Foundation structure based on foam concrete

Abstract

The utility model discloses a foundation structure based on foam concrete, which relates to the technical field of foamed concrete foundations and comprises a ground pile and a super-dense foam concrete layer, and an ultra-light foam concrete layer and a hydrophobic layer are arranged below the super-dense foam concrete layer. An anti-stretching layer used for isolation is laid between the ultra-dense foam concrete layer and the ultra-light foam concrete layer, the hydrophobic layer is located at the lower end of the ultra-light foam concrete layer, and a waterproof pad used for water prevention is arranged between the hydrophobic layer and the ground pile and laid on the upper end face of the ground pile. And support frames are uniformly arranged in the ultra-light foam concrete layer and the ultra-dense foam concrete layer. The utility model has the advantages of layered design, efficient drainage and seepage prevention, and excellent shock absorption, heat preservation and sound insulation performance, and solves the problems that the traditional foundation is insufficient in deformation resistance, easy to crack, overlarge in dead weight and poor in waterproof performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to foamed concrete ground technology field, concretely is a kind of ground structure based on foamed concrete. BACKGROUND

[0002] With the acceleration of urbanization process and the development of building technology, the requirement of ground structure is increasing, the traditional ground treatment method, such as the ground built by using single material (for example, ordinary concrete or gravel layer), when facing complex geological conditions and variable environmental influence, often exposes a series of problems, these problems mainly include: insufficient deformation resistance, easy to crack, the additional stress of underlying soil layer increases due to excessive self-weight, poor waterproof performance and long construction period etc.

[0003] Particularly in the area where groundwater level is higher or geological condition is relatively weak, traditional ground is prone to uneven settlement, which not only affects the safety and stability of building, but also can lead to the increase of long-term maintenance cost. In addition, traditional ground material is usually heavy, which increases the complexity and cost of foundation design for soft soil ground, the soft soil composite ground structure based on foamed concrete is disclosed in the authorized announcement CN222251560U, which uses single-layer foamed concrete as surface layer, if the density of single-layer foamed concrete is too low, the impact resistance effect is poor, if the density of single-layer foamed concrete is too high, the mass of ground is increased, and the heat preservation effect is affected, since there is lack of effective drainage and anti-seepage measures, the ground often faces corrosion risk due to water permeation, thereby shortening the service life of building, therefore, a ground structure based on foamed concrete is needed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a kind of ground structure based on foamed concrete, with the advantages of layered design, efficient drainage and anti-seepage, excellent shock absorption and heat insulation and sound insulation performance, solve the problems of insufficient deformation resistance, easy to crack, excessive self-weight and poor waterproof performance of traditional ground.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of ground structure based on foamed concrete, including ground pile and superdense foamed concrete layer, the lower of superdense foamed concrete layer is provided with superlight foamed concrete layer and hydrophobic layer, the superdense foamed concrete layer and superlight foamed concrete layer between are laid with be used for isolation tensile resistance layer, the hydrophobic layer is located in the lower end of superlight foamed concrete layer, the hydrophobic layer and ground pile between are provided with waterproof pad for waterproof, the waterproof pad is laid on the upper end surface of ground pile, the superlight foamed concrete layer and superdense foamed concrete layer are uniformly provided with support frame.

[0006] As a kind of based on the utility model discloses a foundation structure optimization based on foam concrete, the density of the superdense foam concrete layer is 1200-1400kg / m 3 , the thickness of the superdense foam concrete layer is 0.3-0.5m.

[0007] As a kind of based on the utility model discloses a foundation structure optimization based on foam concrete, the density of the superlight foam concrete layer is 300-400kg / m 3 , the thickness of the superlight foam concrete layer is 1.2-1.8m.

[0008] As a kind of based on the utility model discloses a foundation structure optimization based on foam concrete, the tensile resistance layer is made of HDPE fiber weaving, and the thickness of the tensile resistance layer is 3-5mm.

[0009] As a kind of based on the utility model discloses a foundation structure optimization based on foam concrete, the hydrophobic layer is made of anti-corrosion ceramic particles, and the thickness of the hydrophobic layer is 0.3m.

[0010] As a kind of based on the utility model discloses a foundation structure optimization based on foam concrete, the thickness of the waterproof pad is 3mm, and the waterproof pad is made of EPDM.

[0011] As a kind of based on the utility model discloses a foundation structure optimization based on foam concrete, the support frame is cylindrical mesh structure, and the support frame is made of reinforcing steel bar welding.

[0012] Compared with prior art, the utility model has the advantages as follows:

[0013] 1、the utility model discloses a gradient combination design of superdense foam concrete layer and superlight foam concrete layer, the surface superdense layer bears external load impact by virtue of dense structure, the lower layer superlight layer absorbs vibration energy by the porous flexible characteristic, the dispersion capacity of foundation to dynamic load is significantly enhanced in combination, the tensile resistance layer arranged in the middle is made of high ductility fiber material, effectively blocks the stress concentration caused by the stiffness difference of upper and lower layers, suppresses the interface cracking risk, the built-in mesh steel support frame further strengthens the integrity of concrete layer, forms three-dimensional skeleton restraint, so that the structure can still maintain stable form when bearing uneven settlement, this layered synergistic mechanism breaks through the bottleneck of easy cracking and insufficient anti-deformation capacity of traditional single material foundation.

