Negative-angle vertical rotation ground anchor for narrow site

Abstract

The utility model belongs to the technical field of bridge hoisting construction equipment, and particularly relates to a negative angle vertical rotation ground anchor for a narrow site, which comprises pile foundations, a bearing platform, a double-lug component, an embedded part and an anchoring part, the lower ends of the pile foundations are buried underground and can play a foundation supporting role, the upper ends of the pile foundations protrude out of the ground, the bearing platform is fixed at the upper ends of the two pile foundations, and the double-lug component is fixed at the lower ends of the two pile foundations. Two pairs of double-lug components are symmetrically arranged at the upper end of a bearing platform, the upper end of an embedded part is connected with the double-lug components, the lower end of the embedded part is embedded in the bearing platform, one end of an anchoring part is hinged to one pair of double-lug components, and the other end of the anchoring part is fixedly connected with a cable. The anchoring piece and the bearing platform are fixed through the double-lug component, negative angle deflection is allowed to be generated in the vertical direction, the connection strength is high, installation and maintenance are easy, and the horizontal load bearing capacity is high. The rotation direction of the anchoring part is perpendicular to the surface of the vertical plate of the embedded part, the anchor bars of the embedded part have good pulling resistance, and the vertical plate can bear higher horizontal pulling force.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge hoisting construction equipment technical field, concretely relates to a negative angle vertical rotation ground anchor for narrow site. BACKGROUND

[0002] With the development of society, the structure and modeling of bridge are more and more rich, and the half-through arch bridge is more and more widely used with its excellent bearing capacity and spanning capacity.

[0003] The cable hoisting system is widely used in the construction process of the deck arch bridge, the half-through arch bridge and the through arch bridge, which is generally composed of a tower, a main cable, a ground anchor, a trolley, a hoisting cable, a hoisting block set, a traction cable, a hoisting and traction winch and a cable wind rope, and multiple ground anchors are usually arranged to improve the stability of the cable hoisting system, and the anchor bolt is used to anchor and connect the cable wind rope to the ground anchor foundation, and the anchor bolt is generally perpendicular to the surface of the ground anchor foundation, and the anchor bolt has the risk of shearing.

[0004] However, the traditional ground anchor usually adopts an enlarged foundation anchor stock, occupies a large area and cannot be used in a narrow space, and in addition, a large number of large-diameter anchor bars need to be arranged in the pre-embedded part of the ground anchor to bear a large horizontal force, which not only occupies a large ground space, but also causes material waste. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a negative angle vertical rotation ground anchor for narrow site, which has a small area and a strong horizontal load bearing capacity.

[0006] To solve the above technical problems, the utility model provides a negative angle vertical rotation ground anchor for narrow site, which comprises:

[0007] A pile foundation is buried in the ground at the lower end and protrudes from the ground at the upper end;

[0008] A bearing platform is fixed at the upper end of the two pile foundations;

[0009] Double-ear components are symmetrically arranged at the upper end of the bearing platform;

[0010] A pre-embedded part is connected to the double-ear components at the upper end and buried in the bearing platform at the lower end;

[0011] An anchor part is hingedly connected to one pair of double-ear components at one end and fixedly connected to a cable at the other end.

[0012] Preferably, in the above scheme, the pre-embedded part comprises an anchor bar, a vertical plate and a horizontal plate, the upper end of the anchor bar and the vertical plate is respectively connected to the horizontal plate, and the lower end extends into the bearing platform, and the upper surface of the horizontal plate is connected to the double-ear components.

[0013] Preferably, in the above-mentioned solution, a plurality of said vertical plates are arranged at intervals below said horizontal plate, and a plurality of said anchor bars are arranged on both sides of said vertical plate.

[0014] Preferably, in the above-mentioned solution, the surface of said vertical plate is perpendicular to the surface of said horizontal plate, and the rotation direction of said anchor is perpendicular to the surface of said vertical plate.

[0015] Preferably, in the above-mentioned solution, the surface of said horizontal plate is provided with uniformly distributed first through holes, the lower end of said anchor bar passes through said first through hole into said bearing platform, and the upper end is fixedly connected with said horizontal plate.

[0016] Preferably, in the above-mentioned solution, said double-ear component comprises a circular-arc ear plate and a second through hole, two said circular-arc ear plates are arranged in parallel on the upper surface of said horizontal plate, the upper end of said circular-arc ear plate is provided with said second through hole, and the circular-arc edge of said circular-arc ear plate is concentrically arranged with said second through hole.

