CN214940047U - Pile-anchor composite structure capable of bearing tension and compression bidirectional load - Google Patents
Pile-anchor composite structure capable of bearing tension and compression bidirectional load Download PDFInfo
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- CN214940047U CN214940047U CN202023314366.6U CN202023314366U CN214940047U CN 214940047 U CN214940047 U CN 214940047U CN 202023314366 U CN202023314366 U CN 202023314366U CN 214940047 U CN214940047 U CN 214940047U
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Abstract
The utility model discloses a pile-anchor composite structure capable of bearing tension and compression bidirectional loads, which belongs to the field of construction of building engineering and comprises a precast pile, a pile tip, an end plate, a steel strand, a connecting plate and a reinforcing rib; through welded connection between stake point and the precast pile, the welding has the end plate between the adjacent precast pile, and the steel strand wires of different positions anchor on the end plate that corresponds the degree of depth, and the other end of all steel strand wires of drawing forth from the precast pile inside all is fixed on the connecting plate, the one end of strengthening rib is fixed on the connecting plate. The utility model discloses an adopt many steel strands to bear the weight of steel strands in groups, realized the dispersion of stretching resistance, divide into the multiunit with the bearing capacity of precast pile, the self bearing capacity of full play tubular pile.
Description
Technical Field
The utility model relates to a building engineering construction field, in particular to can bear and draw stake anchor composite construction who presses two-way load.
Background
In order to develop and utilize underground space and improve land utilization rate, many cities begin to build comprehensive underground commercial streets, civil air defence, underground parking garages, underground public pipe galleries and subways, and the underground structures put higher requirements on the bearing capacity, durability and the like of the structural foundation.
When the buried depth of the building foundation exceeds the underground water level, the part below the water level generates the upper buoyancy, the upper buoyancy is generally balanced by the dead weight of the building structure, but when the buried depth and the area of the basement are increased, along with the increase of the volume of the drained underground water, the dead weight of the building structure is not enough to balance the borne buoyancy, a series of engineering accidents such as the uplift of a basement bottom plate, the upward floating of the structure, the inclination and even the collapse of the structure can be caused, and the disturbance factors such as the surrounding environment influence, the change of the upper building structure, the change of the underground water level and the like are added, so the difficulty and the complexity of the anti-floating of the building foundation are increased.
In order to solve the above-mentioned foundation engineering anti-floating problem, the structural engineer must properly consider the tensile force and pressure applied to the building during the pile foundation design, and because of the differences in the methods of the reinforced concrete tension and the compression members in the crack width control standard and the node treatment, the current common engineering method is to arrange two independent stress systems of the compression pile and the tension (floating) resisting pile at the bottom of the foundation, namely: the pressure of the base is borne by the compression-resistant pile group, and the pulling (floating) force of the base is borne by the tensile (floating) pile group.
The Chinese patent CN105350531B introduces a tubular pile and anchor rod composite foundation capable of bearing tension and compression bidirectional loads and a construction process, and the main technical scheme is as follows: the pile comprises a tubular pile and an anchor rod, wherein an anchoring hole is reserved in a foundation slab of a building structure, and an anchorage device at a tensioning end is pre-buried in the anchoring hole; the anchor rod consists of an anchor cable and a prefabricated anchor head, and the prefabricated anchor head is embedded in the soil body below the foundation slab; the upper end of the anchor cable penetrates out of the tubular pile and extends into the anchoring hole, and after the anchor cable is stretched, the anchor cable is locked by a stretching end anchorage device; the tubular pile is supported between the foundation slab and the prefabricated anchor head, and the lower end of the tubular pile is fixedly connected with the upper end of the prefabricated anchor head. The above method solves the problem of the difficult basic compression resistance and tensile resistance in engineering, but the method also has certain defects, which are mainly shown in the following steps: the tensile pile has unsatisfactory stress performance, and because the tensile stress is not uniformly distributed along the length direction of the pile, and the tensile strength of the concrete is only 1/10 to 1/20 of the compressive strength, the concrete pile body can crack under the early low tensile force, the concrete cracks to cause the corrosion of the reinforcing steel bars of the pile body by underground water, the durability of the tensile pile can be seriously influenced, and the reliability of a building structure is reduced. Under the tensile condition, the lowermost end of the pipe pile is pressed and concentrated, and the condition that concrete at the pile end is crushed possibly occurs. Therefore, a new structural form is needed to solve the above problems, and based on this, the utility model provides a pile anchor composite structure capable of bearing tension and compression bidirectional loads.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem who exists among the prior art, the utility model provides a can bear and draw pile anchor composite construction who presses two-way load has overcome the not enough of prior art. Through adopting many steel strands to bear the weight of the steel strand group, realized the dispersion of stretching resistance, divide into the multiunit with the bearing capacity of precast pile, the self bearing capacity of full play tubular pile.
