Novel anti-seismic and anti-corrosion house building foundation

Abstract

The invention relates to the technical field of anti-seismic and anti-corrosion house building, and discloses a novel anti-seismic and anti-corrosion house building foundation which comprises a tamped soil base layer, a gravel layer is arranged on the top of the tamped soil base layer, a raft is arranged on the top of the gravel layer, transverse steel bars are fixedly connected to the middle of the raft, and longitudinal steel bars are fixedly connected to the middle of the raft. The top surface of the raft plate is fixedly connected with a pre-embedded steel plate, the top surface of the raft plate is fixedly connected with a column foot, the interior of the column foot is provided with a structural steel bar, the bottom of the raft plate is fixedly connected with a prestressed column, and the outer wall of the raft plate is fixedly connected with a geomembrane. Good water permeability of the gravel layer can effectively prevent underground water from being accumulated at the bottom of the foundation, the steel reinforcement framework of the raft effectively improves the bending resistance and the shearing resistance of the raft, the structural steel bars can enhance the bearing capacity and the anti-seismic performance of the column feet, and the prestressed columns can improve the crack resistance and the overall stability of the raft.

Description

Technical Field

[0001] The invention relates to the technical field of earthquake-resistant and anti-corrosion building construction, and in particular to a novel earthquake-resistant and anti-corrosion building construction foundation. Background Art

[0002] With the continuous development of modern construction technology, the foundation design of buildings has gradually become one of the key factors for building safety and durability. Among the many basic design requirements, earthquake-resistant and anti-corrosion building foundations are particularly important, especially in earthquake-prone areas and places with corrosive environments. The foundation of a building not only has to bear the weight of the building, but also has to bear various uncertain factors from the outside world, such as earthquakes, wind, soil deformation, and environmental corrosion. Therefore, ensuring the earthquake resistance and anti-corrosion performance of the building foundation is crucial to the safety, stability, and long-term reliability of the building.

[0003] The foundation of a building is the most critical part that supports the entire building. It carries the weight of the superstructure and transfers the load to the underground soil. A foundation with good seismic performance can effectively resist the horizontal force, vertical force and shear force caused by earthquakes, and prevent the building from tilting, sinking or collapsing during an earthquake. In areas where earthquakes occur frequently, if a building is not designed with a strong enough seismic foundation, it is very easy to be damaged by earthquake waves, and may even cause the collapse of the entire structure of the building, resulting in casualties and property losses.

[0004] In some environments, especially coastal, humid, and chemically polluted areas, the soil or groundwater contains certain corrosive components. These components will cause serious corrosion to the building's foundation structure, especially the reinforced concrete structure. Corrosion will cause the steel bars or metal components in the foundation to gradually lose strength, causing cracks, settlement, or even rupture in the foundation. If the foundation is corroded, the overall stability of the building will be greatly threatened. Therefore, the design of the foundation's anti-corrosion performance has become a crucial link in construction projects, especially in areas with corrosive environments.

[0005] Earthquake-resistant and anti-corrosion designs are not only for responding to short-term natural disasters or environmental impacts, but more importantly for extending the service life of buildings. Buildings often need to be used for decades or even longer. The performance of the foundation, as the part in contact with the soil and groundwater, directly affects the long-term stability of the building. If the foundation does not have sufficient earthquake resistance and corrosion resistance, it may cause various safety hazards during the use of the building. By enhancing the earthquake resistance and corrosion resistance of the foundation through reasonable design and engineering measures, the aging and damage of the foundation materials can be effectively delayed, thereby extending the service life of the entire building.

[0006] Earthquake-resistant design is one of the most critical parts of foundation design. The impact of earthquakes on buildings is not only reflected in strong vibrations and displacements, but also causes soil liquefaction, ground cracks and other phenomena, which will threaten the stability and safety of buildings. Therefore, earthquake-resistant design needs to start from multiple aspects.

[0007] Calculation of seismic loads: The foundation of a building needs to withstand horizontal and vertical forces from earthquakes, which increase with the intensity of the earthquake. Therefore, when designing a building, it is necessary to reasonably calculate the seismic load based on the seismic intensity of the area where the building is located and the characteristics of the soil. By calculating the seismic load, the size, shape and material of the foundation can be determined.

