CN219060035U - Anti-floating anchor rod prestress transmission device - Google Patents
Anti-floating anchor rod prestress transmission device Download PDFInfo
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- CN219060035U CN219060035U CN202320276704.6U CN202320276704U CN219060035U CN 219060035 U CN219060035 U CN 219060035U CN 202320276704 U CN202320276704 U CN 202320276704U CN 219060035 U CN219060035 U CN 219060035U
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Abstract
The utility model discloses an anti-floating anchor rod prestress transmission device, which relates to the technical field of basement construction and comprises the following components: the bottom plate, first through-hole has been seted up to its center, two I shape supporting shoes, it is located the both sides of first through-hole relatively at the biggest two sides of plane projected area, two right trapezoid pieces, be located the both inner sides of two relative I shape supporting shoes respectively, and be located the both sides of first through-hole, two right trapezoid piece hypotenuse spaces are crossing, two diaphragm upper surfaces of two I shape supporting shoes bottoms are located respectively to every right trapezoid piece long base, the diaphragm subaerial at I shape supporting shoe top is located to the fixed locating in short base, the roof, the lid is located two I shape supporting shoes, the center is equipped with the second through-hole, this utility model can take place the side easily under the great circumstances of prestressing force and warp.
Description
Technical Field
The utility model relates to the technical field of basement construction, in particular to an anti-floating anchor pre-stress transfer device.
Background
In the house design, the underground garage is mostly designed into double layers, and aims to ensure the planning requirement of the number of parking spaces. This results in the floor of the built underground garage being below the ground water level, thereby causing the anti-floating problem of the underground garage to be placed in front of the engineering designer. The anti-floating problem is solved by three methods, namely, the underground garage is designed to be an overground column pier, and the later-stage underground garage is used as backfill. Secondly, the underground garage is designed into an underground pier, and the thickness of the structural raft is increased. Thirdly, the underground garage is designed into an underground pier, the thickness of a construction raft meets the standard requirement, and then the prestress anti-floating anchor rod is added.
The prestress transfer device of the prestress anti-floating anchor rod is subjected to prestress loading after the waterproof construction of the cushion layer is completed. At present, the prestress transmission device in the market adopts a structure that two I-steel are welded on a bottom plate, and lateral tilting easily occurs under the condition of larger prestress.
Disclosure of Invention
The embodiment of the utility model provides a prestress transmission device for an anti-floating anchor rod, which can solve the problem that the existing prestress transmission device in the prior art is easy to incline sideways under the condition of larger prestress.
The embodiment of the utility model provides an anti-floating anchor rod prestress transmission device, which comprises:
the center of the bottom plate is provided with a first through hole;
two I-shaped supporting blocks, wherein the two side surfaces with the largest plane projection area are oppositely arranged at the two sides of the first through hole;
the two right trapezoid blocks are respectively positioned at the two inner sides of the two opposite I-shaped supporting blocks and at the two sides of the first through hole, the oblique sides of the two right trapezoid blocks are intersected in space, the long bottom edge of each right trapezoid block is respectively fixedly arranged on the upper surfaces of the two transverse plates at the bottoms of the two I-shaped supporting blocks, and the short bottom edge is fixedly arranged on the ground below the transverse plates at the tops of the I-shaped supporting blocks;
the top plate is covered on the two I-shaped supporting blocks, and a second through hole is formed in the center of the top plate.
Further, the method further comprises the following steps:
the two isosceles trapezoid blocks are respectively positioned at the outer sides of the vertical plates of the two right trapezoid blocks, the bottom of each isosceles trapezoid block is fixedly arranged on the top surface of the transverse plate at the bottom of the I-shaped supporting block, and the top of each isosceles trapezoid block is fixedly arranged on the bottom surface of the transverse plate at the top of the I-shaped supporting block.
Further, the bottom plate comprises a rectangular bottom plate and a round bottom plate.
Further, the shape of the top plate is the same as the shape of the bottom plate.
