CN106088764B - A kind of stepped prefabricated assembled circular underground granary of encased steel plate - Google Patents

Abstract

A kind of stepped prefabricated assembled circular underground granary of encased steel plate, the flat shape of the underground granary is circle, including orlop, the prefabricated bulkhead plate of polylith, silo roof, multiple function, reinforcing prop, the bulkhead plate is arc prefabricated chunk, its periphery can be attached by attachment device bulkhead plate with adjacent bulkhead plate, multiple function or reinforcing prop；The multiple function positions bulkhead, its depth anchored into soil is more than orlop depth；It is characterized in that：Multiple function is divided into several sections from top to bottom, first layer bulkhead plate is equipped with the inside of the first segment of the superiors, reinforcing prop is first equipped with the inside of second segment, so that reinforcing prop medial surface is concordant with first layer bulkhead plate medial surface, second layer bulkhead plate is equipped with reinforcing prop medial surface so that first and second layer of bulkhead plate part overlap joint again；With above-mentioned set-up mode so that second and third layer of bulkhead plate part overlap joint, overlaps to bottom one layer of bulkhead plate, form stepped assembled circle underground granary always.

Description

A stepped prefabricated circular underground granary covered with steel plates

technical field

The invention relates to the technical field of underground granaries, in particular to a stepped prefabricated and assembled circular underground granary covered with steel plates.

Background technique

Underground granaries are built under the shallow surface, which can store grain at low temperature all year round, maintain grain quality, inhibit the occurrence of pests, avoid fumigation with toxic chemicals, resist natural damage, and be used for both war and peace. Many experts and scholars agree that it is reasonable to promote the application of underground granaries The new system and new technology of grain storage can realize low-temperature environmental protection, energy saving and land saving, quality assurance and loss reduction, and ecological grain storage.

The existing underground granaries in my country are generally located in general loess areas with low groundwater levels and suitable for sticky areas, such as cave warehouses, trumpet warehouses, double-curved arch warehouses, semi-underground warehouses, and cave-shaped trumpet warehouses; Brick structure, small storage capacity, large floor space and low degree of mechanization.

In order to build a new type of underground granary that can be popularized and applied in areas with high groundwater levels and complex geological conditions, some national patents and documents have also proposed a circular granary, a large underground rectangle surrounded by cylinders and semi-cylinders, and a pile-enclosed compound type. However, there are still some problems to be solved urgently in the popularization and application of the above-mentioned new warehouse types, such as: (1) Underground grain storage warehouses have high standards of waterproof and moisture-proof requirements. Ensure that the warehouse body does not leak or seep within the service life; the coiled material used is easy to age, the construction process is complex and difficult, and construction quality problems are prone to occur. (2) The wet work environment of deep foundation pit has a long construction period. After foundation pit excavation and precipitation, the cast-in-place construction of the warehouse floor and the sliding form construction of the warehouse wall need to be carried out in a wet working environment for a long time, resulting in high labor intensity, long construction period and high construction cost. (3) The cost of foundation pit support is high. For this kind of deep foundation pit, "steel pile + waist beam + water sealing steel plate" foundation pit support is a more economical way, but the cost accounts for 25-30% of the civil construction cost, and the construction cost is relatively high.

The invention whose application number is CN200910207155.1 discloses an underground granary, which includes a roof, a wall and a bottom. The steel plates are connected by steel members to form a combined structure of the warehouse wall to prevent water and moisture. The shape of the wall of the underground granary is straight or curved, such as cylindrical, square, semicircular, etc. The invention solves the waterproof and moisture-proof problem of the bottom plate of the warehouse through the outsourcing steel plate. At the same time, when the construction is carried out at the bottom of the warehouse, the steel plate is used as a formwork to speed up the construction and reduce the construction cost. However, the construction is pouring on site, and this construction method requires excavation of the foundation pit, so the overall construction cost is high and the construction period is long. insufficient.

The invention with application number CN200910207154.7 discloses an underground granary, including a roof, a wall and a bottom. The wall is divided into an inner wall and an outer wall. A cavity is formed between them, and the cavity is used for detection and repair of water leakage in the underground granary, and for ventilation of the underground granary and detection of grain conditions. The granary of the invention also needs foundation pit excavation, which has disadvantages such as troublesome construction, high construction cost, and long construction period.

The prefabricated structure is one of the effective ways to realize the industrialization of building structures and building energy saving and emission reduction. For a long time, concrete buildings mainly adopt the traditional operation method of on-site construction, with a low degree of industrialization, water consumption, energy consumption, artificial waste, and sewage discharge. The amount is large, which does not conform to the national sustainable development policy of energy conservation and environmental protection. The prefabricated structure can be prefabricated in the factory and assembled on site to realize the industrialization of building structures. At the same time, it can effectively improve the efficiency of materials in building energy saving and structural performance, save energy and resources, reduce construction waste and adverse effects on the environment, and reduce construction site restrictions. Wait. Therefore, in order to provide a "quick, good and economical" new type of underground grain storage, it has become necessary to develop a prefabricated new type of underground storage.

Contents of the invention

The purpose of the present invention is to provide a stepped prefabricated assembled circular underground granary with outsourcing steel plates. The prefabricated and assembled underground granary adopts outsourced steel plates to replace the waterproof coiled material and the outer steel bar of the warehouse wall, and has better waterproof and anti-seepage effects. and comprehensive benefits; prefabricated warehouse wall panels can be standardized in prefabricated component factories, the quality of processing and manufacturing can be effectively controlled and energy-saving and environmentally friendly, prefabricated products are assembled on site, mechanized installation and construction, and cross-construction can be used to shorten the construction period. In addition, the prefabricated warehouse structure can be used as a foundation pit support system, saving foundation pit support costs and reducing construction investment.

