A concrete block top pressing structure for a building masonry

Abstract

The utility model discloses a kind of building masonry top concrete block top tight structure, belong to building construction technical field, prefabricated concrete block, be set in the gap between the top of masonry wall and upper structure beam slab;Including top tight subassembly, top tight subassembly includes upper fixed part, lower fixed part, screw rod and nut;Upper fixed part is fixedly set in the lower surface of upper structure beam slab;Lower fixed part is embedded in prefabricated concrete block;The upper end of screw rod is connected with upper fixed part, its lower end is sequentially passed through lower fixed part and washer from top to bottom and is connected with nut by screw thread connection.The utility model sets embedded lower fixed part in block, and utilize screw rod nut and upper structure beam slab connection, by the operating mode of screwing nut from lower part, entire concrete block can be driven to generate top tight force downwards, to effectively eliminate the gap of masonry wall top.This structure places all fastening operation space in block lateral exterior, convenient operation, significantly improve construction efficiency and safety.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically a concrete block clamping structure for the top of building masonry. Background Technology

[0002] In the construction industry, masonry structures are widely used due to their readily available materials and ease of construction. However, due to factors such as material shrinkage, temperature deformation, and construction errors, gaps usually exist at the top between masonry walls and the upper reinforced concrete beams and slabs. If these gaps are not properly treated, they can lead to stress concentration at the top of the wall, becoming a weak point in the structure, affecting its integrity and load transfer, and may even cause common quality problems such as plaster cracking and water seepage.

[0003] To address the aforementioned problems, traditional construction methods often employ inclined bricklaying and compaction, or filling the gaps with fine aggregate concrete, mortar, or other materials. However, inclined bricklaying is cumbersome, requires highly skilled workers, and it's difficult to ensure uniform and reliable compaction. Simply filling with materials often fails to achieve true density and tightness, especially when the gap height is small, making filling difficult, prone to voids, and unable to effectively transfer loads. Therefore, there is an urgent need in this field for a simple, structurally sound, easily operable, and cost-effective compaction structure that can efficiently and reliably eliminate gaps at the top of masonry walls, ensuring the overall quality and safety of the building. Utility Model Content

[0004] To address the above problems, this utility model provides a concrete block clamping structure for the top of masonry structures, which solves the technical problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A precast concrete block clamping structure for masonry walls is disclosed, comprising a clamping assembly including an upper fixing member, a lower fixing member, a screw, and a nut. The upper fixing member is fixedly disposed on the lower surface of the upper structural beam. The lower fixing member is embedded in the precast concrete block. The upper end of the screw is connected to the upper fixing member, and its lower end passes through the lower fixing member and a washer from top to bottom before being threadedly connected to the nut. The washer and nut are located below the lower fixing member and to the side outside the precast concrete block.

[0006] As a further improvement to the above solution, the lower fixing component includes an anchor rod, which is pre-embedded in the precast concrete block. The upper end of the anchor rod is provided with a connecting lug, and the connecting lug has a light hole. The screw rod passes through the light hole of the connecting lug.

[0007] As a further improvement to the above solution, the upper fixing member is an internally threaded sleeve pre-embedded in the upper structural beam plate, and the upper end of the screw is screwed into the internally threaded sleeve.

[0008] As a further improvement to the above scheme, a mortar layer is laid between the contact surface of the precast concrete block and the masonry wall.

[0009] As a further improvement to the above solution, the washer is a spring washer or a flat washer.

[0010] As a further improvement to the above solution, the number of clamping components is multiple, and they are evenly spaced along the length of the precast concrete blocks.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a tightening structure for concrete blocks at the top of masonry structures. It features a lower fixing component embedded in the block and connected to the upper structural beams and slabs using screws and nuts. By tightening the nuts from the bottom, the entire concrete block is driven downwards to generate a tightening force, effectively eliminating gaps at the top of the masonry wall. This structure places all tightening operations on the outside side of the block, facilitating operation and significantly improving construction efficiency and safety.

[0012] 2. The anchor rod is pre-embedded inside the concrete block, and its bond with the concrete provides reliability. The smooth hole on the connecting lug is fitted with the screw rod with clearance, and only serves to guide and transmit force, so that the screw rod will not rotate when the nut is tightened, thus improving construction efficiency.

