High sound insulation multifunctional cast-in-place concrete multi-cavity composite sandwich panel
Patent Information
- Application Number
- CN202620208845.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-12
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2036-02-12
AI Technical Summary
实心型预制混凝土浇筑成型外墙板的结构型式为横截面全部为混凝土，即全是以混凝土料浆浇注而成（以板厚100mm为例）；具有优良的承重性能、防火性能，但存在着墙板重、不便于运输及安装的缺陷；最重要的是，由于隔声效果是遵循质量定律，混凝土面密度约240 kg/m²，空气声隔声量约40～45dB，隔声效果中等，如果需要想提高隔声效果则需要大幅度增加实心型预制混凝土浇筑成型外墙板的板厚、且超出一定板厚范围后再通过增加板厚方法对提升隔声效果作用不太明显
本新型结构的墙板具有优异的隔声性能，同时兼具良好的保温性、防火性、防水性、高质的物理力学性能指标等综合性能。
Smart Images
Figure CN224918715U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of precast concrete composite components, specifically a high-sound-insulating and multifunctional cast-in-place concrete multi-cavity composite sandwich panel. Background Technology
[0002] As people's living standards improve, their demands for comfort in their living and working environments have also increased significantly. For wall panels, a crucial structural component of residential or office buildings, people are no longer satisfied with just load-bearing capacity, earthquake resistance, fire resistance, and waterproofing; they also demand higher levels of thermal insulation and sound insulation performance. While wall panel thermal insulation technology is relatively mature and stable, sound insulation performance still needs substantial improvement and requires further development and refinement to meet the privacy needs of modern offices and residences.
[0003] Currently, the sound insulation design of existing wall panels is mainly divided into two categories in terms of structure: The first category is multi-layer functional material composite exterior walls, with a structural form of outer panel + waterproof layer + fireproof layer + thermal insulation layer + sound insulation layer + waterproof layer + inner panel. The thickness and other parameters of each functional layer can be adjusted as needed to meet different functional requirements. However, this type of wall panel does not have load-bearing capacity, and the process is complex and costly. This type of multi-layer functional material composite exterior wall is more suitable for handmade production or family workshops and is not suitable for industrialized production. It is more popular in European and American buildings. The second category is precast concrete cast-in-place exterior wall panels. This type of wall panel has successively developed two representative structures—solid precast concrete cast-in-place exterior wall panels and single-cavity composite precast concrete cast-in-place exterior wall panels. Solid precast concrete cast-in-place exterior wall panels have a cross-section entirely made of concrete, meaning they are cast entirely from concrete slurry (taking a 100mm thick panel as an example). They possess excellent load-bearing and fire-resistant properties, but suffer from being heavy and inconvenient to transport and install. Most importantly, because sound insulation follows the law of mass, with a concrete surface density of approximately 240 kg / m², the airborne sound insulation is about 40-45 dB, resulting in moderate sound insulation. To improve sound insulation, the thickness of the solid precast concrete cast-in-place exterior wall panel needs to be significantly increased, and beyond a certain thickness range, further increases in thickness have little effect on improving sound insulation. The structure of single-cavity composite precast concrete cast-in-place exterior wall panels (see...) Figure 1 , Figure 2 , Figure 3For example, a wall panel with a total thickness of 300mm consists of a 50mm concrete surface layer + 200mm EPS + 50mm concrete surface layer. Single-cavity composite precast concrete cast-in-place exterior wall panels have sufficient load-bearing capacity to meet normal needs without excessive waste. The panel weight is moderate, making transportation and installation convenient. Due to the low thermal conductivity and high thermal resistance of EPS, its thermal insulation performance is excellent. However, EPS is flammable and will burn when exposed to fire. Although the concrete surface layer provides some protection, the overall fire resistance is poor. In terms of sound insulation, because the two concrete layers (total surface density approximately 240 kg / m²) are separated by the EPS elastic layer, sound bridges are reduced, resulting in better sound insulation performance than a single solid precast concrete cast-in-place exterior wall panel. The airborne sound insulation can reach 45-50dB, slightly better than solid wall panels, but the sound insulation effect still does not meet people's ideal sound insulation requirements for offices or residences.