[0014] 2, the utility model discloses double anti -infiltration barrier that bottom hydrophobic layer and waterproof pad constitute, form water guide channel through porous ceramic medium, and the moisture that seeps is discharged quickly, avoid the waterlogging corrosion foundation, the overlying EPDM waterproof pad is with the elastic deformation ability, while adapting the foundation microdeformation in the blocking groundwater capillary ascension, solved the traditional rigid waterproof layer easy peeling failure's problem, this system is especially for groundwater level fluctuation area, effectively blocks the corrosive medium erosion, greatly prolongs the service life of structure in humid environment, overcomes the durability decline defect that the conventional ground water seepage leads to.

[0015] 3, the utility model discloses the structure dead weight is reduced significantly through superlight foam concrete layer, and the additional stress of soft underlying soil layer is lightened, cooperates the lightweight mesh design of support frame, realizes the balance of material consumption and structural strength, the modularization laying process of prefabricated tensile resistance layer and standard waterproof pad, simplifies the field pouring process, shortens the construction period, and simultaneously, the whole system adopts the environment-friendly concrete and recyclable high polymer material, reduces resource consumption under the premise of guaranteeing engineering performance, fits the green construction demand, this kind of integrated design effectively solves the long construction period and the pain point of big environmental disturbance of traditional ground, is especially applicable to the engineering construction of urban renewal and ecological sensitive area. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic view of the utility model;

[0017] Figure 2 It is front view of the utility model;

[0018] Figure 3 It is support frame structure schematic view of the utility model;

[0019] Figure 4 It is the utility model's Figure 2 It is the enlarged view of A place in the middle.

[0020] In the drawing: 1, ground pile;2, waterproof pad;3, hydrophobic layer;4, superlight foam concrete layer;5, tensile resistance layer;6, superdense foam concrete layer;7, support frame. DETAILED DESCRIPTION

[0021] Please refer to Figures 1-4 , a kind of ground structure based on foam concrete, including ground pile 1 and superdense foam concrete layer 6, the lower of superdense foam concrete layer 6 is provided with superlight foam concrete layer 4 and hydrophobic layer 3, superdense foam concrete layer 6 and superlight foam concrete layer 4 between are laid with tensile resistance layer 5 for isolation, hydrophobic layer 3 is located at the lower end of superlight foam concrete layer 4, waterproof pad 2 for preventing water is arranged between hydrophobic layer 3 and ground pile 1, waterproof pad 2 is laid on the upper end surface of ground pile 1, superlight foam concrete layer 4 and superdense foam concrete layer 6 are uniformly provided with support frame 7.

[0022] The layered foam concrete structure makes the super-dense foam concrete layer 6 of the surface layer bear the impact, the lower super-light foam concrete layer 4 plays a role in shock absorption and noise reduction, the middle is provided with a tensile-resistant layer 5 to reduce the cracking probability, the bottom is provided with a hydrophobic layer 3 to improve the drainage effect, and the waterproof pad 2 is used to prevent the upward penetration of underground water.

[0023] Further, the density of the super-dense foam concrete layer 6 is 1200-1400 kg / m 3 , and the thickness of the super-dense foam concrete layer 6 is 0.3-0.5 m.

[0024] The super-dense foam concrete layer 6 forms a high-strength bearing layer by optimizing the material ratio and structure parameters, significantly improving the bearing performance and anti-deformation ability of the soft foundation, and balancing the stiffness and economy.

[0025] Further, the density of the super-light foam concrete layer 4 is 300-400 kg / m 3 , and the thickness of the super-light foam concrete layer 4 is 1.2-1.8 m.

[0026] The super-light foam concrete layer 4 constructs a flexible buffer system, which reduces the self-weight while providing excellent heat and sound insulation performance, and effectively controls uneven settlement through gradient thickness design.

[0027] Further, the tensile-resistant layer 5 is made of HDPE fiber weaving, and the thickness of the tensile-resistant layer 5 is 3-5 mm.

[0028] The HDPE tensile-resistant layer 5 suppresses the differential deformation between layers and enhances the integrity of the composite structure through mechanical isolation and interface enhancement technology, while having the engineering characteristics of corrosion resistance and easy construction.

[0029] Further, the hydrophobic layer 3 is made of corrosion-resistant ceramic particles, and the thickness of the hydrophobic layer 3 is 0.3 m.

[0030] The corrosion-resistant ceramic hydrophobic layer 3 adopts a porous medium design to form an efficient water guide channel, realizing the dual functions of groundwater drainage and corrosion-resistant medium blocking, and having durability and economy.