[0013] 3. As a standard embedded part, the internal threaded sleeve has high embedded reliability and can provide a stable and tough threaded connection interface; this connection method is easy to install.

[0014] 4. The mortar layer laid between the masonry wall and the concrete blocks can fill the micro-unevenness on the top surface of the masonry wall, ensure that the clamping force can be evenly distributed, and avoid stress concentration that could cause the blocks to crush. After hardening, the mortar layer is tightly bonded to both, which improves the overall stability and seismic performance of the structure.

[0015] 5. Using spring washers effectively prevents the nut from loosening under long-term vibration loads by utilizing its elasticity, ensuring the long-term stability of the tightening force. Using flat washers provides a larger contact area, distributing the tightening force of the nut more evenly across the surface of the connecting lug, preventing deformation or damage.

[0016] 6. By arranging multiple clamping components evenly at intervals along the length of the block, uniform distribution can be ensured, avoiding problems such as warping, cracking, or uneven installation caused by single-point force on the block. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation of this utility model.

[0018] Figure 2 This is a schematic diagram of the present invention.

[0019] In the diagram: 1. Precast concrete block; 2. Masonry wall; 3. Upper structural beam and slab; 4. Tightening assembly; 5. Mortar layer; 41. Upper fastener; 42. Lower fastener; 421. Connecting lug; 422. Anchor rod; 43. Screw rod; 44. Nut; 45. Washer. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to the embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0021] like Figure 1-2 As shown, the specific solution of this embodiment is as follows: a precast concrete block clamping structure for the top of a building masonry, comprising a precast concrete block 1, which is set in the gap between the top of the masonry wall 2 and the upper structural beam slab 3; including a clamping component 4, which includes an upper fixing member 41, a lower fixing member 42, a screw rod 43 and a nut 44; the upper fixing member 41 is fixedly set on the lower surface of the upper structural beam slab 3; the lower fixing member 42 is pre-embedded in the precast concrete block 1; the upper end of the screw rod 43 is connected to the upper fixing member 41, and its lower end passes through the lower fixing member 42 and the washer 45 from top to bottom and is threadedly connected to the nut 44; the washer 45 and the nut 44 are located below the lower fixing member 42 and to the side outside of the precast concrete block 1. By screwing the nut 44 upward along the fully threaded screw 43 and pressing the washer 45, the washer 45 then transmits the pressure to the lower surface of the lower fixing member 42, thereby driving the precast concrete block 1 downward to make it tightly against the top surface of the masonry wall 2 below.

[0022] As a preferred embodiment of the above, the lower fixing member 42 includes an anchor rod 422, which is pre-embedded in the precast concrete block 1. The upper end of the anchor rod 422 is provided with a connecting ear 421, and the connecting ear 421 is provided with a light hole; the screw 43 passes through the light hole of the connecting ear 421.

[0023] As a preferred embodiment of the above, the upper fixing member 41 is an internally threaded sleeve pre-embedded in the upper structural beam plate 3, and the upper end of the screw 43 is screwed into the internally threaded sleeve.

[0024] As a preferred embodiment of the above, a mortar layer 5 is laid between the contact surfaces of the precast concrete block 1 and the masonry wall 2.

[0025] As a preferred embodiment of the above, washer 45 is a spring washer or a flat washer.

[0026] As a preferred embodiment of the above, the number of clamping components 4 is multiple, and they are evenly arranged at intervals along the length of the precast concrete block 1.

[0027] This application describes a fixed screw rod and a rotating nut. When the nut 44 is tightened, the nut engages with the stationary screw rod 43 via threads, causing the nut to undergo an upward axial displacement along the screw rod axis. The upwardly moving nut 44 pushes against a washer 45, which then transmits the force to the lower surface of the connecting lug 421 of the lower fixing member 42. Since the lower fixing member 42 is integrally fixed to the precast concrete block 1 via an anchor rod 422, the upward thrust is entirely applied to the block.

[0028] According to Newton's third law, the fixed upper structural beam 3 applies a downward and equal-magnitude reaction force to the entire clamping system through the upper fixing member 41 and the screw 43. This reaction force ultimately manifests as a clamping force that drives the precast concrete block 1 to move downward, thereby firmly pressing it against the masonry wall 2 below and compacting the mortar layer 5 in the middle, ensuring uniform pressure diffusion, achieving tight filling of the gaps at the top of the masonry and effective load transfer.