Further, the bottom plate and the top plate are both steel plates.
Further, the two I-shaped supporting blocks are both I-shaped steel blocks.
Further, the projection area of the two I-shaped supporting blocks on the bottom plate is smaller than the area of the bottom plate except for the first through hole.
Further, the area of the top plate is larger than the area of the bottom plate.
Compared with the prior art, the anti-floating anchor rod prestress transmission device provided by the embodiment of the utility model has the following beneficial effects:
the utility model adopts common materials in construction sites, achieves the expected mechanical effect through certain combination, supports the lateral pressure of the two I-shaped supporting blocks by utilizing the right trapezoid blocks, prevents the I-shaped supporting blocks from falling down laterally, meets the requirements of practical projects, saves materials, saves construction period, saves labor, and has good economic and social benefits.
Drawings
Fig. 1 is a front view of an anti-floating anchor prestress transmission device according to an embodiment of the present utility model.
Fig. 2 is a top view of a bottom plate of an anti-floating anchor prestress transmission device according to an embodiment of the present utility model;
fig. 3 is a top view of a top plate of an anti-floating anchor prestress transmission device according to an embodiment of the present utility model.
Detailed Description
The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.
It is to be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Referring to fig. 1-3, an anti-floating anchor prestress transmission device, comprising:
a first through hole 2 is formed in the center of the bottom plate 1;
two I-shaped supporting blocks 3, which are oppositely arranged at two sides of the first through hole 2 at the two sides with the largest plane projection area;
the two right trapezoid blocks 4 are respectively positioned at the two inner sides of the two opposite I-shaped supporting blocks 3 and at the two sides of the first through hole 2, the bevel edges of the two right trapezoid blocks 4 are intersected in space, the long bottom edge of each right trapezoid block 4 is respectively fixedly arranged on the upper surfaces of the two transverse plates at the bottoms of the two I-shaped supporting blocks 3, and the short bottom edge is fixedly arranged on the ground below the transverse plates at the tops of the I-shaped supporting blocks 3;
the top plate 5 is covered on the two I-shaped supporting blocks 3, and a second through hole 6 is arranged in the center.
In the embodiment, in the construction of the prestress anti-floating anchor rod, the number of required steel strands is confirmed through experiments according to the design prestress, the area of a bottom plate of the prestress transmission device is determined according to the bearing capacity of a foundation, the prestress is loaded, and finally the steel strands are locked by an anchor. In raft construction, all prestress transmission devices, anchors and steel strands are poured into the raft. After the anchor rod is drilled and the anchor rod is put into the anchor rod, an important problem is faced, namely the manufacture of the prestress transmission device. In Guanzhong and Shaanxi, the soil layer of the prestress anti-floating anchor should be basically pebble layer or powdery clay layer. According to the acquired data pebble layer fak (kpa) =260, silty clay layer fak (kpa) =180. In the same stratum, certain intersection exists, so that foundation bearing fak (kpa) =180 is selected for calculation in order to ensure that stratum sinking cannot be caused after the prestress transmission device is loaded. In the conventional design, a 100-thickness C15 cushion layer is poured on a foundation of fak (kpa) =180, and the prestress calculates the bottom stressed area of the prestress transmission device according to 65 KN. The following data were obtained from the calculation and from the continual improvement of the field test.
The bottom plate 1 of the prestress transmission device adopts a steel plate with the thickness of 250mm multiplied by 10 mm; the two I-shaped supporting blocks 3 are made of 16-shaped I-steel, and the length of the I-shaped supporting blocks is 250mm; the top plate 5 is made of a steel plate of 200mm×200mm×15 mm. The right trapezoid block 4 is arranged according to the actual distance, and the 5 components are welded by welding rods.