[0031] Further, the thickness of the waterproof pad 2 is 3 mm, and the waterproof pad 2 is made of EPDM.

[0032] The EPDM waterproof pad 2 adapts to the deformation of the foundation with the elastomer material characteristics to form a reliable waterproof barrier, and has the advantages of environmental protection and long service life.

[0033] Further, the support frame 7 is a cylindrical mesh structure, and the support frame 7 is made of steel reinforcement welding.

[0034] The cylindrical mesh steel support frame 7 is designed through light weight structure, the overall rigidity is enhanced, the concrete pouring quality is optimized, and the construction efficiency and the structural stability are improved.

[0035] During construction of the local foundation, firstly, the ground pile 1 is constructed, the ground pile 1 is planted in the undisturbed soil layer according to the designed interval by using the prefabrication or cast-in-place process, the top of the ground pile 1 is leveled, and then the 3mm-thick EPDM waterproof pad 2 is laid, a continuous closed waterproof barrier is formed by full adhesion, underground water is effectively prevented from permeating upward, then the 0.3m-thick anti-corrosion ceramic particle hydrophobic layer 3 is laid on the waterproof pad 2, the sintered ceramic particles with a particle size of 15-20mm are used, and an efficient water guide network is formed by using the porous structure to horizontally guide the underground water to the drainage system.

[0036] Then, the super-light foam concrete layer 4 is constructed, 300-400kg / m 3 The mixture with the density is layered and poured to a thickness of 1.2-1.8m, the self-weight is reduced by more than 40% through the large-thickness flexible structure, the thermal and sound insulation performance is provided by using the closed pore structure, the 3-5mm-thick HDPE fiber woven tensile-resistant layer 5 is fully laid on the top surface of the super-light layer, the interlayer adhesion is enhanced through the mechanical biting effect, and the differential deformation of the upper and lower layers is inhibited.

[0037] Then, the super-dense foam concrete layer 6 is constructed, 1200-1400kg / m 3 The mixture with the high density is poured to a thickness of 0.3-0.5m to form a rigid layer with high strength, the cylindrical mesh steel support frame 7 is synchronously planted in the super-light layer and the super-dense layer during the construction process, the hot-rolled steel bars with a diameter of 10-12mm are welded into a grid structure, the conduction of the concrete is optimized through the hollow design, and the overall rigidity is enhanced.

[0038] The layered structure forms a cooperative working system through the gradient material design, the super-dense layer bears the load of the upper structure and diffuses the stress, the super-light layer provides the flexible buffer and the thermal insulation function, the tensile-resistant layer 5 isolates the deformation difference, the hydrophobic layer 3 guides the underground water, the waterproof pad 2 blocks the permeation path, the support frame 7 enhances the structural integrity, and the functions of the composite foundation are realized through the material performance matching and the interface processing technology, that is, the rigid and flexible combination and the multi-field coupling, and the composite foundation is suitable for the engineering construction needs under the complex geological conditions such as soft soil and collapsible loess.

[0039] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection range of the utility model.

Claims

1. A foundation structure based on foamed concrete, comprising piles (1) and a layer of ultra-dense foamed concrete (6), characterized in that: Below the ultra-dense foam concrete layer (6) are ultra-lightweight foam concrete layer (4) and hydrophobic layer (3). A tensile layer (5) for isolation is laid between the ultra-dense foam concrete layer (6) and ultra-lightweight foam concrete layer (4). The hydrophobic layer (3) is located at the lower end of the ultra-lightweight foam concrete layer (4). A waterproof pad (2) for waterproofing is provided between the hydrophobic layer (3) and the ground pile (1). The waterproof pad (2) is laid flat on the upper surface of the ground pile (1). Support frames (7) are evenly arranged inside the ultra-lightweight foam concrete layer (4) and ultra-dense foam concrete layer (6).

2. A foundation structure based on foamed concrete as described in claim 1, characterized in that: The density of the ultra-dense foamed concrete layer (6) is 1200-1400 kg / m³. 3 The thickness of the ultra-dense foamed concrete layer (6) is 0.3-0.5m.

3. A foundation structure based on foamed concrete as described in claim 1, characterized in that: The density of the ultralight foamed concrete layer (4) is 300-400 kg / m³. 3 The thickness of the ultra-lightweight foamed concrete layer (4) is 1.2-1.8m.

4. A foundation structure based on foamed concrete as described in claim 1, characterized in that: The tensile layer (5) is made of HDPE fiber weaving and has a thickness of 3-5 mm.

5. A foundation structure based on foamed concrete as described in claim 1, characterized in that: The hydrophobic layer (3) is made of corrosion-resistant ceramic particles and has a thickness of 0.3m.

6. A foundation structure based on foamed concrete as described in claim 1, characterized in that: The waterproof pad (2) is 3mm thick and is made of EPDM rubber.

7. A foundation structure based on foamed concrete as described in claim 1, characterized in that: The support frame (7) is a cylindrical mesh structure and is made of welded steel bars.

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