[0008] Flexibility and rigidity design of foundation: An important principle of earthquake-resistant foundation design is to ensure that the foundation of the building has a certain flexibility so that it can effectively absorb the energy of earthquake waves and reduce the damage to the upper structure of the building through reasonable deformation. Generally speaking, a foundation with greater flexibility can effectively slow down the transmission of earthquakes, thereby reducing the vibration impact of the building.

[0009] Earthquake reinforcement measures: For buildings that have already been built, if the foundation is found to be insufficiently earthquake-resistant, reinforcement measures can be taken to improve its earthquake resistance, for example, increasing the depth of the foundation, increasing the bearing capacity of the foundation, using earthquake-resistant materials, etc.

[0010] The main purpose of anti-corrosion design is to prevent the building materials in the foundation, such as steel bars and steel plates, from being corroded, thereby affecting the long-term stability of the foundation. Foundation anti-corrosion design usually needs to consider the following aspects: Anti-corrosion coating and material selection: Anti-corrosion coating is a common method to prevent corrosion of steel bars and other metal materials. Anti-corrosion coating can form a protective film on the surface of the foundation, isolating the erosion of the foundation material by moisture and chemicals. In addition, the selection of foundation materials is also critical. Corrosion-resistant building materials, such as stainless steel and corrosion-resistant concrete, can effectively improve the durability of the foundation.

[0011] Protection against groundwater and soil corrosion: In some areas, groundwater may contain high concentrations of salt or acidic substances, which can accelerate the corrosion of steel and concrete. To address this problem, measures such as waterproofing, strengthening the foundation surface, or improving groundwater drainage can be taken to reduce the contact between corrosive substances and the foundation.

[0012] Regular inspection and maintenance: The anti-corrosion work of the foundation does not only rely on the initial design and construction, regular inspection and maintenance are also the key to ensure the long-term stability of the foundation. Especially in coastal, humid or heavily polluted areas, regular inspection of the foundation anti-corrosion layer to see if it is intact, timely detection of corrosion signs, repair and reinforcement, can effectively avoid major safety hazards caused by corrosion.

[0013] The design of earthquake-resistant and anti-corrosion building foundation is an indispensable part of modern architecture. It is directly related to the safety, stability and long-term service life of the building. In earthquake-prone areas and corrosive environments, the earthquake resistance and corrosion resistance of building foundations are particularly important. With the development of construction technology, more and more innovative technologies and materials are applied to foundation design, providing more effective earthquake-resistant and anti-corrosion solutions. However, foundation design is not just a simple engineering and technical issue, but also a guarantee for the service life and safety of the building. In the future, with the continuous advancement of technology, the design and construction of earthquake-resistant and anti-corrosion building foundations will be more scientific and sophisticated, meeting more stringent building safety requirements.

[0014] Earthquake disasters have a huge impact on human society. A strong earthquake may cause a large number of buildings to collapse, resulting in casualties and huge economic losses. Improving the seismic resistance of building foundations has become an inevitable requirement for protecting people’s lives and property. Industrial development and human activities have led to increased environmental pollution, increased corrosiveness of soil and groundwater, and the phenomenon of corrosion damage to many buildings has become increasingly serious, weakening the bearing capacity of building structures and greatly reducing safety.

[0015] In order to adapt to social development and meet the needs of safe and stable living and working environments, the research and application of earthquake-resistant and anti-corrosion building foundations is particularly important, which can effectively reduce the damage of earthquakes and corrosion to buildings and reduce maintenance and reconstruction costs. However, the current earthquake-resistant and anti-corrosion building foundations can withstand earthquake forces to a certain extent, but there are limitations when facing high-intensity earthquakes and complex seismic motions. A single anti-corrosion coating will age and peel off after long-term use. Summary of the invention

[0016] In order to make up for the above shortcomings, the present invention provides a new type of earthquake-resistant and anti-corrosion building foundation, aiming to improve the limitations of the existing technology when facing high-intensity earthquakes and complex seismic motions, and the problem of aging and peeling of a single anti-corrosion coating after long-term use.