The solution of the present invention is: a prefabricated assembled underground granary, the planar shape of which is circular, including the bottom of the granary, a plurality of prefabricated wall panels, the roof, multifunctional columns, and reinforced columns. The wall panels are arc-shaped prefabricated plates with connecting devices around them, through which the warehouse wall panels can be connected with adjacent warehouse wall panels, multi-functional columns or reinforced columns; the multi-functional columns position the warehouse walls and are anchored into the soil The depth of the center is greater than the depth of the bottom of the warehouse, and it is the main force-bearing member for bearing earth pressure, grain pressure and buoyancy resistance; The inner side of the second section of the warehouse wall is provided with a reinforcing column first, so that the inner side of the reinforced column is flush with the inner side of the first layer of the warehouse wall, and then the second layer of the warehouse wall is arranged on the inner side of the reinforcing column, so that the first layer of the warehouse 1. The wall panels of the second storey are partially overlapped; with the above-mentioned setting method, the wall panels of the second and third storeys are partially overlapped, and they are overlapped all the way to the wall panels of the bottom storey to form a stepped assembled circular underground granary .

The present invention is characterized in that the multifunctional column and the reinforced column adopt steel columns or concrete columns provided with steel embedded parts, and the multifunctional column and the reinforced column are connected by bolts or welding seams. Multifunctional columns and reinforced columns adopt steel columns or concrete columns with steel embedded parts to facilitate their welding connection with prefabricated warehouse wall panels to form a whole, so as to better bear force, waterproof and moisture-proof.

The present invention is also characterized in that the prefabricated silo wall is an integral structure in which the outer steel plate and the inner concrete slab are combined, the outer steel plate and the inner concrete are connected by anchors, the inner side of the inner concrete is provided with a steel mesh, and there is a L on the upper side of the silo wall. There are U-shaped wrapping corners on the left, right and lower right sides of the warehouse wall. In this way, the outsourcing steel plate of the prefabricated warehouse wall can replace the waterproof coiled material and the outer steel bar of the warehouse wall, which has good waterproof, anti-seepage effect and comprehensive benefits; the steel plate and concrete are connected by anchors to form a steel plate concrete composite structure prefabricated warehouse wall , it not only avoids the heavy work of tying steel bars on the warehouse wall, saves the time for making the warehouse wall, reduces labor costs, but also reduces the number and cost of formwork used for pouring ordinary reinforced concrete structures; in addition, prefabricated warehouse panels can be used in Standardized production of prefabricated component factories, the quality of processing and manufacturing can be effectively controlled and energy-saving and environmentally friendly. Prefabricated products are assembled on site, mechanized installation and construction, cross-construction is possible, and the construction period is shortened; finally, the prefabricated warehouse wall with combined structure has high bearing capacity and crack resistance. Good, strong energy dissipation capacity, good ductility and other advantages. The L-shaped or U-shaped wrap angle on the side of the warehouse wall can easily make the warehouse wall and the adjacent prefabricated warehouse wall and multi-functional column or reinforcement column welded and connected.

The present invention is also characterized in that the prefabricated silo wall is a structure in which the outer steel plate and the inner concrete slab are combined into an integral structure, the outer steel plate and the inner concrete slab are connected by anchors, and the inner side of the inner concrete slab is provided with a steel mesh. There are L-shaped steel ladle angles on the upper side and U-shaped steel ladle angles on the lower side. The left and right sides of the warehouse wall are covered with steel plates, and the left end is provided with a convex trapezoidal or semi-elliptical plug, and the right end is provided with a trapezoidal or semi-elliptical groove. In this way, the outsourcing steel plate of the prefabricated warehouse wall can replace the waterproof coiled material and the outer steel bar of the warehouse wall, which has good waterproof, anti-seepage effect and comprehensive benefits; the steel plate and concrete are connected by anchors to form a steel plate concrete composite structure prefabricated warehouse wall , it not only reduces the heavy work of tying steel bars on the warehouse wall, saves the time for making the warehouse wall, reduces labor costs, but also reduces the number and cost of formwork used for pouring ordinary reinforced concrete structures; in addition, prefabricated warehouse panels can be used in Standardized production of prefabricated component factories, the quality of processing and manufacturing can be effectively controlled and energy-saving and environmentally friendly. Prefabricated products are assembled on site, mechanized installation and construction, cross-construction is possible, and the construction period is shortened; finally, the prefabricated warehouse wall with combined structure has high bearing capacity and crack resistance. Good, strong energy dissipation capacity, good ductility and other advantages. There are L-shaped steel cladding angles on the top of the warehouse wall and U-shaped steel cladding angles on the bottom, and steel plates are wrapped on the left and right sides of the warehouse wall, so that the warehouse wall can be conveniently adjacent to the surrounding prefabricated warehouse wall and positioning columns or Reinforcing columns are welded. The left end of the prefabricated warehouse wall panel is provided with a convex trapezoidal or semi-elliptical plug, and the right end is provided with a trapezoidal or semi-elliptical groove, which can facilitate the connection of adjacent prefabricated warehouse wall panels, thereby speeding up the construction speed and greatly shortening the construction period. .

The present invention is characterized in that the prefabricated warehouse wall boards are horizontal and flush in the circumferential direction, and the outer side thereof is welded and connected with the multifunctional column or the reinforced column, and the inner side of the adjacent prefabricated warehouse wall boards is connected with connecting steel plates, and the connecting steel plates and the prefabricated warehouse wall boards are connected by welding; Waterproof concrete of the same or higher strength level as the prefabricated warehouse wall is poured in the cavity surrounded by the multifunctional column or reinforced column, the adjacent prefabricated warehouse wall board and the connecting steel plate. In this way, after the outer side of the prefabricated warehouse wall is welded with the multi-functional column or reinforced column, it is ensured that the outer steel plate is kept as a whole in the circumferential direction, so that the prefabricated warehouse wall can be effectively waterproofed; in addition, the connecting steel plate is used on the inner side of the warehouse wall Welding connection, on the one hand, adds a second waterproof measure at the joint, and makes the multi-functional column or reinforced column and the prefabricated warehouse wall and the concrete between them form an integral structure, which makes the force more reasonable and the joint construction easier convenient.

