Prestress reinforcing structure of strip stone floor slab building

Abstract

The utility model discloses a pre-stress reinforcing structure of a strip stone floor building in the technical field of stone building reinforcement, which comprises reinforcing plates and fastening clamping blocks, the reinforcing plates are bonded on the upper and lower surfaces of strip stone plates, and tension is applied to the reinforcing plates, so that the strip stone plates form a pre-stress integral structure, the structural strength of the strip stone plates is increased, and the service life of the strip stone plates is prolonged. The device is easy and convenient to construct and short in construction period, the economical efficiency and durability of the reinforcing structure are good, and the bearing capacity of the floor slab can be effectively improved through the structure; the device does not need to drill holes in the slabstone plate of a building, and lossless reinforcement is conducted on the slabstone plate of an original structure; the technical requirement is low, in-situ sampling for detecting the actual strength of the strip stone is not needed, the reinforcing position does not need to be delimited, the device is economical and convenient, the reinforcing plate can be directly used as a bearing capacity design value of the strip stone plate, and the bearing capacity of the original strip stone plate structure can be used as safety reserve.

Description

Technical Field

[0001] This utility model relates to the field of stone masonry building reinforcement technology, and in particular to a prestressed reinforcement structure for a strip stone floor slab building. Background Technology

[0002] Due to the abundance, high quality, low price, and durability of stone resources, early housing construction utilized locally sourced materials, with granite slabs or strips being used for floor slabs and roofs in a large number of buildings. Stone floor structures were mostly used in residential houses, but some were also used in public buildings.

[0003] While stone has obvious advantages, its disadvantages are also very apparent. As a building material, stone's mechanical behavior is similar to plain concrete, exhibiting strong compressive strength but weak tensile strength. Stone-structured houses, often characteristic of local architecture, frequently experience accidents involving roof slabs, interior floors, cantilevered balconies, and outdoor canopies, with the areas beneath these structures serving as common living spaces. Due to the heavy weight of stone and its brittle fracture characteristics, even minor cracks can rapidly develop, potentially leading to immediate structural damage and collapse. The short timeframe of this collapse leaves victims little time to react or escape, making it a potentially serious incident. Several stone-structured floor collapses have already occurred, posing a significant threat to property and lives.

[0004] There are still a large number of stone masonry buildings that exist today. It is of great significance to strengthen these buildings in an economical and reasonable way, preserve the existing structure, and improve their safety with a lower-cost structure.

[0005] Based on this, this utility model designs a prestressed reinforcement structure for stone slab buildings to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a prestressed reinforcement structure for paved stone floor buildings. This device is simple to construct, has a short construction period, and the reinforcement structure has good economy and durability. Moreover, this structure can effectively improve the load-bearing capacity of the floor slab. This device does not require drilling holes in the paved stone slabs of the building, and can perform non-destructive reinforcement of the paved stone slabs of the original structure. The technical requirements are low, there is no need to take in-situ samples to test the actual strength of the paved stone, and there is no need to define the reinforcement location. The economy and convenience of this device allow the reinforcement plate to be directly used as the design value of the load-bearing capacity for the paved stone slabs, and the load-bearing capacity of the original paved stone slab structure can be used as a safety reserve.

[0007] This utility model is implemented as follows: a prestressed reinforcement structure for a stone slab building, comprising:

[0008] Statues, masonry walls, reinforcing slabs, and fastening blocks;

[0009] The stone slabs are stone slabs that form floor slabs, and the masonry walls are vertical walls of the building;

[0010] Multiple stone slabs are horizontally spanned between the two masonry walls. The multiple stone slabs are tightly spliced ​​together to form a complete floor slab. Installation grooves are opened inside the masonry walls, and the two ends of the stone slabs are inserted into the masonry walls from the inside out.

[0011] Installation slots are provided on the outer walls of the masonry walls on both sides, and a fastening block is securely clamped in each installation slot;

[0012] The reinforcing plate is a flexible carbon fiber strip plate.

[0013] The fastening clamp is a groove-shaped clamp, and a fastening clamp is held at each end of the reinforcing plate. The reinforcing plate penetrates the masonry wall and is held stably by the fastening clamp. The reinforcing plate is tensioned by the fastening clamps at both ends.

[0014] Each of the stone slabs has a reinforcing plate on its upper and lower sides, and the two reinforcing plates are tensioned to the upper and lower sides of the same stone slab by the same fastening clamp.