[0017] In order to achieve the above object, the present invention adopts the following technical solutions: A novel earthquake-resistant and corrosion-resistant building foundation comprises a rammed earth base, a crushed stone layer is arranged on the top of the rammed earth base, a raft is arranged on the top of the crushed stone layer, a transverse steel bar is fixedly connected to the middle of the raft, a longitudinal steel bar is fixedly connected to the middle of the raft, an embedded steel plate is fixedly connected to the top surface of the raft, a column foot is fixedly connected to the top surface of the raft, structural steel bars are arranged inside the column foot, a prestressed column is fixedly connected to the bottom of the raft, and a seismic isolation mechanism is arranged above the raft, and the seismic isolation mechanism is used to absorb vibration energy and isolate vibration.

[0018] Furthermore, the seismic isolation mechanism includes a connecting steel plate, the bottom surface of the connecting steel plate is fixedly connected to the top surface of the embedded steel plate, the top surface of the connecting steel plate is fixedly connected to a limiting column, the top surface of the connecting steel plate is fixedly connected to a rubber sheet, the top surface of the rubber sheet is fixedly connected to a steel sheet, the outer wall of the rubber sheet is fixedly connected to a protective shell, the middle part of the rubber sheet is fixedly connected to a lead core, and the top surface of the lead core is fixedly connected to a sealing plate.

[0019] Furthermore, a geomembrane is fixedly connected to the outer wall of the raft, and a drainage hole is opened on the top surface of the raft.

[0020] Furthermore, a reinforcing rib is fixedly connected to the top surface of the raft plate, and the other end of the reinforcing rib is fixedly connected to the outer wall of the column foot.

[0021] Furthermore, stirrups are fixedly connected to the outer wall of the structural steel bar, and anchor steel bars are fixedly connected to the bottom end of the structural steel bar.

[0022] Furthermore, the outer walls of the rubber sheet and the steel sheet are both provided with through holes, and the inner walls of the through holes are provided with springs.

[0023] Furthermore, the raft slab is high-strength concrete, and slag and fly ash are added into the raft slab.

[0024] Furthermore, the anchoring steel bars are cast in the raft slab, and the outer wall of the embedded steel plate is provided with an anti-corrosion layer.

[0025] The present invention has the following beneficial effects: 1. In the present invention, the rammed soil base is compacted layer by layer for multiple times, the good water permeability of the crushed stone layer can effectively prevent the accumulation of groundwater at the bottom of the foundation, the transverse steel bars and the longitudinal steel bars together constitute the steel skeleton of the raft slab, which effectively improves the bending and shearing resistance of the raft slab, the structural steel bars form a stable skeleton structure in the column foot, enhance the bearing capacity and seismic resistance of the column foot, and the prestressed column can improve the crack resistance and overall stability of the raft slab.