The present invention is also characterized in that the circumferential direction of the prefabricated warehouse wall boards is horizontal, and the convex trapezoidal or semi-elliptical plugs of each prefabricated warehouse wall board are inserted into the concave trapezoidal or semi-elliptical slots of the adjacent prefabricated warehouse wall boards; The prefabricated warehouse wall panels are welded to the multifunctional columns or reinforced columns, and the vertical joints on the inner side of the adjacent prefabricated warehouse wall panels are directly connected by butt welding and/or welded by connecting steel plates. Firstly, weld the outer sides of the left and right ends of the first prefabricated silo wall to the multifunctional column or reinforced column, and then insert the convex trapezoidal or semi-elliptical plug at the left end of the adjacent prefabricated silo wall on the right side into the adjacent silo wall The concave trapezoidal or semi-elliptical slot of the board is welded and connected, and the concave trapezoidal or semi-elliptical slot at the right end is welded to the multi-functional column or reinforced column, and the installation is carried out in sequence according to the above welding method until the prefabricated warehouse wall of this layer is completed board installation. In this way, not only can the prefabricated warehouse wall and the multifunctional column or reinforced column form an integral structure to bear the force together, but also the prefabricated warehouse wall can be welded to form a closed whole in the ring direction to effectively waterproof, moisture-proof and seepage-proof; The slot-type connection of the adjacent prefabricated warehouse wall panels makes the joint form and construction simpler, thereby speeding up the construction speed and greatly shortening the construction period.

The present invention is also characterized in that the prefabricated warehouse wall plate and the lower two layers are vertically dislocated and overlapped, and the overlapping parts of the upper and lower layers of the warehouse wall plate are welded by full-length fillet welding. The prefabricated warehouse wall panel and the lower two-layer vertical dislocation overlapping method make the construction of the connection between the upper and lower adjacent warehouse wall panels very convenient, and can better ensure the construction quality; the overlapping parts of the upper and lower warehouse wall panels On the one hand, the full-length fillet welds make the upper and lower steel plates seamlessly welded to form a whole, so as to prevent groundwater from flowing into or seeping into the interior of the underground warehouse; Functional columns or reinforced columns jointly resist external forces such as earth pressure.

The present invention is also characterized in that the upper and lower layers of the prefabricated warehouse wall panels are provided with oblique reinforcement plates at the dislocation laps of the upper and lower layers, and the reinforcement plates are welded to the upper and lower warehouse wall panels. When the grain is out of the warehouse, there will be grain at the upper and lower two-layer dislocation laps of the prefabricated warehouse wall panels, and it is difficult to clean the grain here; an inclined reinforcing plate with a certain slope is provided at the lap joints. Self-flowing into the warehouse, on the other hand, it can provide a second waterproof guarantee for the overlap of the warehouse wall, and at the same time, the connection between the upper and lower warehouse walls can be strengthened in terms of structural design.

The present invention is characterized in that the upper and lower layers of the prefabricated warehouse wall panels are provided with stiffening ribs at intervals in the circumferential direction; The wall panels of the warehouse are welded vertically; the stiffeners are multi-piece, and are evenly distributed along the circumferential direction of the overlapping parts of the upper and lower warehouse wall panels. The stiffening ribs provided at the dislocation laps of the upper and lower layers of the prefabricated warehouse wall panels along the circumferential interval are to strengthen the connection between the upper and lower adjacent warehouse wall panels. The full-length fillet welds of the overlapping parts of the two-story warehouse wall panels do not conflict in space; the stiffeners are welded vertically to the adjacent upper and lower prefabricated warehouse wall panels, so that the joints of the warehouse walls improve their ability to resist bending moments and shear forces .

The invention is characterized in that the bottom of the warehouse adopts a double-sided steel plate concrete composite structure, and the upper and lower steel plates on the bottom plate and the concrete between them are connected by anchor nails. The steel plate in the warehouse wall of this double-sided composite structure is used as the formwork of the warehouse floor and replaces the steel bar, which saves the construction cost of the warehouse wall, reduces the construction difficulty of the warehouse wall, and speeds up the overall construction speed; the double-layer steel plate concrete composite structure improves the rigidity of the warehouse wall. and strength, effectively resisting soil pressure and grain pressure, which is conducive to the expansion of the underground warehouse to a deeper and larger direction, which increases the scope of application of the warehouse type, and is more conducive to the waterproof and moisture-proof problems of the granary.

The present invention is also characterized in that the warehouse roof adopts a concrete-steel composite structure. In this way, the above-mentioned structure fully exerts the compressive resistance of concrete and the tensile capacity of steel plates, making the stress of the roof structure of large-span warehouses more reasonable, and steel plates can be used as formwork during construction, which greatly reduces the difficulty of construction and can also speed up construction. speed.

The present invention is also characterized in that the multifunctional column and the reinforcing column adopt hollow columns or solid columns with straight or curved cross-sections.

