Anchoring device for bearing rope of tower-free cable crane and cable crane

Abstract

The utility model provides a tower-free cable crane load-bearing rope anchoring device and a cable crane, the anchoring device comprises vertical pile foundations, rope tying beams, inclined pile foundations and pre-stressed anchor cables, the vertical pile foundations are arranged in parallel at certain intervals, bearing platforms are arranged at the top ends of the vertical pile foundations, and the rope tying beams are arranged between the bearing platforms; the bearing rope can transversely move on the rope tying beam; the end face area of the end, connected with the bearing platform, of the inclined pile foundation is smaller than that of the other end of the inclined pile foundation. The pre-stressed anchor cables are arranged at the ends, away from the bearing platform, of the inclined pile foundations. The cable crane comprises the bearing rope anchoring device of the tower-free cable crane and the bearing rope of the tower-free cable crane, and the bearing rope of the tower-free cable crane is fixed on the rope tying beam. The utility model has the beneficial effects that the required construction site is small, the construction cost is saved, the environmental recovery pressure is small, and the environmental damage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering field, specifically, relate to a towerless cable crane load bearing rope anchorage device and cable crane. BACKGROUND

[0002] The cable crane needs to anchor the two ends of the load bearing rope, wherein the load bearing rope of the cable crane with small span and maximum lifting capacity can be directly anchored to the two sides of the mountain by the anchor rod, the anchor rod is arranged in the same direction as the load bearing rope, and the anchor rod directly bears the tension of the load bearing rope; the load bearing rope of the cable crane with large span and maximum lifting capacity can be anchored by the pile type ground anchor, the gravity type ground anchor and the prestressed ground anchor, the pile type ground anchor is anchored by a single or multiple piles and provides bending stiffness to bear the tension of the load bearing rope, the gravity type ground anchor bears the tension of the load bearing rope by the weight of the ground anchor and the friction force between the ground anchor and the land, and the prestressed ground anchor bears the tension of the load bearing rope by pre-tensioning the prestressed anchor cable on the ground anchor, wherein the prestressed ground anchor needs to pre-tension the prestressed anchor cable, and the ground anchor is directly attached to the mountain to directly offset the prestressed anchor cable force, and the above-mentioned methods have the following problems: (1) for the cable crane with large span and maximum lifting capacity, the sizes of the pile type ground anchor, the gravity type ground anchor and the prestressed ground anchor are large, and a large construction site is needed, and it is difficult to select the positions of the pile type ground anchor, the gravity type ground anchor and the prestressed ground anchor in the steep cliff terrain environment; (2) in order to ensure a sufficient construction site, the pile type ground anchor, the gravity type ground anchor and the prestressed ground anchor all need to excavate a large range of the mountain, and the forest vegetation is damaged; (3) in order to resist the backward prestressed anchor cable force of the prestressed ground anchor, the mountain needs to provide sufficient horizontal foundation bearing capacity for the ground anchor, and with the increase of the maximum lifting capacity and the span of the cable crane, the cross-sectional size of the ground anchor also increases.

[0003] A certain bridge construction project has a main span of 310m of the half-through steel truss basket arch bridge, and adopts the cable crane construction method to construct the superstructure. The bridge site is a deep U-shaped valley, a cliff and a precipice, the terrain is complex, the site is narrow, the cable tower and the ground anchor position of the cable crane are difficult to select, and the bridge site is located in a forest protection area, so a towerless cable crane is selected, and the load bearing rope is directly anchored to the two sides of the mountain by the prestressed ground anchor, but a large construction site is still needed for the prestressed ground anchor, and a large range of the two sides of the mountain is excavated, which causes problems of large cost investment, environmental damage, high safety risk and the like. Therefore, it is necessary to design a towerless cable crane load bearing rope anchorage device and a cable crane with small cost investment, small construction influence, high safety and no environmental restriction. UTILITY MODEL CONTENTS

[0004] The utility model discloses a purpose at solving the at least one of above -mentioned insufficient of prior art. For example, one of the purposes of the utility model is to provide a kind of towerless cable crane load-bearing rope anchoring device suitable for various terrain environment, and the utility model discloses another purpose is to provide a kind of efficient cable crane.

[0005] To achieve the above object, the utility model provides a kind of towerless cable crane load-bearing rope anchoring device in one aspect, the anchoring device can include vertical pile foundation, tether beam, oblique pile foundation and prestressed anchor cable, wherein, vertical pile foundation is arranged in parallel with certain interval, vertical pile foundation top end is equipped with bearing platform, tether beam is arranged between bearing platform;Load-bearing rope can move laterally on tether beam;Oblique pile foundation is connected with bearing platform, and the end surface area of one end of oblique pile foundation and bearing platform connection is less than the end surface area of other end;Prestressed anchor cable is arranged at the end of oblique pile foundation away from bearing platform.