The utility model provides a can bear stake anchor composite construction who draws pressure two-way load which characterized in that: comprises a precast pile, a pile tip, an end plate, a steel strand, a connecting plate and a reinforcing rib; through welded connection between stake point and the precast pile, the welding has the end plate between the adjacent precast pile, and the steel strand wires of different positions anchor on the end plate that corresponds the degree of depth, and the other end of all steel strand wires of drawing forth from the precast pile inside all is fixed on the connecting plate, the one end of strengthening rib is fixed on the connecting plate.
Preferably, the precast pile can but not only be limited to tubular pile, square pile, special-shaped pile, steel-pipe pile, and the inside cavity of precast pile is circular, and the diameter scope of precast pile is 300mm ~1200 mm.
Preferably, the end plate is reserved with mounting holes which are uniformly distributed along the center point of the end plate in an annular manner, the thickness of the end plate is 5 mm-10 mm, and the diameter of the end plate is the same as that of an inner cavity of the precast pile.
Preferably, the diameter of the steel strand ranges from 10mm to 20mm, the reinforcing rib is finish-rolled deformed steel bar, and the diameter of the reinforcing rib ranges from 40mm to 80 mm.
Preferably, the diameter of the connecting plate is smaller than the diameter of the inner cavity of the precast pile, mounting holes are reserved in the connecting plate, the mounting holes corresponding to the reinforcing ribs are located in the center of the connecting plate, the mounting holes corresponding to the steel strands are distributed annularly along the center of the connecting plate, and the thickness of the connecting plate is 20 mm-50 mm.
Preferably, the elastic modulus of the reinforcing ribs is greater than that of the steel strands; the reinforcing ribs are distributed in a dispersed mode, one part of reinforcing ribs are connected with the connecting plate in a mechanical connection mode, and the other part of reinforcing ribs are connected with the prestressed reinforcing steel bars in the precast pile in a mechanical connection mode.
The utility model discloses the beneficial technological effect who brings:
through adopting many steel strands to bear the weight of the steel strand group, realized the dispersion of stretching resistance, divide into the multiunit with the bearing capacity of precast pile, the self bearing capacity of full play tubular pile.
Drawings
Fig. 1 is the utility model relates to a can bear the structural schematic diagram of the stake anchor composite construction of pulling and pressing two-way load.
Fig. 2 is the utility model relates to a can bear the structural schematic diagram of end plate in stake anchor composite construction who draws and presses two-way load.
Fig. 3 is the utility model relates to a can bear the structural schematic diagram of connecting plate among pile anchor composite construction of pulling and pressing two-way load.
Wherein, the prefabricated pile comprises 1-a prefabricated pile, 2-a pile tip, 3-an end plate, 4-a steel strand, 5-a connecting plate and 6-a reinforcing rib.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
example 1:
as shown in figures 1-3, a can bear stake anchor composite construction of pulling and pressing two-way load, its characterized in that: the prefabricated pile comprises a prefabricated pile 1, a pile tip 2, an end plate 3, a steel strand 4, a connecting plate 5 and reinforcing ribs 6; through welded connection between stake point 2 and the precast pile 1, the welding has end plate 3 between the adjacent precast pile 1, and the steel strand wires 4 of different positions anchor on the end plate 3 that corresponds the degree of depth, and the other end of all steel strand wires 4 of drawing forth from precast pile 1 is all fixed on connecting plate 5, the one end of strengthening rib 6 is fixed on connecting plate 5.