The present invention is characterized in that the construction method includes the following steps: (1) driving the multifunctional column into the ground at a predetermined position according to the design requirements to a certain depth; (2) excavating the first layer of soil in the area surrounded by the multifunctional column; (3) ) After excavating the first layer of soil, install the first layer of prefabricated warehouse wall panels on the inner side of the multifunctional column; (4) After installing the first layer of prefabricated warehouse wall panels, continue to dig down the second layer of soil; (5) ) Install the first layer of reinforced columns inside the multifunctional columns; (6) Install the second layer of prefabricated warehouse wall panels inside the first layer of reinforced columns; (7) According to the construction method of the above steps (4)-(6), Install the prefabricated silo wall panels in sequence until the bottom of the silo; (8) carry out the construction of the bottom of the silo; (9) finally carry out the construction of the roof and beams of the silo, that is, complete the overall structure of the underground granary. The depth of the multifunctional columns driven into the ground is determined based on various factors such as the bearing capacity of the foundation, buoyancy, soil pressure on the warehouse wall, and lateral pressure of the grain. When the bearing capacity of the foundation cannot meet the engineering requirements, the multifunctional columns and reinforced columns can replace the piles vertical pressure from the silo; in addition, the multi-functional columns and reinforcement columns can also replace the uplift piles to resist the buoyancy of the groundwater on the silo; Each layer of the prefabricated warehouse wall panels is vertically vertical and forms a circular ring in the circumferential direction, so that the force bearing is more reasonable; after the construction of the multifunctional column is completed, it is installed in layers from top to bottom along the height; after installing the prefabricated warehouse wall panels on each layer During excavation, the space whose height is greater than or equal to the height of the prefabricated silo wall and whose diameter is greater than or equal to the outer diameter of the silo should be excavated first, and at the same time ensure that the soil does not collapse during the excavation process, so as to leave a construction space for the installation of the prefabricated silo wall. Ensure the safe and smooth construction of the silo wall; when the excavation depth is below the groundwater level, dewater first and then excavate; after installing each layer of prefabricated silo wall, the soil around the Grouting in between will ensure that when the next layer of soil is excavated, the soil of this layer will not collapse, thereby ensuring the safety of the excavation of the lower layer of soil. The following two methods are used for the installation of each layer of prefabricated warehouse wall panels: (1) When the circumferential direction of each layer of prefabricated warehouse wall panels is connected by post-casting joints, when installing each layer of prefabricated warehouse wall panels, firstly connect the warehouse wall panels with the corresponding Weld the adjacent multi-functional columns or reinforced columns to ensure the reliable connection between the prefabricated warehouse wall panels and the multi-functional columns or reinforced columns, then weld the horizontally adjacent prefabricated warehouse wall panels with connecting steel plates, and finally pour and Waterproof concrete with the same or higher strength grade as the prefabricated silo wall. (2) When the ring direction of each layer of prefabricated warehouse wall panels is connected by slots, firstly, weld the left and right outer sides of the first prefabricated warehouse wall panel with the multi-functional column or reinforced column, and then connect its right side to the adjacent The left-end convex trapezoidal or semi-elliptical plug of the prefabricated warehouse wall is inserted into the concave trapezoidal or semi-elliptical slot of the adjacent warehouse wall and welded, and the right-side concave trapezoidal or semi-elliptic slot is connected to the multi-functional column or Welding of reinforced columns shall be installed in sequence according to the above welding method until the installation of the prefabricated warehouse wall panels of this layer is completed. According to the above construction method, the soil body is excavated and the prefabricated silo wall panels are installed sequentially from top to bottom. The cylindrical silo body structure formed by each layer of silo wall panels can be used as the foundation pit support system. The combination of the body structure and the foundation pit support system not only saves the cost of foundation pit support alone, greatly reduces the construction investment, but also greatly shortens the construction period of the entire project.

Description of drawings

Figure 1 Layout plan of the first type of underground warehouse

Figure 2 Layout plan of the second type of underground warehouse

Figure 3 Sectional layout of the first and second types of underground warehouses

Figure 4 Schematic diagram of the first and second types of monolithic prefabricated silo wall panels

Figure 5 Schematic diagram of the layout of the first section of the precast concrete slab of the first type

Figure 6 Schematic diagram of the layout of precast concrete slabs in the second section and the following sections of the first type

Figure 7 Schematic diagram of the first and second warehouse wall nodes

Figure 8 Schematic diagram of the plane layout of the first section of the second type of precast concrete slab

Figure 9 Plane layout of precast concrete slabs in the second section and the following sections of the second category

In the attached drawings: 1 is a multifunctional column; 2 is a reinforced column; 3 is a prefabricated warehouse wall; 4 is a warehouse roof; 5 is a warehouse bottom; 6 is a connecting steel plate; 7 is a stiffening rib; 10 is the grain inlet and outlet; 11 is the covering soil; 12 is waterproof concrete; 13 is the outer steel plate.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiment one

As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 7: this embodiment provides a prefabricated circular underground granary in the shape of an outsourcing steel plate ladder. It includes a warehouse bottom 5, a plurality of prefabricated warehouse wall panels 3, a warehouse roof 4, a multifunctional column 1, and a reinforced column 2. The warehouse wall panels 3 are arc-shaped prefabricated panels with connecting devices around them. It can be connected with adjacent warehouse wall boards, multifunctional columns 1 or reinforced columns 2; the multifunctional column 1 positions the warehouse walls. The multi-functional column 1 is divided into several sections from top to bottom, the inner side of the first section of the uppermost layer is provided with a first layer of warehouse wall plate 3, and the inner side of the second section is first provided with a reinforcing column 2, so that the inner surface of the reinforcing column 2 and the first layer The inner side of the warehouse wall plate 3 is flush, and the second layer of warehouse wall plate 3 is provided on the inner side of the reinforcement column 2, so that the first and second layer of warehouse wall plates are partially overlapped; with the above-mentioned setting method, the second and third layers The wall panels of the layer warehouses are partially overlapped until they reach the bottom layer of the warehouse wall panels to form a stepped assembled circular underground granary.

The prefabricated silo wall panel 3 is an integral structure in which the outer steel plate 13 and the inner concrete slab are combined. The outer steel plate 13 and the inner concrete slab are connected by anchors, and the inner side of the inner concrete slab is provided with a steel mesh. There are L-shaped ladle angles, and there are U-shaped ladle angles on the left, right and bottom sides of the warehouse wall.