[0026] 2. In the present invention, the interior of the seismic isolation mechanism is alternately stacked with multiple layers of rubber sheets and multiple layers of steel sheets. When the weight of the building is transferred to the seismic isolation mechanism through the upper structure, the rubber sheets are tightly bonded to the steel sheets, and the steel sheets can limit the lateral deformation of the rubber sheets, so that the seismic isolation mechanism has a large vertical bearing capacity and vertical stiffness, so that it can stably support the weight of the building. The lead core undergoes plastic deformation, converting the seismic energy into heat energy for consumption, thereby effectively improving the energy consumption capacity of the seismic isolation mechanism, reducing the vibration response of the building in an earthquake, and enhancing the seismic resistance of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A front perspective view of a novel earthquake-resistant and anti-corrosion building foundation proposed by the present invention; Figure 2 This is a partial structural diagram of a new type of earthquake-resistant and anti-corrosion building foundation gravel layer proposed by the present invention; Figure 3 A partial structural diagram of a novel earthquake-resistant and anti-corrosion building foundation column foot proposed by the present invention; Figure 4 A partial structural display diagram of a novel earthquake-resistant and anti-corrosion building foundation embedded steel plate proposed by the present invention; Figure 5 This is a schematic diagram of the structural disassembly of a novel earthquake-resistant and anti-corrosion building foundation isolation mechanism proposed by the present invention; Legend: 1. Compacted soil base; 2. Isolation mechanism; 201. Connecting steel plate; 202. Limiting column; 203. Protective shell; 204. Rubber sheet; 205. Steel sheet; 206. Sealing plate; 207. Lead core; 3. Gravel layer; 4. Raft; 5. Prestressed column; 6. Transverse steel bar; 7. Column foot; 8. Structural steel bar; 9. Longitudinal steel bar; 10. Geomembrane; 11. Embedded steel plate; 12. Reinforcement rib; 13. Drainage hole; 14. Hoop reinforcement; 15. Anchor steel bar; 16. Through hole; 17. Spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Please refer to the attached Figure 1 - Attachment Figure 3 , an embodiment provided by the present invention: a novel earthquake-resistant and anti-corrosion building foundation, comprising a rammed earth base layer 1, a crushed stone layer 3 is arranged on the top of the rammed earth base layer 1, a raft 4 is arranged on the top of the crushed stone layer 3, a transverse steel bar 6 is fixedly connected to the middle of the raft 4, a longitudinal steel bar 9 is fixedly connected to the middle of the raft 4, a pre-buried steel plate 11 is fixedly connected to the top surface of the raft 4, a column foot 7 is fixedly connected to the top surface of the raft 4, a structural steel bar 8 is arranged inside the column foot 7, a prestressed column 5 is fixedly connected to the bottom of the raft 4, and a seismic isolation mechanism 2 is arranged above the raft 4, and the seismic isolation mechanism 2 is used to absorb vibration energy and isolate vibration; Specifically, the rammed earth base layer 1 is rammed in layers for multiple times to ensure that the compaction degree of each layer of soil meets the requirements, thereby providing stable and reliable support for the entire foundation. The gravel layer 3 is paved with hard gravel. The good water permeability of the gravel layer 3 can effectively prevent groundwater from accumulating at the bottom of the foundation and reduce the adverse effects of water accumulation on the foundation. The raft 4 is a key load-bearing component in the entire foundation structure. The transverse steel bars 6 are evenly arranged in the raft 4, and together with the longitudinal steel bars 9, they constitute the steel skeleton of the raft 4, which effectively improves the bending and shear resistance of the raft 4. The embedded steel plate 11 is pre-placed before the raft 4 is poured with concrete for subsequent connection with other structural components. The structural steel bars 8 form a stable skeleton structure in the column foot 7 to enhance the bearing capacity and seismic resistance of the column foot 7. The prestressed column 5 can improve the crack resistance and overall stability of the raft 4.

[0030] Please refer to the attached Figure 4 - Attachment Figure 5 The seismic isolation mechanism 2 includes a connecting steel plate 201, the bottom surface of the connecting steel plate 201 is fixedly connected to the top surface of the embedded steel plate 11, the top surface of the connecting steel plate 201 is fixedly connected to the limiting column 202, the top surface of the connecting steel plate 201 is fixedly connected to a rubber sheet 204, the top surface of the rubber sheet 204 is fixedly connected to a steel sheet 205, the outer wall of the rubber sheet 204 is fixedly connected to a protective shell 203, the middle part of the rubber sheet 204 is fixedly connected to a lead core 207, and the top surface of the lead core 207 is fixedly connected to a sealing plate 206; Specifically, the connecting steel plate 201 is a connecting component between the seismic isolation mechanism 2 and the raft 4, ensuring that the seismic isolation mechanism 2 can be stably installed on the raft 4, providing a solid foundation for the subsequent seismic isolation function. The limit columns 202 are evenly distributed on the connecting steel plate 201 to limit the horizontal displacement of the seismic isolation mechanism 2 to prevent the seismic isolation mechanism 2 from failing or colliding with other structural components due to excessive displacement. The rubber sheet 204 is a key component for the seismic isolation mechanism 2 to achieve the seismic isolation function. The rubber sheet 204 has the characteristics of high elasticity, high damping and aging resistance. The steel sheet 205 is alternately stacked with the rubber sheet 204. The function of the steel sheet 205 is to enhance the vertical bearing capacity of the seismic isolation mechanism 2, and at the same time work with the rubber sheet 204. Providing appropriate stiffness and deformation capacity in the horizontal direction enables the seismic isolation mechanism 2 to effectively consume and absorb seismic energy under the action of an earthquake, thereby reducing the transmission of seismic waves to the upper structure. The protective shell 203 wraps the rubber sheet 204 and the steel sheet 205 therein to protect the internal components from being corroded by external environmental factors, thereby extending the service life of the seismic isolation mechanism 2. When an earthquake occurs, the rubber sheet 204 undergoes shear deformation, and the lead core 207 also undergoes plastic deformation, converting the seismic energy into heat energy for consumption, thereby effectively improving the energy consumption capacity of the seismic isolation mechanism 2, reducing the vibration response of the building during an earthquake, and enhancing the seismic resistance of the building. The sealing plate 206 forms a stable supporting structure on top of the lead core 207.

