A precast unit slab integrating beam and slab

Abstract

This utility model discloses an integrated precast beam-slab unit panel, specifically relating to the field of building technology. It includes two steel beams and multiple precast concrete slabs fixedly installed on the top surfaces of the two steel beams. Two inserts are fixedly installed on one side of each precast concrete slab, and two slots are provided on the other side. In practical operation, when rainwater falls onto the top surface of the precast concrete slabs, it flows along multiple guide channels into a collection channel, and then into a guide pipe within a guide hole. After the two precast concrete slabs are joined, rainwater seeps into the joint between them. The seeping rainwater flows through the main and secondary guide channels into a guide pipe within a preset hole, and then into a drain pipe for discharge. This facilitates timely drainage of rainwater and effectively prevents water leakage caused by prolonged rainwater accumulation.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a prefabricated unit panel that integrates beams and slabs. Background Technology

[0002] When prefabricated concrete buildings use composite floor slabs and precast composite beams, support is usually required during the construction phase. When the floor height is large, the support system is complex and expensive. However, using precast unit slabs that integrate beams and slabs can achieve support-free and formwork-free construction of precast concrete structures, speeding up construction and reducing project costs.

[0003] A search revealed, for example, a utility model with publication number CN214833897U, which discloses an integrated prefabricated unit for beams and slabs with a large span-to-thickness ratio. This unit includes an integrated prefabricated beam and slab, embedded fixing components, and prestressing application components. The integrated prefabricated beam and slab includes a flat plate and two flanges spaced apart on the bottom surface of the flat plate. When the prefabricated unit is used in an external environment, rainwater will fall onto its top surface. This rainwater will gradually seep in over time, which can easily lead to leakage. This utility model does not facilitate timely drainage of rainwater. Therefore, in order to solve the above defects, the inventor proposes an integrated prefabricated unit for beams and slabs. Utility Model Content

[0004] The main purpose of this utility model is to provide an integrated precast unit slab for beams and slabs, which can effectively solve the problem that precast unit slabs in the prior art are not convenient for timely drainage of rainwater.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An integrated precast unit slab for beams and slabs includes two steel beams and multiple precast concrete slabs fixedly installed on the top surfaces of the two steel beams. Two inserts are fixedly installed on one side of each precast concrete slab, and two slots are opened on the other side of each precast concrete slab. Elastic waterproof membrane is pasted on the upper and lower sides of the outer surfaces of the two inserts. A main drainage groove is opened on the inner bottom surface of each of the two slots, and a preset hole is opened inside each of the two main drainage grooves. Multiple secondary drainage grooves are opened on the inner bottom surface of each of the two slots, and the multiple secondary drainage grooves are respectively connected to the two main drainage grooves.

[0007] Preferably, the elastic waterproof membrane includes water-swellable rubber, the top surface of which is provided with EPDM rubber, and the water-swellable rubber is adhered to the upper and lower sides of the outer surface of the insert block.

[0008] Preferably, the top surface of the precast concrete slab is provided with multiple guide grooves, and one side of the top surface of the precast concrete slab is provided with a flow-gathering groove, and the multiple guide grooves are all connected to the flow-gathering groove, and the top surface of the flow-gathering groove is provided with guide holes.

[0009] Preferably, a guide tube is fixedly installed inside the guide hole, and a drainage tube is fixedly installed inside each of the two preset holes, and both drainage tubes are fixedly connected to the guide tube.

[0010] Preferably, a drainage pipe is fixedly installed on one side of the steel beam, and one end of the guide pipe extends to the outside of the precast concrete slab and is fixedly connected to the drainage pipe.