The prefabricated warehouse wall panel 3 is horizontally aligned in the circumferential direction, and its outer side is welded and connected with the multifunctional column 1 or the reinforced column 2. The inner side of the adjacent prefabricated warehouse wall panel 3 is connected with the connecting steel plate 6, and the connecting steel plate 6 and the prefabricated warehouse wall panel 3 are welded. Connection; pouring waterproof concrete 12 of the same strength level as the prefabricated warehouse wall 3 or one level higher strength level in the cavity surrounded by the multifunctional column 1 or the reinforced column 2 and the adjacent prefabricated warehouse wall 3 and the connecting steel plate 6

The upper and lower layers of the prefabricated warehouse wall panels 3 are vertically dislocated and overlapped, and the overlapping parts of the upper and lower layers of the warehouse wall panels are welded with a full-length fillet weld 9. The upper and lower layers of the prefabricated warehouse wall panels 3 are overlapped with oblique reinforcing plates 8 , and the oblique reinforcing plates 8 are welded to the upper and lower prefabricated warehouse wall panels 3 . The upper and lower layers of the prefabricated warehouse wall panel 3 are provided with stiffening ribs 7 at intervals along the ring; The prefabricated warehouse wall panels (3) are all welded vertically; the stiffeners 7 are multi-piece, and are evenly distributed along the circumferential direction of the overlapping parts of the upper and lower prefabricated warehouse wall panels 3 .

Embodiment two

As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 7 and Fig. 8: this embodiment provides a prefabricated circular underground granary in the shape of a stepped outer cladding steel plate. It includes a warehouse bottom 5, a plurality of prefabricated warehouse wall panels 3, a warehouse roof 4, a multifunctional column 1, and a reinforced column 2. The warehouse wall panels 3 are arc-shaped prefabricated panels with connecting devices around them. It can be connected with adjacent warehouse wall boards, multifunctional columns 1 or reinforced columns 2; the multifunctional column 1 positions the warehouse walls. The multi-functional column 1 is divided into several sections from top to bottom, the inner side of the first section of the uppermost layer is provided with a first layer of warehouse wall plate 3, and the inner side of the second section is first provided with a reinforcing column 2, so that the inner surface of the reinforcing column 2 and the first layer The inner side of the warehouse wall plate 3 is flush, and the second layer of warehouse wall plate 3 is provided on the inner side of the reinforcement column 2, so that the first and second layer of warehouse wall plates are partially overlapped; with the above-mentioned setting method, the second and third layers The wall panels of the layer warehouses are partially overlapped until they reach the bottom layer of the warehouse wall panels to form a stepped assembled circular underground granary.

The prefabricated warehouse wall panel 3 is a structure in which the outer steel plate 13 and the inner concrete slab are combined into an integral structure. The outer steel plate (13) is connected with the inner concrete slab by anchors, and the inner side of the inner concrete slab is provided with a steel mesh. There are L-shaped steel ladle angles on the upper side and U-shaped steel ladle angles on the lower side. The left and right sides of the warehouse wall are covered with steel plates, and the left end is provided with a convex trapezoidal or semi-elliptical plug, and the right end is provided with a trapezoidal or semi-elliptical groove. .

The prefabricated warehouse wall panels 3 are horizontally aligned in the circumferential direction, and the convex trapezoidal or semi-elliptical plugs of each prefabricated warehouse wall panel 3 are inserted into the concave trapezoidal or semi-elliptical slots of the adjacent prefabricated warehouse wall panels 3; The prefabricated warehouse wall panel 3 is welded to the multifunctional column 1 or the reinforced column 2, and the vertical seam on the inner side of the adjacent prefabricated warehouse wall panel 3 is directly connected by butt welding and/or welded by connecting steel plates.

The upper and lower layers of the prefabricated warehouse wall panels 3 are vertically dislocated and overlapped, and the overlapping parts of the upper and lower layers of the warehouse wall panels are welded with a full-length fillet weld 9. The upper and lower layers of the prefabricated warehouse wall panels 3 are overlapped with oblique reinforcing plates 8 , and the oblique reinforcing plates 8 are welded to the upper and lower prefabricated warehouse wall panels 3 . The upper and lower layers of the prefabricated warehouse wall panel 3 are provided with stiffening ribs 7 at intervals along the ring; The prefabricated warehouse wall panels (3) are all welded vertically; the stiffeners 7 are multi-piece, and are evenly distributed along the circumferential direction of the overlapping parts of the upper and lower prefabricated warehouse wall panels 3 .

Embodiment three:

As shown in Figures 1 and 3: this embodiment provides a prefabricated circular underground granary in the shape of a stepped outer cladding steel plate. It includes a warehouse bottom 5, a plurality of prefabricated warehouse wall panels 3, a warehouse roof 4, a multifunctional column 1, and a reinforced column 2. The warehouse wall panels 3 are arc-shaped prefabricated panels with connecting devices around them. It can be connected with adjacent warehouse wall boards, multifunctional columns 1 or reinforced columns 2; the multifunctional column 1 positions the warehouse walls. The multi-functional column 1 is divided into several sections from top to bottom, the inner side of the first section of the uppermost layer is provided with a first layer of warehouse wall plate 3, and the inner side of the second section is first provided with a reinforcing column 2, so that the inner surface of the reinforcing column 2 and the first layer The inner side of the warehouse wall plate 3 is even, and the second layer of warehouse wall plate 3 is arranged on the inner surface of the reinforcement column 2, so that the first and second layer of warehouse wall plates are partially overlapped; with the above-mentioned setting method, the second and third layers The wall panels of the layer warehouses are partially overlapped until they reach the bottom layer of the warehouse wall panels to form a stepped assembled circular underground granary.