[0006] According to one or more exemplary embodiments of the utility model in one aspect, the tether beam can be provided with load-bearing rope anchoring sliding sleeve in the direction of load-bearing rope lateral movement.

[0007] According to one or more exemplary embodiments of the utility model in one aspect, the bearing platform can be provided with anchor pier at the opposite end of oblique pile foundation connection end, and the end surface of anchor pier is perpendicular to prestressed anchor cable.

[0008] According to one or more exemplary embodiments of the utility model in one aspect, the size of anchor pier can be greater than the anchor plate size of prestressed anchor cable.

[0009] According to one or more exemplary embodiments of the utility model in one aspect, the end of bearing platform provided with anchor pier can be provided with hoisting rope turning ring.

[0010] According to one or more exemplary embodiments of the utility model in one aspect, the distance of hoisting rope turning ring from bearing platform can be above 50cm.

[0011] According to one or more exemplary embodiments of the utility model in one aspect, the width of the collar of vertical pile foundation can be above 10m.

[0012] According to one or more exemplary embodiments of the utility model in one aspect, the rock penetration depth of oblique pile foundation when rock penetration can be above 1m.

[0013] According to one or more exemplary embodiments of the utility model in one aspect, the longitudinal and horizontal spacing of prestressed anchor cable tensioning end can be above 70cm.

[0014] The utility model provides a kind of cable crane in another aspect, the cable crane can include the towerless cable crane load-bearing rope anchoring device and towerless cable crane load-bearing rope described above, and the towerless cable crane load-bearing rope can be fixed on tether beam.

[0015] Compared with the prior art, the beneficial effects of the utility model include at least one of the following contents:

[0016] (1) The anchor device provided by the utility model needs small construction site, and can adapt to various geographical environments.

[0017] (2) The anchor device provided by the utility model directly transmits cable crane bearing rope load to the mountain through the form of vertical pile foundation, inclined pile foundation and prestressed anchor cable, reduces the concrete consumption of the anchor device, and saves the cost.

[0018] (3) The cable crane provided by the utility model can avoid large-area excavation of the mountain, and reduce the environmental damage. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other objects and / or characteristics of the utility model will become more apparent from the following description made with reference to the accompanying drawings, in which:

[0020] Figure 1 Fig. 1 shows the structure diagram of the bearing rope anchor device of one exemplary embodiment of the utility model;

[0021] Figure 2 Fig. 2 shows the structure side view of the bearing rope anchor device of one exemplary embodiment of the utility model.

[0022] MAIN REFERENCE NUMERALS EXPLANATION:

[0023] 1-vertical pile foundation, 2-bearing platform, 3-rope beam, 4-inclined pile foundation, 5-prestressed anchor cable, 6-anchor pier, 7-hoisting rope turning ring, 8-bearing rope anchor sliding sleeve, 9-towerless cable crane bearing rope, 10-slope line, 11-anchoring section. DETAILED DESCRIPTION

[0024] In the following, one towerless cable crane bearing rope anchor device and cable crane of the utility model will be described in detail in combination with exemplary embodiments.

[0025] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application 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, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0027] First exemplary embodiment

[0028] The present exemplary embodiment provides a tower-free cable crane load-bearing rope anchoring device.

[0029] Figure 1 The structural schematic diagram of the load-bearing rope anchoring device of one exemplary embodiment of the present application is shown; Figure 2 The structural side view of the load-bearing rope anchoring device of one exemplary embodiment of the present application is shown. The tower-free cable crane load-bearing rope anchoring device of the present exemplary embodiment will be described below in combination with Figures 1-2