[0031] Please refer to the attached Figure 1 - Attachment Figure 3 The outer wall of the raft 4 is fixedly connected with a geomembrane 10, the top surface of the raft 4 is provided with a drainage hole 13, the top surface of the raft 4 is fixedly connected with a reinforcing rib 12, the other end of the reinforcing rib 12 is fixedly connected to the outer wall of the column foot 7, the outer wall of the structural steel bar 8 is fixedly connected with a stirrup 14, and the bottom end of the structural steel bar 8 is fixedly connected with an anchoring steel bar 15; Specifically, the geomembrane 10 ensures that it can completely cover the side of the raft 4, prevents corrosive substances in groundwater and soil from directly contacting the concrete structure of the raft 4, and effectively resists the erosion of the raft 4 by the external environment, thereby enhancing the durability and corrosion resistance of the raft 4. The reinforcing ribs 12 extend obliquely from the top surface of the raft 4 to the outer wall of the column foot 7 at a certain angle and spacing, thereby enhancing the connection strength between the raft 4 and the column foot 7, and improving the collaborative working ability of the overall structure under complex stress conditions such as earthquakes, and more effectively dispersing the load transmitted from the column foot 7 to the raft 4, avoiding the occurrence of stress concentration and ensuring the stability of the structure. The stirrups 14 are evenly arranged around the structural steel bars 8 to constrain the structural steel bars 8 to prevent local buckling or lateral deformation of the structural steel bars 8 during the stress process, thereby improving the shear resistance and overall stability of the column foot 7 and ensuring the bearing capacity of the column foot 7 when subjected to complex loads such as axial force, bending moment and shear force.

[0032] Please refer to the attached Figure 3 - Attachment Figure 5 The outer walls of the rubber sheet 204 and the steel sheet 205 are both provided with through holes 16, the inner walls of the through holes 16 are provided with springs 17, the raft 4 is high-strength concrete, slag and fly ash are added to the raft 4, the anchoring steel bars 15 are cast in the raft 4, and the outer wall of the embedded steel plate 11 is provided with an anti-corrosion layer; Specifically, the springs 17 are evenly distributed on the inner walls of the rubber sheet 204 and the steel sheet 205. When the seismic isolation mechanism 2 is subjected to seismic force, the springs 17 will expand and contract as the rubber sheet 204 and the steel sheet 205 deform, further absorbing and dissipating seismic energy and enhancing the seismic isolation effect. Slag and fly ash are added to the raft 4 to improve the microstructure of the concrete, fill the gaps between cement particles, increase the density of the concrete, further enhance the strength and impermeability of the concrete, and enable the raft 4 to better resist the erosion of groundwater and corrosive media. Before pouring the raft 4 concrete, the anchor steel bars 15 are placed in the formwork and poured together with the raft 4.