[0011] Preferably, one side of the precast concrete slab has multiple upper connecting holes, and one side of the precast concrete slab has multiple lower connecting holes, with the lower connecting holes located below the upper connecting holes. Both the upper and lower connecting holes have multiple reinforcing ribs inside. The upper connecting holes have multiple high-aerogel insulation blocks inside, and the lower connecting holes have multiple sound-absorbing cotton inside.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model discloses an integrated precast unit panel for beams and slabs. By setting inserts and slots, in actual operation, when rainwater falls onto the top surface of the precast concrete slab, the rainwater will flow into the collection channel along multiple guide channels, and then enter the guide pipe in the guide hole through the collection channel. After two precast concrete slabs are inserted, the rainwater seeps into the joint between the two precast concrete slabs. The rainwater will come into contact with the water-swellable rubber, causing it to expand and seal the joint between the two precast concrete slabs. The seeping rainwater will flow into the guide pipe in the preset hole through the main guide channel and the secondary guide channel, and then flow into the drain pipe through the guide pipe for discharge. This facilitates timely drainage of rainwater and effectively avoids water leakage caused by long-term accumulation of rainwater. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a side view of the precast concrete slab structure of this utility model.

[0016] Figure 3 For the present utility model Figure 2 Enlarged view of section A in the middle;

[0017] Figure 4 This is a schematic diagram of the slot structure of this utility model;

[0018] Figure 5 For the present utility model Figure 4 Enlarged view of section B in the middle;

[0019] Figure 6 This is a top view of the precast concrete slab of this utility model;

[0020] Figure 7 This is a cross-sectional structural diagram of the precast concrete slab of this utility model;

[0021] Figure 8 This is a bottom view schematic diagram of the precast concrete slab structure of this utility model;

[0022] Figure 9 This is a cross-sectional view of the upper connecting hole of this utility model.

[0023] In the diagram: 1. Steel beam; 2. Precast concrete slab; 201. Slot; 202. Insert block; 203. EPDM rubber; 204. Water-swellable rubber; 2011. Main drainage channel; 2012. Secondary drainage channel; 2013. Pre-set hole; 2021. Guide channel; 2022. Converging channel; 2023. Guide hole; 2031. Guide pipe; 2032. Drainage pipe; 101. Drainage pipe; 2041. Upper connection hole; 2042. Reinforcing rib; 2043. Sound-absorbing cotton; 2044. High aerogel insulation block; 2045. Lower connection hole. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] This utility model discloses an integrated precast unit slab for beams and slabs, such as Figure 1-9 As shown, the structure includes two steel beams 1 and multiple precast concrete slabs 2 fixedly installed on the top surface of the two steel beams 1. Multiple guide channels 2021 are formed on the top surface of the precast concrete slabs 2, and a flow-gathering channel 2022 is formed on one side of the top surface of the precast concrete slabs 2. The multiple guide channels 2021 are all connected to the flow-gathering channel 2022. Guide holes 2023 are formed on the top surface of the flow-gathering channel 2022. A nano-hydrophobic coating is sprayed on the surface of the precast concrete slabs 2, the surface of the multiple guide channels 2021, and the surface of the flow-gathering channel 2022. The coating surface forms micron-level protrusions or nano-level grooves. The rough structure traps air, reduces the contact area between water droplets and the substrate, and allows rainwater falling on the top surface of the precast concrete slabs 2 to slide off quickly, reducing water accumulation.

[0026] When rainwater falls into the multiple diversion channels 2021, it slides and flows into the collection channel 2022, and then flows into the diversion hole 2023 through the collection channel 2022, so as to prevent rainwater from staying on the top surface of the precast concrete slab 2 for a long time.

[0027] Two inserts 202 are fixedly installed on one side of the precast concrete slab 2, and two slots 201 are opened on the other side of the precast concrete slab 2. Elastic waterproof membrane is pasted on the upper and lower sides of the outer surface of the two inserts 202. When the inserts 202 are inserted into the slots 201, the elastic waterproof membrane will fill the gap between the insert and the slots 201.