[0017] Preferably, in the above-mentioned solution, said double-ear component further comprises a ring-shaped auxiliary plate, said ring-shaped auxiliary plate is arranged on the outer side surface of said circular-arc ear plate and is concentrically arranged with said second through hole.

[0018] Preferably, in the above-mentioned solution, said double-ear component further comprises a rib plate, the side edge of a plurality of said rib plates is connected with the outer side surface of said circular-arc ear plate, and the bottom edge is connected with the upper surface of said horizontal plate.

[0019] Preferably, in the above-mentioned solution, one end of said anchor is rotatably connected with said second through hole and is slidably connected with the inner side surface of said circular-arc ear plate.

[0020] Preferably, in the above-mentioned solution, said pile foundation and said bearing platform are both arranged as a reinforced concrete structure.

[0021] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0022] 1. A negative angle vertical rotation anchor for narrow space in the utility model for narrow space, including pile foundation, bearing platform, double ear component, embedded part and anchor, pile foundation can play the role of foundation support, bearing platform is fixed in the upper end of two pile foundations, can reduce the floor area, be applicable to in the space narrow place constructs, through double ear component with bearing platform is fixed to anchor, and allows negative angle deflection in vertical direction, this double ear connection mode's connection strength is high, easy to install and maintain, horizontal load bearing capacity is strong.

[0023] 2. The embedded part in the utility model comprises anchor bars, vertical plates and horizontal plates, a plurality of vertical plates are arranged at intervals below the horizontal plate, a plurality of anchor bars are arranged on the two sides of the vertical plate respectively, the rotating direction of the anchor joint is perpendicular to the surface of the vertical plate, the anchor bar has good pullout resistance, the vertical plate can bear stronger horizontal tension, the stability of the embedded part and the bearing platform connection is improved, and the setting quantity of the anchor bar can be saved.

[0024] 3. The double-ear component in the utility model comprises a circular-arc ear plate, a ring-shaped secondary plate and a rib plate, the circular-arc ear plate is concentrically arranged with the ring-shaped secondary plate and is fixedly connected with the horizontal plate through the rib plate, and has good stable supporting performance. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structural schematic view of the negative-angle vertical rotation ground anchor for narrow site of the utility model.

[0026] Figure 2 It is the installation structural schematic view of the double-ear component, the embedded part and the anchor joint of the utility model.

[0027] Figure 3 It is the structural schematic view of the embedded part of the utility model.

[0028] Figure 4 It is the structural schematic view of the double-ear component of the utility model.

[0029] Wherein, 1-pile foundation, 2-bearing platform, 3-double-ear component, 31-circular-arc ear plate, 32-second through hole, 33-ring-shaped secondary plate, 34-rib plate, 4-embedded part, 41-anchor bar, 42-vertical plate, 43-horizontal plate, 431-first through hole, 5-anchor joint. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0032] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the term "first", "second", "third", it is only for the purpose of description and for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0033] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements.The above-mentioned terms in the utility model can be understood according to the specific meaning of the above-mentioned terms in the utility model.The embodiments of the utility model are described below according to the overall structure of the utility model.

[0034] As shown in Figures 1-3 The utility model discloses a negative angle vertical rotation ground anchor for narrow site, including pile foundation 1, bearing platform 2, double -eared component 3, pre -buried spare 4 and anchor joint 5, the lower end of pile foundation 1 is buried in the ground, can play the foundation support effect, the upper end protrudes from the ground, bearing platform 2 is fixed at the upper end of two pile foundations 1, can reduce the floor area, is applicable to in the narrow space site construction, the upper end of bearing platform 2 is provided with two pairs of double -eared component 3 symmetrically, the upper end of pre -buried spare 4 is connected with double -eared component 3, the lower end is buried in bearing platform 2, one end of anchor joint 5 is hinged with a pair of double -eared component 3, and the other end is fixedly connected with cable.It can be understood that anchor joint 5 is fixed with bearing platform 2 through double -eared component 3, and negative angle deflection in the vertical direction is allowed, and the negative angle vertical rotation ground anchor can provide necessary uplift resistance and overturning moment in arch bridge construction, ensure construction safety and structural stability, and the connection strength of the double -eared connection mode is high, easy to install and maintain, and the horizontal load bearing capacity is strong.

[0035] Continue to refer to Figure 3 Pre -buried spare 4 includes anchor bar 41, vertical plate 42 and horizontal plate 43, the upper end of anchor bar 41 and vertical plate 42 is connected with horizontal plate 43 respectively, and the lower end extends into bearing platform 2, and the upper surface of horizontal plate 43 is connected with double -eared component 3.It is worth mentioning that pile foundation 1 and bearing platform 2 are all arranged as reinforced concrete structure, the upper end of anchor bar 41 and vertical plate 42 is all welded and fixed on the horizontally arranged horizontal plate 43, when bearing platform 2 is poured, the pre -buried installation work of anchor bar 41 and vertical plate 42 needs to be carried out synchronously, to ensure that pre -buried spare 4 is stably connected with bearing platform 2.