[0004] In summary, among the three representative structural wall panels in the two main categories mentioned above, the single-cavity composite precast concrete cast-in-place exterior wall panel offers the best sound insulation while also considering mechanical properties, thermal insulation, and fireproofing. Its airborne sound insulation reaches 45-50 dB, which still falls short of people's expectations for sound insulation. Furthermore, practical experience has shown that for concrete-faced sandwich panels, the density of the concrete surface layer is fixed, and the increase in wall panel thickness is very limited due to the constraints of the overall building design. Moreover, beyond a certain thickness range, further increasing the panel thickness to improve sound insulation has negligible effect. Therefore, significantly improving the sound insulation of wall panels requires new structural adjustments and designs. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of the existing technology by providing a high-sound-insulating, multi-functional cast-in-place concrete multi-cavity composite sandwich panel. This novel wall panel structure possesses excellent sound insulation performance, while also exhibiting good thermal insulation, fire resistance, water resistance, and excellent physical and mechanical properties.
[0006] The objective of this utility model can be achieved through the following technical measures: This utility model discloses a high sound insulation and multifunctional cast-in-place concrete multi-cavity composite sandwich panel. It consists of several parallel, spaced, cast-in-place concrete partitions that divide the single cavity between the two concrete surface layers into multiple chambers, forming a multi-layered, multi-cavity structure. Lightweight sandwich panels are then filled into each of these chambers to create the multi-layered, multi-cavity composite sandwich structure. (Because the main body of this utility model is a multi-layered, multi-cavity structure composed of two concrete surface layers and several concrete partitions in the middle, a dividing layer is created between each adjacent layer, thus giving this utility model multi-layered demarcation.) Furthermore, filling each cavity with lightweight sandwich panels not only maintains the composite sandwich panel's good thermal insulation performance but also allows for the alternation of sound transmission media. According to the principle of sound attenuation, sound is transmitted through a medium in the form of sound waves. During propagation, sound attenuates due to energy loss caused by internal friction and heat conduction, especially at the interface between two media—this is because at the interface, in addition to the aforementioned energy loss, sound wave reflection and interference, refraction, and other phenomena occur. Scattering and diffraction of sound waves significantly reduce the sound energy in the original propagation direction, thus accelerating sound attenuation. Therefore, this invention can greatly improve sound insulation performance. Since the main body of this invention is a multi-layered, multi-cavity layered structure composed of two concrete surface layers and several concrete partitions in the middle, an interface is created between each adjacent layer, resulting in multiple interfaces. Furthermore, filling each cavity with lightweight sandwich panels not only maintains the good thermal insulation performance of the composite sandwich panel but also allows for the alternation of the sound transmission medium. According to the principle of sound attenuation, sound is transmitted in the form of sound waves in a medium. During sound propagation, energy loss occurs due to internal friction and heat conduction, causing sound attenuation. This attenuation is particularly pronounced at the interface between two media—because at the interface, in addition to the aforementioned energy loss, sound wave reflection and interference, refraction, scattering, and diffraction occur, all of which significantly reduce the sound energy in the original propagation direction, accelerating sound attenuation. Therefore, this invention can greatly improve sound insulation performance.
[0007] The lightweight sandwich panel described in this utility model has at least three layers, and the concrete partition has at least two layers (to ensure that this utility model forms a multi-layer, multi-cavity layered structure, to ensure that multiple interfaces are formed, and to ensure that sound waves pass through multiple interfaces during transmission, thereby losing a large amount of sound energy and thus greatly improving sound insulation performance).
[0008] The lightweight sandwich panel described in this utility model is any one of foamed polystyrene board, foamed polyurethane board, foamed glass board, foamed ceramic board, rock wool board, and glass fiber board (because the lightweight core layer uses such functional material core boards with heat insulation, sound insulation, or fireproof characteristics, the fiber cement composite sandwich ribbed panel component has advantages such as heat insulation, sound insulation, or fireproof).