The warehouse bottom 5 is a conical structure, and the warehouse bottom 5 adopts a double-sided steel plate concrete composite structure. In this steel plate concrete composite structure, the steel plate is used as the formwork of the warehouse floor and replaces the steel bars. It does not need to lay steel bars during construction, which saves the construction cost of the warehouse wall, reduces the construction difficulty of the warehouse bottom, and speeds up the overall construction speed; the double-layer steel plate concrete composite structure It improves the stiffness and strength of the silo wall, effectively resists earth pressure and grain pressure, and is conducive to the development of underground granaries in a deeper and larger direction, which increases the scope of application of this type of silo, and is more conducive to the waterproof and moisture-proof problems of the granary.

The warehouse roof 4 adopts a double-sided steel plate concrete composite structure, the warehouse roof 4 is provided with a grain inlet and outlet 10, and the warehouse roof 4 is provided with a covering soil 11. The double-sided steel plate concrete composite structure fully exerts the compressive resistance of concrete and the tensile capacity of steel plates, making the stress of the roof structure of large-span warehouses more reasonable, and the steel plates can be used as formwork during construction, which greatly reduces the difficulty of construction and at the same time It can speed up the construction speed. The entrance and exit of grain are equipped with modern grain entry and exit equipment to facilitate the storage and extraction of grain.

The underground granary can realize the storage of solid particles, powder materials or liquid materials. The underground granary has good airtightness and support, and can also realize the storage of powder and liquid materials. With different feeding and discharging equipment, it is widely used.

Embodiment four

This embodiment also provides a construction method for a stepped prefabricated assembled circular underground granary covered with steel plates, including the following steps:

1) Drive the multifunctional column 1 into the ground to a certain depth at a predetermined position according to the design requirements;

2) Excavating the first layer of soil in the area surrounded by the multifunctional column 1;

3) After excavating the first layer of soil, install the first layer of prefabricated warehouse wall panels 3 on the inner side of the multifunctional column 1;

4) After installing the first layer of prefabricated warehouse wall panels 3, continue to dig down the second layer of soil;

5) Install the first layer of reinforcement column 2 inside the multifunctional column 1;

6) Install the second layer of prefabricated warehouse wall panels 3 on the inner side of the first layer of reinforcement columns 2;

7) According to the construction method of steps 4)-6) above, install the prefabricated warehouse wall panels 3 downwards in sequence until the bottom of the warehouse;

8) Carry out the construction of warehouse floor 5;

9) Finally, the construction of the warehouse roof 3 is carried out, that is, the overall structure of the underground granary is completed.

The depth of the multifunctional columns driven into the ground is determined based on various factors such as the bearing capacity of the foundation, buoyancy, soil pressure on the warehouse wall, and lateral pressure of the grain. When the bearing capacity of the foundation cannot meet the engineering requirements, the multifunctional columns and reinforced columns can replace the piles vertical pressure from the silo; in addition, the multi-functional columns and reinforcement columns can also replace the uplift piles to resist the buoyancy of the groundwater on the silo; Each layer of the prefabricated warehouse wall panels is vertically vertical and forms a circular ring in the circumferential direction, so that the force bearing is more reasonable; after the construction of the multifunctional column is completed, it is installed in layers from top to bottom along the height; after installing the prefabricated warehouse wall panels on each layer During excavation, the space whose height is greater than or equal to the height of the prefabricated silo wall and whose diameter is greater than or equal to the outer diameter of the silo should be excavated first, and at the same time ensure that the soil does not collapse during the excavation process, so as to leave a construction space for the installation of the prefabricated silo wall. Ensure the safe and smooth construction of the silo wall; when the excavation depth is below the groundwater level, dewater first and then excavate; after installing each layer of prefabricated silo wall, the soil around the Grouting in between will ensure that when the next layer of soil is excavated, the soil of this layer will not collapse, thereby ensuring the safety of the excavation of the lower layer of soil. The following two methods are used for the installation of each layer of prefabricated warehouse wall panels: a. When the circumferential direction of each layer of prefabricated warehouse wall panels is connected by post-casting joints, when installing each layer of prefabricated warehouse wall panels, firstly connect the warehouse wall panels with the adjacent Weld multifunctional columns or reinforced columns to ensure reliable connection between prefabricated warehouse panels and multifunctional columns or reinforced columns, then weld horizontally adjacent prefabricated warehouse panels with connecting steel plates, and finally pour and prefabricate between horizontally adjacent prefabricated warehouse panels Waterproof concrete with the same or higher strength grade as the silo wall. b. When the ring direction of each layer of prefabricated warehouse wall panels is connected by slots, first, weld the left and right outer sides of the first prefabricated warehouse The convex trapezoidal or semi-elliptical plug at the left end of the warehouse wall is inserted into the concave trapezoidal or semi-elliptical slot of the adjacent warehouse wall and welded, and the concave trapezoidal or semi-elliptical slot at the right end is connected to the multi-functional column or reinforcement For column welding, the installation shall be carried out sequentially according to the above welding method until the installation of the prefabricated warehouse wall panels of this layer is completed. According to the above construction method, the soil body is excavated and the prefabricated silo wall panels are installed sequentially from top to bottom. The cylindrical silo body structure formed by each layer of silo wall panels can be used as the foundation pit support system. The combination of the body structure and the foundation pit support system not only saves the cost of foundation pit support alone, greatly reduces the construction investment, but also greatly shortens the construction period of the entire project.