Preferably, precast pile 1 includes tubular pile, square pile, special-shaped pile, steel-pipe pile, and the inside cavity of precast pile is circular, and the diameter scope of precast pile 1 is 300mm ~1200 mm. This experiment used a smooth round tubular pile with a diameter of 400 mm.
Preferably, the end plate 3 is reserved with mounting holes, the mounting holes are uniformly distributed along the central point of the end plate 3 in an annular manner, the thickness of the end plate 3 is 10mm, and the diameter of the end plate 3 is the same as that of the inner cavity of the precast pile 1.
Preferably, the diameter of the steel strand 4 is 15mm, the reinforcing rib 6 is finish-rolled deformed steel bar, and the diameter of the reinforcing rib 6 is 60 mm.
Preferably, the diameter of the connecting plate 5 is smaller than the diameter of the inner cavity of the precast pile 1, a mounting hole is reserved on the connecting plate 5, the mounting hole corresponding to the reinforcing rib 6 is located in the center of the connecting plate 5, the mounting holes corresponding to the steel strands 4 are annularly distributed along the center of the connecting plate 5, and the thickness of the connecting plate 5 is 40 mm.
Preferably, the modulus of elasticity of the reinforcing ribs 6 is greater than the modulus of elasticity of the steel strands 4; the reinforcing ribs 6 are distributed in a dispersed mode, 50% of the reinforcing ribs 6 are connected with the connecting plate 5 in a mechanical connection mode, and 50% of the reinforcing ribs 6 are connected with prestressed steel bars in the precast pile 1 in a mechanical connection mode.
Example 2:
as shown in figures 1-3, a can bear stake anchor composite construction of pulling and pressing two-way load, its characterized in that: the prefabricated pile comprises a prefabricated pile 1, a pile tip 2, an end plate 3, a steel strand 4, a connecting plate 5 and reinforcing ribs 6; through welded connection between stake point 2 and the precast pile 1, the welding has end plate 3 between the adjacent precast pile 1, and the steel strand wires 4 of different positions anchor on the end plate 3 that corresponds the degree of depth, and the other end of all steel strand wires 4 of drawing forth from precast pile 1 is all fixed on connecting plate 5, the one end of strengthening rib 6 is fixed on connecting plate 5.
Preferably, precast pile 1 includes tubular pile, square pile, special-shaped pile, steel-pipe pile, and the inside cavity of precast pile is circular, and the diameter scope of precast pile 1 is 300mm ~1200 mm. This experiment used a smooth round tubular pile with a diameter of 500 mm.
Preferably, the end plate 3 is reserved with mounting holes, the mounting holes are uniformly distributed along the central point of the end plate 3 in an annular manner, the thickness of the end plate 3 is 10mm, and the diameter of the end plate 3 is the same as that of the inner cavity of the precast pile 1.
Preferably, the diameter of the steel strand 4 is 15mm, the reinforcing rib 6 is finish-rolled deformed steel bar, and the diameter of the reinforcing rib 6 is 60 mm.
Preferably, the diameter of the connecting plate 5 is smaller than the diameter of the inner cavity of the precast pile 1, a mounting hole is reserved on the connecting plate 5, the mounting hole corresponding to the reinforcing rib 6 is located in the center of the connecting plate 5, the mounting holes corresponding to the steel strands 4 are annularly distributed along the center of the connecting plate 5, and the thickness of the connecting plate 5 is 40 mm.