[0009] The design principle of this utility model is as follows: This utility model discloses a high-sound-insulating, multi-functional cast-in-place concrete multi-cavity composite sandwich panel, belonging to the field of precast concrete components. This utility model optimizes the structure of a traditional single-cavity composite cast-in-place concrete exterior wall panel, which consists of a sandwich structure of two concrete surface layers and a lightweight sandwich panel in the middle. It transforms the single-layer concrete composite sandwich panel into a multi-layer composite sandwich panel—that is, by dividing the single cavity between the two concrete surface layers into multiple chambers using several parallel, spaced, cast-in-place concrete partitions, a multi-layer, multi-cavity layered structure is first formed. Then, lightweight sandwich panels are filled into each layered cavity to create a multi-layer, multi-cavity composite sandwich structure. Because the main body of this utility model is a multi-layer, multi-cavity layered structure composed of two concrete surface layers and several concrete partitions in the middle, a layer of interface is created between each adjacent layer, thus giving this utility model multiple layers of interfaces. Furthermore, filling each cavity with lightweight sandwich panels not only maintains good thermal insulation performance of the composite sandwich panel but also allows for the alternating replacement of the sound transmission medium. According to the principle of sound attenuation, sound travels through a medium in the form of sound waves. During propagation, sound attenuates due to energy loss caused by internal friction and heat conduction, especially at the interface between two media. This is because at the interface, in addition to the aforementioned energy loss, sound waves undergo reflection and interference, refraction, scattering, and diffraction, all of which significantly reduce the sound energy in the original propagation direction, thus accelerating sound attenuation. Therefore, this invention can greatly improve sound insulation performance. Furthermore, compared to single-cavity composite precast concrete cast-in-place exterior wall panels, this invention offers comparable thermal insulation and waterproofing, while improving physical and mechanical properties. Therefore, the wall panel of this invention possesses excellent sound insulation performance, along with good thermal insulation, fire resistance, waterproofing, and excellent physical and mechanical properties.
[0010] The beneficial technical effects of this utility model are as follows: The wall panels of this new structure have excellent sound insulation performance, while also possessing good thermal insulation, fire resistance, water resistance, and high-quality physical and mechanical properties. Attached Figure Description
[0011] Figure 1This is a schematic diagram of the structure of a traditional single-cavity composite precast concrete casting exterior wall panel.
[0012] Figure 2 yes Figure 1 The left view.
[0013] Figure 3 yes Figure 1 Top view.
[0014] Figure 4 This is a schematic diagram of the structure of this utility model.
[0015] Figure 5 yes Figure 4 The left view.
[0016] Figure 6 yes Figure 4 Top view.
[0017] The part numbers in the diagram are as follows: 1. Concrete surface layer, 2. Lightweight sandwich panel, 3. Concrete partition. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings: like Figures 4-6As shown, this utility model discloses a high sound insulation and multifunctional cast-in-place concrete multi-cavity composite sandwich panel. It consists of several parallel, spaced, cast-in-place concrete partitions 3 that divide the single cavity between the two concrete surface layers 1 into multiple chambers, forming a multi-layered, multi-cavity structure. Lightweight sandwich panels 3 are then filled into each of these chambers to create the multi-layered, multi-cavity composite sandwich structure. (Since the main body of this utility model is a multi-layered, multi-cavity structure composed of two concrete surface layers 1 and several concrete partitions 3 in the middle, an interface is created between each adjacent layer, thus this utility model possesses…) There are multiple interfaces. Furthermore, filling each cavity with lightweight sandwich panels 3 not only maintains the composite sandwich panel's good thermal insulation performance but also allows for the alternating replacement of the sound transmission medium. According to the principle of sound attenuation, sound is transmitted in the form of sound waves through a medium. During sound propagation, energy loss occurs due to internal friction and heat conduction, causing sound attenuation. This attenuation is particularly pronounced at the interface between two media—because at the interface, in addition to the aforementioned energy loss, sound wave reflection and interference, as well as sound wave refraction, also occur. Sound wave scattering and diffraction significantly reduce the sound energy in the original propagation direction, noticeably accelerating sound attenuation. Therefore, this invention can greatly improve sound insulation performance. Since the main body of this invention is a multi-layered, multi-cavity layered structure composed of two concrete surface layers 1 and several concrete partition layers 3 in the middle, an interface is created between each adjacent layer, thus this invention has multiple interfaces. Furthermore, after filling each cavity with lightweight sandwich panels 3, not only does the composite sandwich panel maintain good thermal insulation performance, but it also allows for the alternating replacement of the sound transmission medium. And according to the sound... As can be seen from the principle of sound attenuation, sound is transmitted in the form of sound waves in a medium. During the propagation of sound in a medium, energy loss is caused by processes such as internal friction and heat conduction, resulting in sound attenuation. In particular, the sound attenuation is greater at the interface between two media. This is because at the interface between two media, in addition to the energy loss mentioned above, sound wave reflection and interference, sound wave refraction, sound wave scattering, and sound wave diffraction will also occur. These will all lead to a significant reduction in the sound energy in the original propagation direction, which will significantly accelerate the sound attenuation. Therefore, this utility model can greatly improve the sound insulation performance.