[0015] Furthermore, the stone slabs and the reinforcing plate are bonded together with adhesive;

[0016] The outer surface of the reinforcing plate is also coated with fire-retardant paint.

[0017] Furthermore, the mounting groove is opened on the outside of the masonry wall, and the vertical height h of the fastening clamp is greater than the thickness d of the flagstone slab.

[0018] Furthermore, the clamping block and the reinforcing plate are fixed together by adhesive.

[0019] The fastening clamp is embedded inside the mounting groove, and the outer side of the fastening clamp is flush with the outer wall of the masonry wall.

[0020] The beneficial effects of this utility model are: 1. This utility model excavates an installation groove on the outer wall surface of the masonry wall and installs fastening blocks. The fastening blocks are used to tension the reinforcing plate, so that it has tension, thereby providing stronger load-bearing capacity to the stone slab and achieving a better reinforcement effect on the stone slab.

[0021] 2. This device adds reinforcing plates to both the top and bottom of the flagstone slab, and forms an overall tension through the two layers of reinforcing plates, creating an integral structure with the flagstone slab. Furthermore, it forms a prestressed structure through tensioning, resulting in better structural strength and stronger load-bearing capacity. Moreover, the construction method is simple, the material laying is convenient, and the cost is low, making it particularly suitable for the reinforcement of old buildings. Using this device to reinforce old buildings requires low technical skills, has strong durability, and does not need to consider whether the building is dilapidated. Old buildings of all periods can use this device for reinforcement. After reinforcement, it can effectively improve the structural strength, and the horizontal flagstone slab is not damaged throughout the process, completely avoiding the chance of initial cracks appearing in the stone structure.

[0022] 3. This device uses carbon fiber plates with high toughness as reinforcement plates. These carbon fiber plates are tough and very difficult to break. Even if the stone slab floor cracks, the reinforcement plates can provide some support for a period of time, preventing the stone floor from collapsing immediately and providing more escape time for personnel to transfer and take shelter. Moreover, the puncture wounds from broken stones are transformed into crush injuries from the overall reinforcement plates, which can effectively reduce the degree of injury to people below from being hit by broken stone slabs. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a top view of the structure of this utility model;

[0026] Figure 3 This is a schematic cross-sectional view of the structure of a single stone slab and a reinforcing plate in this utility model.

[0027] Figure 4 This is a schematic diagram of the mounting groove structure of this utility model;

[0028] Figure 5 This is a front view of the outer wall of the masonry wall of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1-Stone slab, 2-Masonry wall, 21-Installation groove, 3-Reinforcing plate, 4-Fastening clamp. Detailed Implementation

[0031] Please see Figures 1 to 5 As shown, this utility model provides a prestressed reinforcement structure for a stone slab building. To better understand the above technical solution, the following will describe the above technical solution in detail with reference to the accompanying drawings and specific embodiments.

[0032] In a specific embodiment of the technical solution of this utility model:

[0033] It includes 1 stone slabs, 2 masonry walls, 3 reinforcing plates, and 4 fastening blocks;

[0034] Stone slab 1 refers to the stone slabs that form the floor slab, and masonry wall 2 refers to the vertical walls of the building;

[0035] Multiple stone slabs 1 are horizontally spanned between two masonry walls 2. The multiple stone slabs 1 are tightly spliced ​​together to form a complete floor slab. Installation grooves 21 are opened inside the masonry walls 2, and the two ends of the stone slabs 1 are inserted into the masonry walls 2 from the inside to the outside.

[0036] Installation slots 21 are opened on the outer walls of the masonry walls 2 on both sides, and a fastening block 4 is stably clamped in each installation slot 21.

[0037] Reinforcing plate 3 is a flexible carbon fiber strip plate.

[0038] The fastening clamp 4 is a groove-shaped clamp with a groove on the inner side. It is engaged with the stone slab 1 through the groove. Each end of the reinforcing plate 3 is clamped with a fastening clamp 4. The reinforcing plate 3 penetrates the masonry wall 2 and is held stably by the fastening clamp 4. The reinforcing plate 3 below the stone slab 1 is subjected to pre-tension through the fastening clamp 4 at both ends; while the reinforcing plate 3 above the stone slab 1 plays a fixing role.

[0039] After the reinforcing plate 3 is tensioned, the fastening clamp 4 is then fixed to the reinforcing plate 3 with steel adhesive to ensure that the reinforcing plate 3 forms a tension pre-tightening at the top and bottom of the stone slab 1; the stone slab 1 and the reinforcing plate 3 are bonded together with adhesive.

