A trapezoidal truss composite ribbed hollow floor slab
Patent Information
- Application Number
- CN202522133361.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-10-09
AI Technical Summary
不合理的减重模块布局，尤其是在受力关键区域的过度减重，可能导致楼板整体承载性能的非预期降低，甚至影响结构的长期稳定性和安全性，从而限制了减重效果的进一步提升
[0012]本实用新型的有益效果是：通过梯形桁架组合肋两两成组布置，中间间隔位置放置纵向钢筋笼，并与横向钢筋笼交错绑扎固定，减重块规律分布，减重块位于各组梯形桁架组合肋之间，各减重块的两侧开设有限位槽，各限位槽内紧贴有对应的梯形桁架组合肋，该结构优化钢筋笼、梯形桁架组合肋和减重块的布局，不仅能有效减轻结构自重，实现了轻量化设计，有效防止其在施工中移位及上浮，还能显著增强了楼板的整体承载性能。
Smart Images
Figure CN224705365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building floor slab technology, and in particular to a trapezoidal truss combined ribbed hollow floor slab. Background Technology
[0002] However, current mainstream prefabricated floor slabs, such as composite slabs, still face some pressing technical challenges when applied to hollow core slabs. A core issue lies in their inherently large self-weight. To meet structural load-bearing and transportation / hoisting requirements, existing prefabricated floor slabs often need to be designed with relatively thick cross-sections. This increased self-weight not only leads to higher material consumption but also places higher demands on building foundations, frame structures, and hoisting equipment, indirectly increasing the overall project cost.
[0003] To address this issue, the industry has generally attempted to integrate weight-reducing modules into prefabricated floor slabs. However, existing technologies face multiple challenges in integrating these modules: First, the existing design of weight-reduction modules often lacks refined and systematic consideration. An unreasonable layout of weight-reduction modules, especially excessive weight reduction in critical stress areas, may lead to an unexpected decrease in the overall load-bearing capacity of the floor slab, and even affect the long-term stability and safety of the structure, thus limiting further improvement in weight reduction effects.
[0004] A more critical and widespread problem is that during concrete pouring, the weight-reducing modules are prone to floating due to their typically lower density than concrete and the effects of concrete vibration. This floating causes the modules to deviate from their intended positions, resulting in uneven distribution of the weight-reducing cavities within the floor slab, which in turn affects the effective cross-sectional dimensions, force transmission path, and overall load-bearing capacity of the floor slab. To prevent the weight-reducing modules from floating, existing technologies often require additional fixing measures, such as adding complex supports or applying extra weights to the modules. This undoubtedly increases the complexity of the prefabrication process, material consumption, and production costs, while also extending the prefabrication cycle.
[0005] In summary, existing prefabricated weight-reducing floor slab technologies still have significant room for improvement in reducing self-weight, optimizing load-bearing capacity, and preventing the weight-reducing modules from floating. There is an urgent need for a new type of prefabricated weight-reducing floor slab that can effectively reduce the floor slab's self-weight while ensuring or improving its load-bearing capacity, simplifying the production process, effectively solving the problem of weight-reducing modules floating, and reducing the number of on-site supports, thereby comprehensively improving the construction efficiency, economy, and sustainable development level of prefabricated floor slabs. Utility Model Content
[0006] The purpose of this utility model is to overcome the existing defects and provide a trapezoidal truss combined ribbed hollow floor slab with reasonable distribution of weight reduction modules, which can improve the overall load-bearing capacity of the floor slab and prevent the weight reduction modules from floating.
[0007] The technical solution to achieve the above objective is: a trapezoidal truss composite ribbed hollow floor slab, comprising a precast base slab, wherein multiple sets of parallel trapezoidal truss composite ribs are uniformly arranged on the precast base slab, each set of trapezoidal truss composite ribs is composed of two trapezoidal truss composite ribs with a certain distance between them, a first steel cage is tied between the two trapezoidal truss composite ribs in each set, multiple second steel cages are uniformly tied to each first steel cage, each first steel cage and each second steel cage are perpendicularly distributed, and a weight-reducing block is installed in the area where each first steel cage and each second steel cage intersects.
[0008] Preferably, the weight-reducing blocks are located between the trapezoidal truss combination ribs, and each weight-reducing block has a limiting groove on both sides, with the corresponding trapezoidal truss combination rib tightly attached to each limiting groove.
[0009] Preferably, the trapezoidal truss assembly rib is composed of rib plates and truss bars, and each of the limiting grooves is in close contact with the rib plate.
[0010] Preferably, each of the second steel cages is in contact with the corresponding weight-reducing block.
[0011] Preferably, concrete is poured on top of the precast base slab.