[0028] Both slots 201 have main drainage grooves 2011 on their inner bottom surfaces, and both main drainage grooves 2011 have preset holes 2013 inside. Both slots 201 have multiple secondary drainage grooves 2012 on their inner bottom surfaces, and the multiple secondary drainage grooves 2012 are connected to the two main drainage grooves 2011 respectively. When rainwater seeps into the joint between the plug 202 and the slot 201, the rainwater will seep into the inner bottom surface of the slot 201, and then flow into the main drainage grooves 2011 through the multiple secondary drainage grooves 2012, and then into the preset holes 2013 through the main drainage grooves 2011.

[0029] The elastic waterproof membrane includes water-swellable rubber 204, and EPDM rubber 203 is provided on the top surface of the water-swellable rubber 204. EPDM rubber 203 is located on the top surface of the water-swellable rubber 204. EPDM rubber 203 has good anti-aging and UV resistance. Moreover, the water-swellable rubber 204 is adhered to the upper and lower sides of the outer surface of the insert 202.

[0030] When the infiltrated rainwater comes into contact with the water-swellable rubber 204, the hydrophilic polymer material embedded in the rubber matrix combines with the water molecules after contact with water, and the molecular chains extend, causing the rubber to expand in volume and form a tight "plug"-like structure. The expansion process continues until the rubber is saturated with water. The expanded rubber tightly adheres to the irregular surface of the joint, blocking the water seepage channel.

[0031] A guide pipe 2031 is fixedly installed inside the guide hole 2023, and a drain pipe 2032 is fixedly installed inside the two preset holes 2013. Both drain pipes 2032 are fixedly connected to the guide pipe 2031. Rainwater that seeps into the joint between the insert 202 and the slot 201 will enter the guide pipe 2031 through the drain pipe 2032 and finally be discharged through the guide pipe 2031.

[0032] A drainage pipe 101 is fixedly installed on one side of the steel beam 1, and one end of the guide pipe 2031 extends to the outside of the precast concrete slab 2 and is fixedly connected to the drainage pipe 101. Rainwater entering the guide pipe 2031 will enter the drainage pipe 101, and the drainage pipe 101 is connected to the external drainage pipe, so that rainwater can be discharged through the drainage pipe 101.

[0033] A plurality of upper connecting holes 2041 are provided on one side of the precast concrete slab 2 at equal intervals, and a plurality of lower connecting holes 2045 are provided on one side of the precast concrete slab 2 at equal intervals, with the lower connecting holes 2045 located below the upper connecting holes 2041.

[0034] Both the upper connecting hole 2041 and the lower connecting hole 2045 are equipped with multiple reinforcing ribs 2042. The reinforcing ribs 2042 are made of high-strength steel bars to improve local bearing capacity. The upper connecting hole 2041 is equipped with multiple high aerogel insulation blocks 2044. The high aerogel insulation layer is a high-efficiency heat insulation technology based on nanoporous aerogel materials. Through its extremely low thermal conductivity and unique three-dimensional network structure, it achieves ultra-low heat conduction and radiation barrier, thereby effectively improving the heat insulation effect of the precast concrete slab 2. The lower connecting hole 2045 is equipped with multiple sound-absorbing cotton 2043. The sound-absorbing cotton 2043 is composed of interwoven fibers or open-cell foam, forming a large number of micropores. After sound waves enter, they are converted into heat energy through friction and viscous resistance, thereby effectively improving the sound insulation effect of the precast concrete slab 2.

[0035] In actual production, staff can adjust the position and number of the upper connecting hole 2041 and the lower connecting hole 2045 to adapt to different building needs.

[0036] The working principle of this utility model is as follows: the precast concrete slab 2 is assembled with the steel beam 1, and the insert block 202 of the precast concrete slab 2 is inserted into the slot 201, so that multiple precast concrete slabs 2 can be spliced ​​together. When precasting the precast concrete slab 2, multiple upper connecting holes 2041 and multiple lower connecting holes 2045 and a pre-set hole 2013 for placing the drainage pipe 2032 are preset.