[0040] The outer surface of the reinforcing plate 3 is also coated with fire-retardant paint. The number and width of the reinforcing plate 3 are determined according to the tension required by the actual construction measurement to achieve the purpose of reinforcing the stone slab 1.

[0041] The fastening clamp 4 is embedded inside the mounting groove 21, and the outer side of the fastening clamp 4 is flush with the outer wall of the masonry wall 2. The mounting groove 21 has an opening on the outer side of the masonry wall 2, and the vertical height h of the fastening clamp 4 is greater than the thickness d of the flagstone slab 1. This ensures that the openings on both the upper and lower sides of the fastening clamp 4 are above or below the flagstone slab 1, facilitating the passage of the reinforcing plate 3 while avoiding interference or obstruction. Figure 5 As shown, this is the front of the mounting groove 21, which is the outside of the masonry wall 2. The mounting groove 21 is only open on the outside of the masonry wall 2. The fastening clamp 4 is installed on the outer wall of the masonry wall 2, and then the reinforcing plate 3 is tightened on the fastening clamp 4, so that the reinforcing plate 3 forms tension on the surface of the stone slab 1.

[0042] Each stone slab 1 has a reinforcing plate 3 on both its top and bottom sides. The two reinforcing plates 3 are tensioned to the top and bottom sides of the same stone slab 1 by the same fastening block 4. The fastening block 4 is a steel plate with openings on its top and bottom sides, forming a U-shaped interlocking structure. The openings on the top and bottom sides are horizontally positioned. The openings allow the reinforcing plates 3 to pass through the outside of the masonry wall 2, and also allow the reinforcing plates 3 to be clamped to the fastening block 4 to form an integral load-bearing structure. This facilitates the operation and application of force by the tensioning equipment to the reinforcing plates 3, which simply pass through the fastening block 4.

[0043] It should be noted that:

[0044] 1. The flagstone slab 1 is a structure consisting of multiple long flagstone slabs spanning across the wall, forming a beam structure. Its structure is sturdy and strong, but it is prone to cracking. There are some current reinforcement methods, some of which use carbon fiber cloth for covering. Carbon fiber cloth is relatively soft and easier to lay. However, the construction quality of carbon fiber cloth reinforcement is not easy to control. The cloth is too soft and is prone to curling at the edges. It is easy to bulge when pressing, and the surface is prone to wrinkling. Therefore, the original flagstone slab 1 floor base surface of the building needs to be strictly leveled. The strength of multiple layers of carbon cloth will be reduced. A larger area needs to be covered when pasting, and the construction period is long. This device does not have these problems. The whole piece of tough carbon fiber plate is used as the reinforcement plate 3. It has good flatness and a high fault tolerance at the bottom. The requirements for the paving base surface are greatly reduced. Moreover, it is bonded to the flagstone slab 1 by adhesive, which has high integrity and strong adaptability.

[0045] 2. Some methods use steel plates and anchors for reinforcement through drilling. However, both steel plates and anchors need to be considered for corrosion and durability. Furthermore, drilling holes in the flagstone slabs (1) during installation can easily create initial defects by introducing cracks into the flagstones. This can cause defects in the originally intact flagstone slabs (1). Each additional hole drilled in the stone floor slabs (1) adds another initial point of cracking, significantly increasing the likelihood of later cracking. Moreover, the excessive weight of the steel plates adds a huge extra burden to the wall; if the floor collapses, the impact of the steel plates on people is even greater. This method is not suitable for reinforcing existing stone buildings. It does not require drilling into the horizontal floor slabs of existing buildings, effectively reducing the possibility of cracking in the stone slabs 1. It also adds a flexible carbon fiber reinforcement plate 3, which not only has good toughness and forms shear resistance, increasing the building's seismic resistance, but also has a small self-weight, which does not significantly affect the building's structural load. Moreover, because of its small self-weight, even if the building collapses, the damage will be less. It also has tensile strength, making cracks easier to detect and allowing sufficient time for evacuation. The reinforced structure is stronger and safer.

[0046] This utility model is completed through the following steps during construction:

[0047] Step 1: Lay out the layout and mark the positions of the carbon fiber boards based on the actual measured dimensions on site;

[0048] Step 2: According to the layout position, remove the floor slab plaster layer at the location where the reinforcement plate 3 needs to be placed, and grind both the upper and lower surfaces of the building horizontal floor slab assembled with the stone slab 3 to remove dust and impurities, so as to ensure direct contact between the carbon fiber reinforcement plate 3 and the stone slab 1, and ensure direct bonding. Grind and level any uneven areas on the upper and lower surfaces of the stone slab 1.