[0012] The beneficial effects of this utility model are as follows: by arranging trapezoidal truss composite ribs in pairs, placing longitudinal steel cages at intervals in the middle, and binding them alternately with transverse steel cages, and regularly distributing weight-reducing blocks between each group of trapezoidal truss composite ribs, with limiting grooves on both sides of each weight-reducing block, and corresponding trapezoidal truss composite ribs tightly attached to each limiting groove, this structure optimizes the layout of the steel cages, trapezoidal truss composite ribs, and weight-reducing blocks. This not only effectively reduces the self-weight of the structure and achieves lightweight design, effectively preventing displacement and floating during construction, but also significantly enhances the overall load-bearing capacity of the floor slab. Attached Figure Description
[0013] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of this utility model; Figure 3 This is a front view of the present invention.
[0014] In the diagram: 1. Precast base plate; 2. Trapezoidal truss composite rib; 3. First reinforcing cage; 4. Second reinforcing cage; 5. Weight reduction block. Detailed Implementation
[0015] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] like Figure 1-3 As shown, a trapezoidal truss composite ribbed hollow floor slab includes a precast base slab 1, multiple sets of parallel trapezoidal truss composite ribs 2, multiple first steel cages 3, multiple second steel cages 4, and multiple weight-reducing blocks 5. This floor slab supports a large span, reduces the number of supports, effectively saves construction costs and improves installation efficiency. At the same time, it enhances the flexibility of spatial planning and the freedom of use, reduces the number of beams and columns in the main structure, saves building materials and overall construction costs, and provides more possibilities for modern architectural design and application.
[0018] Specifically, multiple sets of parallel trapezoidal truss ribs 2 are evenly arranged on the precast base slab 1. Each set of trapezoidal truss ribs 2 consists of two trapezoidal truss ribs 2 with a certain distance between them. A first steel cage 3 is tied between the two trapezoidal truss ribs 2 in each set. Multiple second steel cages 4 are evenly tied to each first steel cage 3. The first steel cage 3 and the second steel cage 4 are vertically distributed. During the factory prefabrication stage, the multiple first steel cages 3 and the multiple second steel cages 4 are tied together with the precast base slab 1 in an integrated manner, transforming traditional on-site high-altitude operations into standardized factory production. This significantly reduces the amount of on-site steel reinforcement tying work, effectively avoids human quality deviations, and significantly improves construction efficiency and project quality while ensuring the accuracy of steel reinforcement distribution and structural integrity. A weight-reducing block 5 is installed in the area where each first steel cage 3 and each second steel cage 4 intersects. By regularly arranging the weight-reducing blocks 5 on the precast base slab 1, the self-weight of the floor slab is significantly reduced, achieving structural lightweighting.
[0019] Specifically, the weight-reducing blocks 5 are located between the trapezoidal truss combination ribs 2 of each group. Limiting grooves 6 are opened on both sides of each weight-reducing block 5, and the corresponding trapezoidal truss combination rib 2 is tightly attached to each limiting groove 6. This can achieve precise limiting and constraint of each weight-reducing block 5, effectively preventing it from shifting or floating during construction, greatly simplifying the construction process and effectively reducing construction costs.
[0020] Specifically, the trapezoidal truss composite rib 2 is composed of rib plates and truss bars, and each limiting groove 6 is closely attached to the rib plate; each second steel cage 4 is in contact with the corresponding weight-reducing block 5; and concrete is poured on top of the precast base plate 1.
[0021] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A trapezoidal truss combined rib-slab hollow floor characterized by, The precast base plate (1) is provided with multiple sets of parallel trapezoidal truss combination ribs (2) evenly distributed on the precast base plate (1). Each set of trapezoidal truss combination ribs (2) is composed of two trapezoidal truss combination ribs (2) with a certain distance between them. A first steel cage (3) is tied between the two trapezoidal truss combination ribs (2) in each set. Multiple second steel cages (4) are evenly tied on each first steel cage (3). Each first steel cage (3) and each second steel cage (4) are vertically distributed. A weight reduction block (5) is installed in the area where each first steel cage (3) and each second steel cage (4) intersects.
2. The trapezoidal truss composite ribbed hollow floor slab according to claim 1, characterized in that, The weight-reducing blocks (5) are located between each group of trapezoidal truss combination ribs (2), and each weight-reducing block (5) has a limiting groove (6) on both sides, and the corresponding trapezoidal truss combination rib (2) is tightly attached to each limiting groove (6).
3. The trapezoidal truss composite ribbed hollow floor slab according to claim 2, characterized in that, The trapezoidal truss composite rib (2) is composed of rib plates and truss bars, and each of the limiting grooves (6) is closely attached to the rib plate.
4. The trapezoidal truss composite ribbed hollow floor slab according to claim 1, characterized in that, Each of the second steel cages (4) is in contact with the corresponding weight-reducing block (5).
5. The trapezoidal truss composite ribbed hollow floor slab according to claim 1, characterized in that, Concrete is poured on top of the precast base plate (1).