Preferably, the modulus of elasticity of the reinforcing ribs 6 is greater than the modulus of elasticity of the steel strands 4; the reinforcing ribs 6 are distributed in a dispersed mode, 50% of the reinforcing ribs 6 are connected with the connecting plate 5 in a mechanical connection mode, and 50% of the reinforcing ribs 6 are connected with prestressed steel bars in the precast pile 1 in a mechanical connection mode.
During construction, firstly, a pile tip 2 and an end plate 3 are welded at the lower end of a first implanted precast pile 1, a steel strand 4 is connected to the end plate 3, the first precast pile 1 is implanted to a preset depth and then a second precast pile 1 is welded, the end plate 3 is welded at the same time and connected with the steel strand 4, the processes are repeated until the precast pile 1 is implanted completely, all reinforcing ribs 6 are fixed on a connecting plate 5, and the reinforcing ribs 6 are fixed on the connecting plate 5.
The utility model relates to a can bear pile anchor composite construction who draws and press two-way load is through adopting many steel strands to bear the weight of steel strand wires in groups, realized the dispersion of stretching resistance, divide into the multiunit with the bearing capacity of precast pile, full play tubular pile's self bearing capacity.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a can bear stake anchor composite construction who draws pressure two-way load which characterized in that: comprises a precast pile, a pile tip, an end plate, a steel strand, a connecting plate and a reinforcing rib; through welded connection between stake point and the precast pile, the welding has the end plate between the adjacent precast pile, and the steel strand wires of different positions anchor on the end plate that corresponds the degree of depth, and the other end of all steel strand wires of drawing forth from the precast pile inside all is fixed on the connecting plate, the one end of strengthening rib is fixed on the connecting plate.
2. The pile-anchor composite structure capable of bearing tension-compression bidirectional loads according to claim 1, wherein the precast pile comprises a tubular pile, a square pile, a special-shaped pile and a steel pipe pile, the inner cavity of the precast pile is circular, and the diameter range of the precast pile is 300 mm-1200 mm.
3. The pile-anchor composite structure capable of bearing tension-compression bidirectional loads according to claim 1, wherein mounting holes are reserved on the end plate and are uniformly distributed along the central point of the end plate in an annular manner, the thickness of the end plate is 5 mm-10 mm, and the diameter of the end plate is the same as that of an inner cavity of the precast pile.
4. The pile-anchor composite structure capable of bearing tension and compression bidirectional loads according to claim 1, wherein the diameter of the steel strand is 10 mm-20 mm, the reinforcing rib is finish-rolled deformed steel bar, and the diameter of the reinforcing rib is 40 mm-80 mm.
5. The pile-anchor composite structure capable of bearing tension and compression bidirectional loads according to claim 1, wherein the diameter of the connecting plate is smaller than the diameter of the inner cavity of the precast pile, mounting holes are reserved in the connecting plate, the mounting holes corresponding to the reinforcing ribs are located at the center of the connecting plate, the mounting holes corresponding to the steel strands are annularly distributed along the center of the connecting plate, and the thickness of the connecting plate is 20 mm-50 mm.
6. The pile-anchor composite structure capable of bearing tension-compression bidirectional loads according to claim 1, wherein the elastic modulus of the reinforcing ribs is greater than that of the steel strands; the reinforcing ribs are distributed in a dispersed mode, one part of reinforcing ribs are connected with the connecting plate in a mechanical connection mode, and the other part of reinforcing ribs are connected with the prestressed reinforcing steel bars in the precast pile in a mechanical connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023314366.6U CN214940047U (en) | 2020-12-31 | 2020-12-31 | Pile-anchor composite structure capable of bearing tension and compression bidirectional load |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023314366.6U CN214940047U (en) | 2020-12-31 | 2020-12-31 | Pile-anchor composite structure capable of bearing tension and compression bidirectional load |
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| CN214940047U true CN214940047U (en) | 2021-11-30 |
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| CN202023314366.6U Active CN214940047U (en) | 2020-12-31 | 2020-12-31 | Pile-anchor composite structure capable of bearing tension and compression bidirectional load |
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| CN (1) | CN214940047U (en) |
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