[0019] The lightweight sandwich panel 3 described in this utility model has at least three layers, and the concrete partition 3 has at least two layers (to ensure that this utility model forms a multi-layer, multi-cavity layered structure, to ensure that multiple interfaces are formed, and to ensure that sound waves pass through multiple interfaces during transmission, thereby losing a large amount of sound energy and thus greatly improving sound insulation performance).
[0020] The lightweight sandwich panel 3 described in this utility model is any one of foamed polystyrene board, foamed polyurethane board, foamed glass board, foamed ceramic board, rock wool board, and glass fiber board (because the lightweight core layer uses such functional material core boards with heat insulation, sound insulation, or fireproof characteristics, the fiber cement composite sandwich ribbed panel component has advantages such as heat insulation, sound insulation, or fireproof).
[0021] The specific usage of this utility model is as follows: This utility model provides a high sound insulation and multifunctional cast-in-place concrete multi-cavity composite sandwich panel, mainly used as an exterior wall panel. It can be prefabricated and mass-produced industrially at a wall panel manufacturing plant. After the mass-produced concrete multi-cavity composite sandwich panels are transported to the construction site, they are hoisted to the installation height and aligned with the correct position using hoisting equipment, and then fixedly connected to the building frame and embedded parts.
[0022] Because the main body of this utility model is a multi-layered, multi-cavity layered structure composed of two concrete surface layers 1 and several concrete partition layers 3 in the middle, an interface is generated between each adjacent layer, thus this utility model has multiple interfaces. Furthermore, after filling each cavity with lightweight sandwich panels 3, not only does the composite sandwich panel maintain good thermal insulation performance, but it also allows for the alternation of sound transmission media. According to the principle of sound attenuation, sound is transmitted in the form of sound waves in a medium, and sound attenuation occurs due to energy loss caused by internal friction and heat conduction during propagation. This attenuation is particularly pronounced at the interface between two media—because at the interface, in addition to the aforementioned energy loss, sound wave reflection and interference, refraction, scattering, and diffraction occur, all of which significantly reduce the sound energy in the original propagation direction, noticeably accelerating sound attenuation. Therefore, this utility model can significantly improve sound insulation performance. At the same time, compared with single-cavity composite precast concrete cast-in-place exterior wall panels, this utility model has essentially the same thermal insulation and waterproof performance, while its physical and mechanical properties are improved. Therefore, the wall panel of this utility model has excellent sound insulation performance, and also has good thermal insulation, fire resistance, waterproof performance and excellent physical and mechanical properties, which can better meet the privacy needs of modern houses for office or residence.
Claims
1. A high-sound-insulating, multi-functional cast-in-place concrete multi-cavity composite sandwich panel, characterized in that: The concrete multi-cavity composite sandwich panel is formed by dividing the single cavity between the two concrete surface layers (1) into multiple chambers by several parallel and spaced concrete partitions (3) that are cast in a way that first forms a multi-layer multi-cavity layered structure, and then filling each layered cavity with a lightweight sandwich panel (2) to form a multi-layer multi-cavity composite sandwich structure.
2. The high sound insulation and multifunctional cast-in-place concrete multi-cavity composite sandwich panel according to claim 1, characterized in that: The lightweight sandwich panel (2) has at least three layers, and the concrete partition (3) has at least two layers.
3. The high sound insulation and multifunctional cast-in-place concrete multi-cavity composite sandwich panel according to claim 1, characterized in that: The lightweight sandwich panel (2) is any one of foamed polystyrene board, foamed polyurethane board, foamed glass board, foamed ceramic board, rock wool board, and glass fiber board.