[0037] When rainwater falls onto the top surface of the precast concrete slab 2 and into the multiple guide channels 2021, the rainwater will slide along the multiple guide channels 2021 until it flows into the collection channel 2022. The rainwater entering the collection channel 2022 will flow into the guide hole 2023 and then into the guide pipe 2031 to prevent rainwater from staying on the top surface of the precast concrete slab 2 for a long time.

[0038] When rainwater seeps into the joint between the insert 202 and the slot 201, it seeps into the inner bottom surface of the slot 201. Then, it flows into the main drainage channel 2011 through multiple secondary drainage channels 2012, and then into the preset hole 2013 through the main drainage channel 2011. It then enters the drainage pipe 2032 in the preset hole 2013, and then enters the guide pipe 2031 through the drainage pipe 2032. The rainwater entering the guide pipe 2031 then enters the drain pipe 101 on one side of the steel beam 1 to drain the rainwater.

[0039] When rainwater seeps into the joint between the insert 202 and the slot 201, it comes into contact with the water-swellable rubber 204. Because the rubber matrix is ​​embedded with hydrophilic polymer materials, when it comes into contact with water, the hydrophilic groups combine with water molecules, the molecular chains extend, and the rubber expands in volume, forming a tight "plug"-like structure. The expansion process continues until the rubber is saturated with water. The expanded rubber tightly adheres to the irregular surface of the joint, blocking the water seepage channel and improving the sealing effect between the insert 202 and the slot 201.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A beam-slab integrated prefabricated unit slab, comprising two steel beams (1) and a plurality of concrete prefabricated slabs (2) fixedly installed on the top surface of the two steel beams (1), characterized in that: Two inserts (202) are fixedly installed on one side of the precast concrete slab (2), and two slots (201) are opened on the other side of the precast concrete slab (2). Elastic waterproof membrane is pasted on the upper and lower sides of the outer surface of the two inserts (202). The inner bottom surface of the two slots (201) is provided with a main drainage groove (2011), and the interior of the two main drainage grooves (2011) is provided with a preset hole (2013). The inner bottom surface of the two slots (201) is provided with multiple secondary drainage grooves (2012), and the multiple secondary drainage grooves (2012) are respectively connected to the two main drainage grooves (2011).

2. The beam-slab integrated prefabricated unit slab according to claim 1, characterized in that: The elastic waterproof membrane includes water-swellable rubber (204), the top surface of which is provided with EPDM rubber (203), and the water-swellable rubber (204) is adhered to the upper and lower sides of the outer surface of the insert (202).

3. The beam-slab integrated prefabricated unit slab according to claim 1, characterized in that: The top surface of the precast concrete slab (2) is provided with multiple guide channels (2021), and a flow-gathering channel (2022) is provided on one side of the top surface of the precast concrete slab (2). The multiple guide channels (2021) are all connected to the flow-gathering channel (2022), and the top surface of the flow-gathering channel (2022) is provided with guide holes (2023).

4. The beam-slab integrated precast unit slab according to claim 3, wherein: A guide pipe (2031) is fixedly installed inside the guide hole (2023), and a drain pipe (2032) is fixedly installed inside each of the two preset holes (2013), and both drain pipes (2032) are fixedly connected to the guide pipe (2031).

5. The beam-slab integrated precast unit slab according to claim 4, wherein: A drainage pipe (101) is fixedly installed on one side of the steel beam (1), and one end of the guide pipe (2031) extends to the outside of the precast concrete slab (2) and is fixedly connected to the drainage pipe (101).

6. The beam-slab integrated precast unit slab according to claim 1, wherein: The precast concrete slab (2) has multiple upper connecting holes (2041) on one side and multiple lower connecting holes (2045) on one side, with the lower connecting holes (2045) located below the upper connecting holes (2041). Both the upper connecting holes (2041) and the lower connecting holes (2045) have multiple reinforcing ribs (2042) inside. The upper connecting hole (2041) has multiple high aerogel insulation blocks (2044) inside, and the lower connecting hole (2045) has multiple sound-absorbing cotton (2043) inside.

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