[0029] The construction and operation process of this clamping structure is as follows: 1. Prefabrication and pre-embedded stage: Precast concrete blocks 1 are precast in the factory, and the anchor rods 422 of the lower fixing member 42 are pre-embedded in them before casting to ensure that the connecting lugs 421 are accurately located in the design position (usually protruding from the side of the block end).

[0030] When pouring the upper structure beams and slabs 3 on site, the upper fixing parts 41 (internal threaded sleeves) are pre-embedded in the corresponding positions in the template according to the design spacing.

[0031] 2. Installation and placement stage: After the masonry wall 2 is built to the design elevation, a layer of mortar 5 is laid on its top surface.

[0032] The precast concrete block 1 is hoisted and placed on the mortar layer 5.

[0033] 3. Screw installation and connection stage: Screw the upper end of the screw 43 into the upper fixing part 41 (internal threaded sleeve) pre-embedded in the upper structural beam 3, and tighten it. The lower end of the screw 43 hangs down naturally.

[0034] By adjusting the position of the horizontal fine-tuning block, the light hole of the connecting ear 421 is inserted into the hanging screw 43 from the side.

[0035] 4. Tightening Operation Stage: If not pre-installed, place washers 45 on the lower end of screw 43 and then tighten nuts 44.

[0036] The operator is positioned in an open space to the side of the precast concrete block 1 and uses a wrench or other tools to rotate nut 44 clockwise.

[0037] Nut 44 moves upward along the thread of screw 43, pressing the lower surface of washer 45 and connecting lug 421 in sequence.

[0038] The continuous tightening operation generates a huge clamping force, driving the entire precast concrete block 1 to move downward, uniformly compacting the mortar layer 5, and fully clamping it against the top surface of the masonry wall 2.

[0039] 5. Completion and Acceptance Phase: Tighten all nuts 44 of the clamping components 4 to the required torque as per design specifications.

[0040] The inspection confirmed that all the blocks had descended evenly and were firmly clamped in place.

[0041] After the mortar layer 5 hardens, it forms an integral whole with the masonry wall 2 and the precast concrete block 1, working together to complete the clamping process.

[0042] It should be noted that, in this document, the terms "including," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the present invention to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A concrete block clamping structure for the top of a masonry building, wherein precast concrete blocks (1) are disposed in the gap between the top of the masonry wall (2) and the upper structural beams and slabs (3); characterized in that, The assembly includes a clamping component (4), which includes an upper fixing member (41), a lower fixing member (42), a screw (43), and a nut (44). The upper fixing member (41) is fixedly installed on the lower surface of the upper structural beam (3). The lower fixing member (42) is embedded in the precast concrete block (1). The upper end of the screw (43) is connected to the upper fixing member (41), and its lower end passes through the lower fixing member (42) and the washer (45) from top to bottom and is threadedly connected to the nut (44). The washer (45) and the nut (44) are located below the lower fixing member (42) and to the side outside of the precast concrete block (1).

2. The concrete block clamping structure for the top of masonry as described in claim 1, characterized in that, The lower fixing component (42) includes an anchor rod (422), which is pre-embedded in the precast concrete block (1). The upper end of the anchor rod (422) is provided with a connecting ear (421), and a light hole is opened on the connecting ear (421). The screw (43) passes through the light hole of the connecting ear (421).

3. The concrete block clamping structure for the top of masonry as described in claim 1, characterized in that, The upper fixing member (41) is an internally threaded sleeve pre-embedded in the upper structural beam plate (3), and the upper end of the screw (43) is screwed into the internally threaded sleeve.

4. The concrete block clamping structure for the top of masonry as described in claim 1, characterized in that, A mortar layer (5) is laid between the contact surface of the precast concrete block (1) and the masonry wall (2).

5. The concrete block clamping structure for the top of masonry as described in claim 1, characterized in that, The washer (45) is a spring washer or a flat washer.

6. The concrete block clamping structure for the top of masonry as described in claim 1, characterized in that, The number of the clamping components (4) is multiple, and they are evenly arranged at intervals along the length direction of the precast concrete blocks (1).

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