[0036] Further, a plurality of vertical plates 42 are arranged below the horizontal plate 43, and a plurality of anchor bars 41 are arranged on both sides of the vertical plate 42. In this embodiment, three vertical plates 42 are arranged below the horizontal plate 43 at equal intervals, and four anchor bars 41 are arranged on both sides of each vertical plate 42 at equal intervals. The lower ends of the anchor bars 41 extend below the vertical plate 42, thereby having good anti-pulling force.

[0037] Further, the surface of the vertical plate 42 is perpendicular to the surface of the horizontal plate 43, and the rotation direction of the anchoring member 5 is perpendicular to the surface of the vertical plate 42. The vertical plate 42 can withstand stronger horizontal pulling force, thereby improving the stability of the connection between the embedded part 4 and the pile cap 2.

[0038] In addition, the surface of the horizontal plate 43 is provided with uniformly distributed first through holes 431, and the lower ends of the anchor bars 41 pass through the first through holes 431 into the pile cap 2 and are fixedly connected to the upper surface of the horizontal plate 43. Specifically, the anchor bar 41 is in a cylindrical shape, and the first through hole 431 is in a circular hole matched with the anchor bar 41. When the anchor bar 41 is embedded and installed, the lower end of the anchor bar 41 is inserted into the first through hole 431, and the upper end of the anchor bar 41 is welded to the horizontal plate 43 on the upper surface of the horizontal plate 43, thereby having stronger anti-pulling force.

[0039] Continuing to refer to Figure 4 , the double-ear member 3 in this embodiment includes a circular-arc ear plate 31 and a second through hole 32. Two circular-arc ear plates 31 are arranged in parallel on the upper surface of the horizontal plate 43, the upper end of the circular-arc ear plate 31 is provided with the second through hole 32, and the circular-arc edge of the circular-arc ear plate 31 is concentrically arranged with the second through hole 32. Specifically, the lower edge of the circular-arc ear plate 31 extends to both ends of the horizontal plate 43, the second through hole 32 is in a circular hole, and the distance from the center of the second through hole 32 to the upper surface of the horizontal plate 43 is greater than the radius of the circular-arc edge of the circular-arc ear plate 31.

[0040] Further, the double-ear member 3 further includes a ring-shaped auxiliary plate 33, which is arranged on the outer side of the circular-arc ear plate 31 and is concentrically arranged with the second through hole 32. The inner radius of the ring-shaped auxiliary plate 33 is equal to the radius of the second through hole 32, and the outer radius is smaller than the radius of the circular-arc edge of the circular-arc ear plate 31.

[0041] Further, the double-ear member 3 further includes a rib plate 34, and the side edges of a plurality of rib plates 34 are connected to the outer side of the circular-arc ear plate 31, and the bottom edges are connected to the upper surface of the horizontal plate 43. Specifically, one rib plate 34 is arranged near each end of the circular-arc ear plate 31, and the circular-arc ear plate 31 and the rib plate 34 are fixed to the upper surface of the horizontal plate 43 by welding.

[0042] Further, one end of the anchoring member 5 is rotationally connected with the second through hole 32, and is slidingly connected with the inner side surface of the circular-arc ear plate 31. Specifically, one end of the anchoring member 5 is provided with two hinging portions, each of which is slidingly connected with the inner side surface of one pair of circular-arc ear plates 31, so that one end of one anchoring member 5 is hinged with four circular-arc ear plates 31. The ground anchor of the embodiment is composed of two pile foundations 1, one bearing platform 2, four groups of pre-buried members 4, four pairs of double-ear members 3, and two anchoring members 5. The two anchoring members 5 are arranged away from each other and in parallel, and the two pairs of double-ear members 3 hinged with one end of the anchoring member 5 are arranged close to each other and in parallel. The multi-point support mode further improves the anti-overturning capacity of the arch bridge structure.