[0049] Step 3: Mark the mounting position of the reinforcing plate 3 on the outside of the masonry wall 2, and chisel away a portion of the masonry wall 2 at the mounting position to create an installation groove 21. The installation groove 21 is only open on the outer wall of the masonry wall 2 to facilitate the placement of the fastening clamp 4. The inside of the installation groove 21 should be as flat as possible.

[0050] Step 4: Prepare carbon plate adhesive and steel bonding adhesive; first install the fastening clamp 4, and use the steel bonding adhesive to firmly bond the fastening clamp 4 into the mounting groove 21, ensuring that the fastening clamp 4 is completely cured and shaped.

[0051] Step 5: Apply carbon fiber adhesive to the surface of the reinforcing plate 3 of the flat structure, and then paste the reinforcing plate 3 to the top and bottom planes of the stone slab 1. Install fastening clips 4 at both ends of the upper and lower reinforcing plates 3 to secure them tightly, ensuring that both ends of the reinforcing plate 3 extend into the installation groove 21 opened on the outer wall of the masonry wall 2.

[0052] Step 6: Before the carbon fiber adhesive between the reinforcing plate 3 and the flagstone slab 1 solidifies, install the tensioning equipment to tension the lower reinforcing plate 3 of the flagstone floor slab, so that the lower reinforcing plate 3 of the flagstone floor slab generates tension, thereby forming a prestressed integral floor slab structure between the reinforcing plate 3 and the flagstone slab 1. After tensioning, the reinforcing plate 3 and the fastening clamp 4 are also bonded together with adhesive.

[0053] Step 7: After the carbon fiber adhesive between the stone slab 1 and the upper and lower reinforcing plates 3 has cured and stabilized, and the adhesive between the reinforcing plates 3 and the fastening clamps 4 has also solidified, remove the tensioning equipment of the reinforcing plates 3.

[0054] Step 8: Fill and restore the partially removed installation groove 21 on the outer wall of the masonry wall 2 with cement mortar; and apply fireproof coating to the surface of the reinforcing plate 3 for protection; complete the installation.

[0055] The "up and down" of this device refers to the vertical direction of the building, and "inside and outside" refers to the inside and outside of the reinforced room. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0056] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A prestressed reinforcement structure of a stone strip floor building, characterized by, The utility model relates to a building structure, including: Slab (1), masonry wall (2), reinforcing plate (3) and fastening clamp (4); The slab (1) is stone strip with floor, the masonry wall (2) is vertical wall of building; Multiple slab (1) is horizontally arranged between two masonry wall (2), and multiple slab (1) is tightly spliced as complete floor, the masonry wall (2) is provided with installation groove (21), and both ends of slab (1) are inserted in the masonry wall (2) from inside to outside; The installation groove (21) is provided on the outer wall of both sides of masonry wall (2), and one fastening clamp (4) is stably clamped in each installation groove (21); The reinforcing plate (3) is flexible carbon fiber long strip plate, The fastening clamp (4) is clamping block with recess on the inner side, and each end of reinforcing plate (3) is clamped with one fastening clamp (4), and slab (1) is butted in the recess of fastening clamp (4), and reinforcing plate (3) penetrates masonry wall (2) and is clamped with fastening clamp (4), and reinforcing plate (3) is clamped and tensioned through both ends of fastening clamp (4); Each slab (1) is provided with one reinforcing plate (3) on the upper and lower surfaces, and two reinforcing plates (3) are tensioned on the upper and lower surfaces of the same slab (1) through the same fastening clamp (4).

2. A pre-stressed reinforced structure of a stone slab building according to claim 1, characterized in that: The slab (1) and reinforcing plate (3) are bonded through adhesive; The outer surface of reinforcing plate (3) is also coated with fire retardant paint.

3. A pre-stressed reinforced structure of a stone slab building according to claim 1, characterized in that: The installation groove (21) is opened on the outer side of masonry wall (2), and the vertical height h of fastening clamp (4) is greater than the thickness d of slab (1).

4. A pre-stressed reinforced structure of a stone slab building according to claim 1, characterized in that: The fastening clamp (4) and reinforcing plate (3) are fixed through steel adhesive; The fastening clamp (4) is embedded in the installation groove (21), and the outer side of fastening clamp (4) is flush with the outer wall of masonry wall (2).

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