The bottom of the two I-shaped supporting blocks 3 is fixedly arranged on the two sides of the first through hole 2 of the bottom plate 1 left and right through welding, two staggered right trapezoid blocks 4 are respectively arranged on the front side and the rear side of the two I-shaped supporting blocks 3, the long sides of the bottoms of the right trapezoid blocks 4 are welded with two transverse blocks at the bottom of the inner side of the I-shaped supporting blocks 3, the short sides of the tops of the right trapezoid blocks 4 are welded with the transverse blocks at the tops of the I-shaped supporting blocks 3, in fig. 1, the short sides of the front right trapezoid blocks 4 are welded with the transverse blocks at the tops of the right I-shaped supporting blocks 3, and the short sides of the rear right trapezoid blocks 4 are welded with the transverse blocks at the tops of the left I-shaped supporting blocks 3 so as to increase the supporting force on the left side and the right side. The front right trapezoid block 4 and the rear right trapezoid block 4 are all positioned on the outer side of the first round hole 2.
In one possible embodiment, the method further comprises:
two isosceles trapezoid blocks 7, it is located the outside of the riser of two right trapezoid blocks 4 respectively, and every isosceles trapezoid block 7 bottom is fixed to be located on the top surface of the diaphragm of "I" style of calligraphy supporting shoe 3 bottom, and the top is fixed to be located on the bottom surface of the diaphragm at I "style of calligraphy supporting shoe 3 top.
In this embodiment, the sides of the two isosceles trapezoid blocks 7 are parallel to the sides of the two i-shaped supporting blocks 3 respectively, the long sides of the bottoms are shorter than the length of the bottom transverse plate of the i-shaped supporting blocks 3 and are welded with the same, and the short sides of the tops are welded with the top transverse block of the i-shaped supporting blocks 3.
In one possible embodiment, the base plate 1 comprises a rectangular base plate, a circular base plate.
In this embodiment, a plasma cutting machine is adopted to cut a steel plate with a thickness of 10mm into a square steel plate with a thickness of 250mm×250mm, and the square steel plate is used as a bottom plate 1, a hole with a diameter of d=50mm is formed in the middle of the cut steel plate with a thickness of 250mm×250mm, so that a steel strand is ensured to pass through the hole in the middle, and the cut steel plate with a thickness of 250mm×250mm is polished to avoid scratching and waterproofing.
In one possible embodiment, the shape of the top plate 5 is the same as the shape of the bottom plate 1.
In this embodiment, the top plate 5 is sized 200mm×200mm in consideration of construction deviation and site installation deviation, and a hole with a diameter d=50 mm is opened in the middle of the cut 200mm×200mm steel plate to ensure that the steel strand passes through the hole in the middle.
In one possible embodiment, the right angle trapezoidal blocks, the bottom plate 1 and the top plate 5 are all steel plates.
In this example, a hot rolled Q235B steel plate was used as the steel plate, 10mm thick.
In one possible embodiment, both of the "i" shaped support blocks 3 are "i" shaped steel blocks.
In this embodiment, the bottom plate 1 of the prestress transmission device is l=250 mm, the middle part is d=50 mm, and the dimensions of the two-sided steel plates l1=100 mm. Steel plate L 1 =100 mm, with h steel 16# being the most suitable. The width of flanges at two sides of the 16# I-steel is 88mm, and the bottom plate L 1 =100 mm, the size is just suitable, cuts the I-steel into 240mm length, and the burr after cutting is polished clean.
In one possible embodiment, the projected area of the two "i" shaped support blocks 3 on the bottom plate 1 is smaller than the area of the bottom plate 1 excluding the first through holes 2.
In the present embodiment, two "i" -shaped supporting blocks 3 are located within the range of the bottom plate 1 excluding the first through holes 2.
In one possible embodiment, the area of the top plate 5 is larger than the area of the bottom plate 1.
In this embodiment, the top plate 5 is required to uniformly transfer the concentrated load to the I-steel, and the size of the top plate 5 exceeds the rib of the I-steel, i.e., L > 88/2mm+50mm+88/2mm, i.e., L > 138mm.