Embodiment five

As shown in Figures 1 and 3: this embodiment provides a prefabricated circular underground granary in the shape of a stepped outer cladding steel plate. It includes a warehouse bottom 5, a plurality of prefabricated warehouse wall panels 3, a warehouse roof 4, a multifunctional column 1, and a reinforced column 2. The warehouse wall panels 3 are arc-shaped prefabricated panels with connecting devices around them. It can be connected with adjacent warehouse wall boards, multifunctional columns 1 or reinforced columns 2; the multifunctional column 1 positions the warehouse walls. The multi-functional column 1 is divided into several sections from top to bottom, the inner side of the first section of the uppermost layer is provided with a first layer of warehouse wall plate 3, and the inner side of the second section is first provided with a reinforcing column 2, so that the inner surface of the reinforcing column 2 and the first layer The inner side of the warehouse wall plate 3 is even, and the second layer of warehouse wall plate 3 is arranged on the inner surface of the reinforcement column 2, so that the first and second layer of warehouse wall plates are partially overlapped; with the above-mentioned setting method, the second and third layers The wall panels of the layer warehouses are partially overlapped until they reach the bottom layer of the warehouse wall panels to form a stepped assembled circular underground granary.

The outer surface of the warehouse wall 3 is sprayed with a protective coating, and the protective coating includes the following materials in parts by weight: 115 parts of petroleum asphalt, 7 parts of glass fiber, 8 parts of bentonite, 6 parts of emulsifier, and 1.5 parts of dispersant , 1.5 parts of stabilizer, 25 parts of organic fluorine modified styrene-acrylic emulsion, 2.5 parts of antifreeze.

The emulsifier adopts hydrogenated tallow amine, the dispersant adopts monoglyceride stearate, the stabilizer adopts sulfate, and the antifreeze agent adopts ethylene glycol.

Embodiment six

As shown in Figures 1 and 3: this embodiment provides a prefabricated circular underground granary in the shape of a stepped outer cladding steel plate. It includes a warehouse bottom 5, a plurality of prefabricated warehouse wall panels 3, a warehouse roof 4, a multifunctional column 1, and a reinforced column 2. The warehouse wall panels 3 are arc-shaped prefabricated panels with connecting devices around them. It can be connected with adjacent warehouse wall boards, multifunctional columns 1 or reinforced columns 2; the multifunctional column 1 positions the warehouse walls. The multi-functional column 1 is divided into several sections from top to bottom, the inner side of the first section of the uppermost layer is provided with a first layer of warehouse wall plate 3, and the inner side of the second section is first provided with a reinforcing column 2, so that the inner surface of the reinforcing column 2 and the first layer The inner side of the warehouse wall plate 3 is even, and the second layer of warehouse wall plate 3 is arranged on the inner surface of the reinforcement column 2, so that the first and second layer of warehouse wall plates are partially overlapped; with the above-mentioned setting method, the second and third layers The wall panels of the layer warehouses are partially overlapped until they reach the bottom layer of the warehouse wall panels to form a stepped assembled circular underground granary.

The outer surface of the warehouse wall 5 is sprayed with a protective coating, and the protective coating includes the following materials in parts by weight: 110 parts of petroleum asphalt, 10 parts of glass fiber, 9 parts of bentonite, 7.5 parts of emulsifier, and 2 parts of dispersant , 2 parts of stabilizer, 30 parts of organic fluorine modified styrene-acrylic emulsion, 3 parts of antifreeze.

The emulsifier adopts hydrogenated tallow amine, the dispersant adopts monoglyceride stearate, the stabilizer adopts sulfate, and the antifreeze agent adopts ethylene glycol.

Embodiment seven

As shown in Figures 1 and 3: this embodiment provides a prefabricated circular underground granary in the shape of a stepped outer cladding steel plate. It includes a warehouse bottom 5, a plurality of prefabricated warehouse wall panels 3, a warehouse roof 4, a multifunctional column 1, and a reinforced column 2. The warehouse wall panels 3 are arc-shaped prefabricated panels with connecting devices around them. It can be connected with adjacent warehouse wall boards, multifunctional columns 1 or reinforced columns 2; the multifunctional column 1 positions the warehouse walls. The multi-functional column 1 is divided into several sections from top to bottom, the inner side of the first section of the uppermost layer is provided with a first layer of warehouse wall plate 3, and the inner side of the second section is first provided with a reinforcing column 2, so that the inner surface of the reinforcing column 2 and the first layer The inner side of the warehouse wall plate 3 is even, and the second layer of warehouse wall plate 3 is arranged on the inner surface of the reinforcement column 2, so that the first and second layer of warehouse wall plates are partially overlapped; with the above-mentioned setting method, the second and third layers The wall panels of the layer warehouses are partially overlapped until they reach the bottom layer of the warehouse wall panels to form a stepped assembled circular underground granary.

The outer surface of the warehouse wall 5 is sprayed with protective paint, and the protective paint includes the following materials in parts by weight: 105 parts of petroleum asphalt, 13 parts of glass fiber, 10 parts of bentonite, 9 parts of emulsifier, and 2.5 parts of dispersant , 2.5 parts of stabilizer, 35 parts of organic fluorine modified styrene-acrylic emulsion, 3.5 parts of antifreeze.

The emulsifier adopts hydrogenated tallow amine, the dispersant adopts monoglyceride stearate, the stabilizer adopts sulfate, and the antifreeze agent adopts ethylene glycol.

Embodiments 5 to 7 provide special protective paint for the outer surface of the warehouse wall, which can protect and prevent the warehouse wall from seepage and seal the warehouse wall. It can be sprayed or sprayed when the warehouse wall is prefabricated. Spraying when assembling the warehouse wall on site fundamentally solves technical problems such as corners, gaps, and joints with irregular structures such as leakage, and enhances the waterproof performance of the underground granary. Glass fiber is added to the protective coating, which greatly increases the toughness and tensile strength of the coating, delays the cracking time of the coating, increases its service life, and also has a certain supporting effect on the warehouse wall. The added antifreeze can reduce the damage of low temperature to the protective coating and ensure the safe operation of the underground granary in winter in cold regions.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the present invention without limitation, other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and spirit of the technical solution of the present invention All should be included in the scope of the claims of the present invention.