[0043] The embodiment provides one of the applications of the negative-angle vertical rotation ground anchor, including the bridge of the deck arch bridge, the half-through arch bridge and the through arch bridge, which can be used for the arch rib as the main load-bearing structure, and the installation of the arch rib adopts the rotation construction method. The rotation construction method is to divide the arch ring or the entire upper structure into two half spans (which can be different lengths of half spans), and then the half arch is prefabricated and assembled into a half arch on the two banks of the river by using the terrain or simple supports. Then, the half arch is rotated to the bridge axis position or the design elevation by using a power device to close into an arch. At present, the rotation construction of the steel pipe arch rib bridge mostly adopts the lying assembly vertical lifting rotation construction method, that is, the lying assembly support is first erected at the low position along the extension direction of the arch rib. After the erection is completed, the arch rib is rotated from the bottom to the top to the bridge axis position or the design elevation to close into an arch. However, the embodiment is applied to a new vertical assembly negative-angle rotation construction method, that is, after the arch rib is vertically assembled above the abutment, under the coordination of the lowering cable behind it and the wind cable in front of it, the arch rib is rotated downward to the design elevation. However, before the arch rib is vertically assembled, the tower needs to be erected to fix the lowering cable, so as to realize the slow and orderly lowering of the arch rib. In order to ensure the stability of the tower, a ground anchor needs to be arranged behind the tower, that is, the negative-angle vertical rotation ground anchor in the above technical solution of the embodiment is used. The tower needs to bear a large load in the process of tensioning the lowering cable, so a ground anchor is arranged behind the tower. The anchoring jack is fixed by the ground anchor. One end of the anchoring cable connected with the anchoring jack is connected with the top of the tower, so as to help maintain the balance of the front and back of the tower. The negative-angle vertical rotation ground anchor of the embodiment has high connection strength and anti-overturning capacity, and is especially suitable for application in the vertical assembly negative-angle rotation construction of the arch rib, so as to better ensure the safety of the arch rib construction.

[0044] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the application. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications being applicable. The scope of the application is intended to be defined by the claims and their equivalents.

Claims

1. A negative angle vertical turning ground anchor for use in tight spaces, characterized by, The utility model relates to a pile foundation, the lower end is buried in the ground, and the upper end protrudes from the ground. A pile cap is fixed to the upper ends of two pile foundations. A pair of double-ear members is symmetrically arranged on the upper end of the pile cap. A pre-embedded part is connected to the double-ear members at the upper end and buried in the pile cap at the lower end. An anchor part is hingedly connected to one pair of double-ear members at one end and fixedly connected to a cable at the other end. The pre-embedded part includes anchor bars, vertical plates, and a horizontal plate.

2. A negative angle vertical turning ground anchor for use in tight spaces according to claim 1, wherein, The upper ends of the anchor bars and the vertical plates are respectively connected to the horizontal plate, and the lower ends extend into the pile cap.

3. A negative angle vertical turning ground anchor for use in tight spaces according to claim 2, wherein, The upper surface of the horizontal plate is connected to the double-ear members.

4. A negative angle jacking anchor for use in tight spaces according to claim 3, wherein, Multiple vertical plates are arranged below the horizontal plate.

5. A negative angle vertical turn ground anchor for use in tight spaces according to claim 2, wherein, Multiple anchor bars are arranged on both sides of the vertical plates.

6. A negative angle vertical turn ground anchor for use in tight spaces according to claim 2, wherein, The surface of the vertical plate is perpendicular to the surface of the horizontal plate.

7. A negative angle jacking anchor for use in tight spaces according to claim 6, wherein, The rotation direction of the anchor part is perpendicular to the surface of the vertical plate.

8. A negative angle jacking anchor for use in tight spaces according to claim 7, wherein, The surface of the horizontal plate is provided with uniformly distributed first through holes.

9. A negative angle jacking anchor for use in tight spaces according to claim 7, wherein, The lower ends of the anchor bars pass through the first through holes into the pile cap, and the upper ends are fixedly connected to the horizontal plate.

10. A negative angle vertical turn ground anchor for use in tight spaces according to claim 1, wherein, The double-ear members include circular-arc ear plates and second through holes. Two circular-arc ear plates are arranged in parallel on the upper surface of the horizontal plate. The upper end of the circular-arc ear plate is provided with the second through hole. The circular-arc edge of the circular-arc ear plate is concentrically arranged with the second through hole. The double-ear members also include annular sub-plates. The annular sub-plates are arranged on the outer side of the circular-arc ear plate and concentrically arranged with the second through hole. The double-ear members also include rib plates. The side edges of multiple rib plates are connected to the outer side of the circular-arc ear plate, and the bottom edges are connected to the upper surface of the horizontal plate. One end of the anchor part is rotationally connected to the second through hole and slidingly connected to the inner side of the circular-arc ear plate. The pile foundation and the pile cap are both arranged as reinforced concrete structures.

Images