The construction method comprises the following steps:
the first step: firstly, performing waterproof construction on a concrete cushion layer before installing a prestress transmission device, performing cushion layer waterproof treatment by adopting cement-based permeable crystalline waterproof paint, and then paving a high-polymer waterproof coiled material;
secondly, sleeving the base, wherein the protection of the waterproof coiled material is paid attention to when sleeving the base, so that the waterproof coiled material is prevented from being damaged;
and a third step of: installing a cover plate;
fourth step: installing an anchor;
fifth step: prestress tensioning of the anti-floating anchor rod, wherein 65KN tension meeting design requirements is ensured in the tensioning process;
sixth step: in order to ensure the waterproof construction quality, the round hole part of the base of the transfer device is subjected to waterproof treatment again by using non-cured rubber asphalt after the prestress application is finished.
The foregoing disclosure is merely illustrative of specific embodiments of the utility model, but the embodiments are not limited thereto and variations within the scope of the utility model will be apparent to those skilled in the art.
Claims (8)
1. An anti-floating anchor pre-stress transfer device, comprising:
a first through hole (2) is formed in the center of the bottom plate (1);
two I-shaped supporting blocks (3) which are oppositely arranged at two sides of the first through hole (2) with the largest plane projection area;
the two right trapezoid blocks (4) are respectively positioned at the two inner sides of the two opposite I-shaped supporting blocks (3) and are positioned at the two sides of the first through hole (2), the oblique sides of the two right trapezoid blocks (4) are intersected in space, the long bottom edge of each right trapezoid block (4) is respectively fixedly arranged on the upper surfaces of the two transverse plates at the bottoms of the two I-shaped supporting blocks (3), and the short bottom edge is fixedly arranged on the lower bottom surface of the transverse plate at the top of the I-shaped supporting block (3);
the top plate (5) is covered on the two I-shaped supporting blocks (3), and a second through hole (6) is formed in the center.
2. An anti-floating anchor pre-stress transfer device as claimed in claim 1, further comprising:
the two isosceles trapezoid blocks (7) are respectively positioned on the outer sides of vertical plates of the right trapezoid blocks (4), the bottom of each isosceles trapezoid block (7) is fixedly arranged on the top surface of a transverse plate at the bottom of the I-shaped supporting block (3), and the top of each isosceles trapezoid block is fixedly arranged on the bottom surface of the transverse plate at the top of the I-shaped supporting block (3).
3. An anti-floating anchor pre-stress transfer device according to claim 1, characterized in that the base plate (1) comprises a rectangular base plate, a circular base plate.
4. A device for the prestress transmission of an anti-floating anchor according to claim 3, characterized in that the top plate (5) has the same shape as the bottom plate (1).
5. An anti-floating anchor pre-stress transfer device according to claim 1, characterized in that the bottom plate (1) and the top plate (5) are both steel plates.
6. An anti-floating anchor prestress transmission device as claimed in claim 1, characterized in that both of the i-shaped support blocks (3) are i-shaped steel blocks.
7. An anti-floating anchor pre-stress transfer device according to claim 1, characterized in that the projected area of the two I-shaped supporting blocks (3) on the bottom plate (1) is smaller than the area of the bottom plate (1) after the first through hole (2) is removed.
8. An anti-floating anchor pre-stress transfer device according to claim 1, characterized in that the area of the top plate (5) is larger than the area of the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320276704.6U CN219060035U (en) | 2023-02-22 | 2023-02-22 | Anti-floating anchor rod prestress transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320276704.6U CN219060035U (en) | 2023-02-22 | 2023-02-22 | Anti-floating anchor rod prestress transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219060035U true CN219060035U (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320276704.6U Active CN219060035U (en) | 2023-02-22 | 2023-02-22 | Anti-floating anchor rod prestress transmission device |
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| Country | Link |
|---|---|
| CN (1) | CN219060035U (en) |
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- 2023-02-22 CN CN202320276704.6U patent/CN219060035U/en active Active
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