form a mortise and tenon connection. Specifically, the mortise and tenon structure includes a first groove 213 arranged on the first connecting plate 211 and a first protrusion 214 arranged on the first abutting plate 221. The mortise and tenon structure adopts a hierarchical engagement design. The first groove 213 is arranged on the inner side of the lower end of the first connecting plate 211, and the groove depth direction is vertically downward; the first protrusion 214 is arranged on the outer side of the upper end of the first abutting plate 221, and the protrusion direction is vertically upward, and the two form a vertical plug-in cooperation.

[0038] The mortise and tenon structure further includes a second groove 224 on the first protrusion 214 and a second protrusion 223 on the first groove 213. The second groove 224 is located at the top center of the first protrusion 214 and is an upward opening guide groove; the second protrusion 223 is arranged at the bottom center of the first groove 213 and forms a horizontal wedge tight fit with the second groove 224.

[0039] On the basis of the above-mentioned embodiments, as further defined embodiments, as shown in Figure 4 The first connecting plate 211 and the first abutting plate 221 have at least one abutting surface 500, which is arranged obliquely. The contact surface of the first connecting plate 211 and the first abutting plate 221 is designed as a 5°-8° inclined abutting surface 500, which is gradually expanded outward from the center line of the cross beam 101, forming a self-locking inclined surface to prevent the mortise and tenon from coming out.

[0040] On the basis of the above-mentioned embodiments, as further defined embodiments, as shown in Figure 3 and Figure 4 The first connecting plate 211 and the first abutting plate 221 are connected by arranging fasteners 400 between the first connecting plate 211 and the cross beam 101, between the first abutting plate 221 and the cross beam 101, and between the second connecting plate 212 and the vertical beam 102, and between the second abutting plate 222 and the vertical beam 102. The fasteners 400 on the first connecting plate 211 and the first abutting plate 221 are distributed on at least the first protrusion 214 and the second protrusion 223. The fasteners 400 in this embodiment are preferably bolts. The bolts are arranged in the mortise and tenon engagement critical point of the first protrusion 214 and the second protrusion 223, forming a "ring type" anchoring system. When the mortise and tenon joint is subjected to vertical load, the circumferential constraint generated by the bolt pre-tightening force can convert the longitudinal compressive stress of wood fibers into transverse compressive stress, so that the single-point pressure of the original wooden mortise and tenon becomes a surface area pressure, and the node bearing capacity is improved.

[0041] On the basis of the above-mentioned embodiments, as further defined embodiments, as shown in Figure 3 and Figure 4As shown, the reinforcing rib 300 is arranged between the second connecting plate 212 and the upper groove and / or between the second butt plate 222 and the lower groove. Specifically, the reinforcing rib 300 is a welded triangular reinforcing rib 300, the thickness of the rib plate is 8 mm, and the right-angle edges are welded with the back of the second connecting plate 212 and the side plate of the upper buckle groove respectively; the same specification reinforcing rib 300 is welded between the lower buckle groove and the second butt plate 222, forming a bidirectional shear support.

[0042] The above-mentioned embodiments are only explanations of the present application, and are not limitations of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the present application, they are protected by the Patent Law.

Claims

1. A structure for reinforcing and repairing an ancient gallery bridge, comprising a cross beam and a vertical beam, characterized in that, Also comprising: a first supporting member (210) comprising a first connecting plate (211) and a second connecting plate (212), the first connecting plate (211) is provided with two and connected to the cross beam (101), the two first connecting plates (211) form an upper buckle groove embedded on the upper side of the cross beam (101); the second connecting plate (212) is connected to the vertical beam (102); a second supporting member (220) comprising a first butt plate (221) and a second butt plate (222), the first butt plate (221) is provided with two and connected to the cross beam (101), the two first butt plates (221) form a lower buckle groove embedded on the lower side of the cross beam (101); the second butt plate (222) is connected to the vertical beam (102); a mortise and tenon structure is respectively arranged on the first connecting plate (211) and the first butt plate (221) to form a mortise and tenon connection.

2. The ancient gallery bridge reinforcing and repairing structure according to claim 1, characterized in that: The mortise and tenon structure comprises a first groove (213) arranged on the first connecting plate (211) and a first protrusion (214) arranged on the first butt plate (221).

3. The ancient gallery bridge reinforcing and repairing structure according to claim 2, characterized in that: The mortise and tenon structure further comprises a second groove (224) on the first protrusion (214) and a second protrusion (223) on the first groove (213).

4. The ancient gallery bridge reinforcing and repairing structure according to claim 2, characterized in that: The first connecting plate (211) and the first butt plate (221) have at least one abutting surface (500), which is arranged obliquely.

5. The ancient gallery bridge reinforcing and repairing structure according to claim 3, characterized in that: The first connecting plate (211) and the cross beam (101), the first butt plate (221) and the cross beam (101), the second connecting plate (212) and the vertical beam (102), and the second butt plate (222) and the vertical beam (102) are connected by fasteners (400).

6. The ancient gallery bridge reinforcing and repairing structure according to claim 5, characterized in that: The fasteners (400) on the first connecting plate (211) and the first butt plate (221) are distributed on the first protrusion (214) and the second protrusion (223) at least.

7. The ancient gallery bridge reinforcing and repairing structure according to any one of claims 1-6, characterized in that: A reinforcing rib (300) is arranged between the second connecting plate (212) and the upper groove and / or between the second butt plate (222) and the lower groove.

8. The ancient gallery bridge reinforcing and repairing structure according to any one of claims 1-6, characterized in that: The first supporting member (210) and the second supporting member (220) are made of metal material.

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