Claims (10)

1. a kind of prefabricated assembled underground granary, the flat shape of the underground granary is prefabricated for circle, including orlop (5), polylith Bulkhead plate (3), silo roof (4), multiple function (1), reinforcing prop (2), the bulkhead plate (3) are arc prefabricated chunk, and periphery has Attachment device, can be attached by attachment device bulkhead plate with adjacent bulkhead plate, multiple function (1) or reinforcing prop (2)；It is described Multiple function (1) positions bulkhead, its depth anchored into soil is more than orlop (5) depth, is subject to soil pressure, grain pressure The main bearing member of power and resistance buoyancy；It is characterized in that：Multiple function (1) is divided into several sections from top to bottom, and the of the superiors One section of inner side is equipped with first layer bulkhead plate (3), and second segment inner side is first equipped with reinforcing prop (2) so that reinforcing prop (2) medial surface and the One layer of bulkhead plate (3) medial surface is concordant, then is equipped with second layer bulkhead plate (3) in reinforcing prop (2) medial surface so that first and second layer Bulkhead plate part overlaps；With above-mentioned set-up mode so that second and third layer of bulkhead plate part overlap joint, overlaps to bottom always One layer of bulkhead plate, forms stepped assembled circle underground granary.

2. underground granary as claimed in claim 1, it is characterised in that：The multiple function (1) and reinforcing prop (2) uses steel Column or the concrete column equipped with steel embedded part, multiple function (1) are connected with reinforcing prop (2) by bolt or soldered.

3. underground granary as claimed in claim 1, it is characterised in that：The prefabricated bulkhead plate (3) for outside plate (13) and The concrete slab of inner side combines integral structure, and outside plate (13) is connected with inner side concrete slab using holdfast, and inner side is mixed Inner side in concrete board is equipped with bar-mat reinforcement, has L-type steel cornerite in bulkhead plate top, has on the bulkhead plate left side, the right and U below Shaped steel cornerite.

4. underground granary as claimed in claim 1, it is characterised in that：The prefabricated bulkhead plate (3) for outside plate (13) and The concrete slab of inner side combines integral structure, and outside plate (13) is connected with inner side concrete slab using holdfast, and inner side is mixed Inner side in concrete board is equipped with bar-mat reinforcement, has L-type steel cornerite in bulkhead plate top, has U-shaped steel cornerite below, left in bulkhead plate Side, the right are surrounded by steel plate, and left end is equipped with that male is trapezoidal or half elliptic plug, and it is recessed that right end is equipped with trapezoidal or half elliptic Groove.

5. underground granary as claimed in claim 3, it is characterised in that：Prefabricated bulkhead plate (3) is circumferential horizontal concordant, its outside with Multiple function (1) or reinforcing prop (2) are welded to connect, and are connected on the inside of contiguous prefabricated bulkhead plate (3) with junction steel plate (6), connect steel Plate (6) is used with prefabricated bulkhead plate (3) and is welded to connect；In multiple function (1) or reinforcing prop (2) and contiguous prefabricated bulkhead plate (3) And the anti-water coagulation of identical with prefabricated bulkhead plate (3) or high strongest grade is poured in the cavity that surrounds of junction steel plate (6) Native (12).

6. underground granary as claimed in claim 4, it is characterised in that：The prefabricated bulkhead plate (3) is circumferential horizontal concordant, every piece The male of prefabricated bulkhead plate (3) is trapezoidal or half elliptic plug is inserted into that contiguous prefabricated bulkhead plate (3) female is trapezoidal or half elliptic In slot；Every piece of prefabricated bulkhead plate (3) is welded to connect with multiple function (1) or reinforcing prop (2), in contiguous prefabricated bulkhead plate (3) The perps of side is directly connected using butt welding and/or is welded to connect with junction steel plate.

7. underground granary as claimed in claim 1, it is characterised in that：The upper and lower two layers vertical dislocation of prefabricated bulkhead plate (3) Overlap joint, the overlapping part of upper and lower two layers of bulkhead plate are welded with elongated fillet welding (9).

8. underground granary as claimed in claim 1, it is characterised in that：Upper and lower two layers of dislocation of the prefabricated bulkhead plate (3) is taken Meet place and be equipped with oblique stiffening plate (8), oblique stiffening plate (8) is welded with prefabricated bulkhead plate (3) up and down.

9. underground granary as claimed in claim 1, it is characterised in that：Upper and lower two layers of dislocation of the prefabricated bulkhead plate (3) is taken The place of connecing is circumferentially spaced to be provided with ribbed stiffener (7)；The ribbed stiffener (7) is cut away right angle by right angled triangle steel plate and is formed, and should add Strength rib (7) and the adjacent equal vertical welding of prefabricated bulkhead plate (3) up and down；Ribbed stiffener (7) is polylith, vertically prefabricated bulkhead plate (3) Overlapping part circumferential direction is uniformly distributed.

A kind of 10. construction method for building the underground granary described in the claims 1-9 any one, it is characterised in that：Institute Construction method is stated to comprise the following steps：

(1) multiple function (1) is driven underground by certain depth in precalculated position according to design requirement；

(2) surrounded in multiple function (1) and first layer soil is excavated in region；

(3) after first layer soil is excavated, the installation prefabricated bulkhead plate (3) of first layer on the inside of multiple function (1)；

(4) after installing the prefabricated bulkhead plate (3) of first layer, second layer soil is down excavated in continuation；

(5) the installation first layer reinforcing prop (2) on the inside of multiple function (1)；

(6) the installation prefabricated bulkhead plate (3) of the second layer on the inside of first layer reinforcing prop (2)；

(7) according to the construction method of above-mentioned (4)-(6) step, prefabricated bulkhead plate (3) is installed downwards successively, until orlop position；

(8) orlop plate (5) construction is carried out；

(9) construction of Hold Ceiling (3) is finally carried out, that is, completes the overall structure of underground granary.