[0033] Working principle: the soil base 1 is compacted layer by layer for multiple times, the good water permeability of the crushed stone layer 3 can effectively prevent the accumulation of groundwater at the bottom of the foundation, the transverse steel bars 6 and the longitudinal steel bars 9 together constitute the steel skeleton of the raft 4, effectively improving the bending and shear resistance of the raft 4, the structural steel bars 8 form a stable skeleton structure in the column foot 7, enhancing the bearing capacity and seismic performance of the column foot 7, and the prestressed column 5 can improve the crack resistance and overall stability of the raft 4; The interior of the seismic isolation mechanism 2 is composed of multiple layers of rubber sheets 204 and multiple layers of steel sheets 205 alternately stacked. When the weight of the building is transferred to the seismic isolation mechanism 2 through the upper structure, since the rubber sheet 204 and the steel sheet 205 are tightly bonded, the steel sheet 205 can limit the lateral deformation of the rubber sheet 204, so that the seismic isolation mechanism 2 has a large vertical bearing capacity and vertical stiffness, so that it can stably support the weight of the building. The lead core 207 undergoes plastic deformation and converts the seismic energy into heat energy for consumption, thereby effectively improving the energy consumption capacity of the seismic isolation mechanism 2, reducing the vibration response of the building in an earthquake, and enhancing the seismic resistance of the building.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel earthquake-resistant and anti-corrosion building foundation, comprising a rammed earth base (1), characterized in that: A crushed stone layer (3) is arranged on the top of the compacted soil base (1), a raft (4) is arranged on the top of the crushed stone layer (3), a transverse steel bar (6) is fixedly connected to the middle of the raft (4), a longitudinal steel bar (9) is fixedly connected to the middle of the raft (4), a pre-buried steel plate (11) is fixedly connected to the top surface of the raft (4), a column foot (7) is fixedly connected to the top surface of the raft (4), a structural steel bar (8) is arranged inside the column foot (7), a prestressed column (5) is fixedly connected to the bottom of the raft (4), and a seismic isolation mechanism (2) is arranged above the raft (4), and the seismic isolation mechanism (2) is used to absorb vibration energy and isolate vibration.

2. The novel earthquake-resistant and anti-corrosion building foundation according to claim 1 is characterized by: The seismic isolation mechanism (2) comprises a connecting steel plate (201), the bottom surface of the connecting steel plate (201) is fixedly connected to the top surface of the embedded steel plate (11), the top surface of the connecting steel plate (201) is fixedly connected to a limiting column (202), the top surface of the connecting steel plate (201) is fixedly connected to a rubber sheet (204), the top surface of the rubber sheet (204) is fixedly connected to a steel sheet (205), the outer wall of the rubber sheet (204) is fixedly connected to a protective shell (203), the middle part of the rubber sheet (204) is fixedly connected to a lead core (207), and the top surface of the lead core (207) is fixedly connected to a sealing plate (206).

3. The novel earthquake-resistant and anti-corrosion building foundation according to claim 1 is characterized in that: The outer wall of the raft (4) is fixedly connected to a geomembrane (10), and the top surface of the raft (4) is provided with drainage holes (13).

4. The novel earthquake-resistant and anti-corrosion building foundation according to claim 1 is characterized in that: A reinforcing rib (12) is fixedly connected to the top surface of the raft plate (4), and the other end of the reinforcing rib (12) is fixedly connected to the outer wall of the column foot (7).

5. The novel earthquake-resistant and anti-corrosion building foundation according to claim 1 is characterized in that: The outer wall of the structural steel bar (8) is fixedly connected with a stirrup (14), and the bottom end of the structural steel bar (8) is fixedly connected with an anchoring steel bar (15).

6. The novel earthquake-resistant and anti-corrosion building foundation according to claim 2 is characterized in that: The outer walls of the rubber sheet (204) and the steel sheet (205) are both provided with through holes (16), and the inner walls of the through holes (16) are provided with springs (17).

7. The novel earthquake-resistant and anti-corrosion building foundation according to claim 1 is characterized by: The raft plate (4) is made of high-strength concrete, and slag and fly ash are added into the raft plate (4).

8. The novel earthquake-resistant and anti-corrosion building foundation according to claim 5 is characterized by: The anchoring steel bars (15) are cast in the raft slab (4), and the outer wall of the embedded steel plate (11) is provided with an anti-corrosion layer.

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