[0030] In the present exemplary embodiment, the tower-free cable crane load-bearing rope anchoring device is also a tower-free cable crane load-bearing rope anchoring device that can be used for hoisting an arch bridge under steep cliff conditions, as shown in Figure 1 or 2, which mainly comprises vertical pile foundations 1, tethering beams 3, inclined pile foundations 4 and prestressed anchor cables 5, wherein the vertical pile foundations 1 are arranged in parallel at a certain interval, and the vertical pile foundations 1 can be used to resist the vertical component force of the prestressed anchor cables 5 and the load-bearing rope. In addition, the vertical pile foundations 1 can adopt a reinforced concrete structure, which is easy to obtain and has low construction and maintenance costs on the basis of ensuring structural strength and stability; the vertical pile foundations 1 are provided with bearing platforms 2 at the top ends, and the bearing platforms 2 can adopt a cubic structure of reinforced concrete, which is stable in structure. The tethering beams 3 are arranged between the bearing platforms 2, and the two ends of the tethering beams 3 can be respectively anchored and connected with the bearing platforms 2, the tethering beams 3 can be used to anchor the cable crane load-bearing rope and provide a track for the horizontal movement of the load-bearing rope, and the load-bearing rope can move horizontally on the tethering beams 3; the inclined pile foundations 4 are connected with the bearing platforms 2, the end face area of one end of the inclined pile foundations 4 connected with the bearing platforms 2 is smaller than that of the other end, and the inclined pile foundations 4 can be used to resist the tension of the prestressed anchor cables 5 in the early stage to reduce the excavation amount of the mountain. The inclined pile foundations 4 can adopt an expanded reinforced concrete platform structure; the prestressed anchor cables 5 are arranged in a diffused manner at one end of the inclined pile foundations 4 away from the bearing platforms, and the prestressed anchor cables 5 can be arranged in a diffused manner to reduce the structural size of the bearing platforms 2 and the inclined pile foundations 4. The prestressed anchor cables 5 can be used to bear the horizontal force of the cable crane load-bearing rope, and the prestressed anchor cable 5 construction should be completed before the installation of the load-bearing rope.

[0031] ​In the example embodiment, the cross-sectional shape of the tether beam can include a round or square shape, and the tether beam is made of a reinforced concrete structure with a steel pipe wrapped outside. The wrapped steel pipe can be used as a formwork during the concrete pouring stage of the tether beam. The length of the tether beam can be determined according to the required horizontal movement distance during the hoisting of the arch bridge, combined with the length of the sliding sleeve, and considering a certain safety distance or maintenance space of the sliding sleeve, that is, the length of the tether beam = the horizontal movement distance during the hoisting of the arch bridge + the length of the load-bearing rope anchoring sliding sleeve + safety distance / maintenance space. The structural size of the tether beam can be determined according to the load of the load-bearing rope and the diameter of the load-bearing rope winding, and the maximum bending moment when the load-bearing rope is located in the midspan and the maximum shear force when the load-bearing rope is located in the side span are ensured, and a safety factor of 1.35 is considered.

[0032] In the example embodiment, as shown in Figure 1 , the tether beam 3 can be provided with a load-bearing rope anchoring sliding sleeve 8 in the direction of the horizontal movement of the load-bearing rope. The load-bearing rope can be fixed to the tether beam 3 through the load-bearing rope anchoring sliding sleeve 8.

[0033] In the example embodiment, as shown in Figure 1 or 2, the anchor pier 6 is provided at the end of the abutment 2 opposite to the connecting end of the inclined pile foundation 4, and the end face of the anchor pier 6 is perpendicular to the prestressed anchor cable 5. The anchoring end of the prestressed anchor cable 5 is connected to the mountain and fixed to the slope, and the other end of the prestressed anchor cable 5 can be fixed to the end face of the anchor pier 6 in the form of an anchor plate + an anchor device + a clamping piece. The end face of the anchor pier 6 perpendicular to the prestressed anchor cable 5 can better bear the force, so that the anchor pier 6 only bears a vertical pressure.

[0034] In the example embodiment, as shown in Figure 2 , the size of the anchor pier 6 is larger than the size of the anchor plate in the prestressed anchor cable 5. Here, the prestressed anchor cable 5 mainly consists of grouting material + steel strand + anchor plate + anchor device + clamping piece. The anchor pier 6 is a protruding structure, and the size of the anchor pier 6 is larger than the size of the anchor plate, so that the load of the prestressed anchor cable 5 can be completely and uniformly transmitted to the anchor pier 6. If the size of the anchor plate is larger than the size of the anchor pier 6, the outer edge of the anchor plate will be suspended, which will affect the force.

[0035] In the example embodiment, as shown in Figure 1As shown in FIG. 1, the prestressed anchor cable 5 can be provided with multiple prestressed anchor cables 5, and the diffusion angle of the outermost prestressed anchor cable 5 is consistent with the diffusion angle of the inclined pile 4. Here, the diffusion angle of the outermost prestressed anchor cable 5 is consistent with the diffusion angle of the inclined pile 4, which can make full use of the diffusion angle of the inclined pile 4. If the diffusion angles of the two are inconsistent, for example, the diffusion angle of the prestressed anchor cable 5 is larger, the prestressed anchor cable 5 can be out of the side wall of the inclined pile, which cannot meet the requirement that the distance between the prestressed anchor cable 5 and the edge of the pile cap and the inclined pile 4 is greater than 50 cm. If the diffusion angle of the prestressed anchor cable 5 is smaller, the inclined pile 4 can be made smaller and closer to the prestressed anchor cable 5, which will use more concrete. Therefore, preferably, the diffusion angle of the outermost prestressed anchor cable 5 is consistent with the diffusion angle of the inclined pile 4, which is best to save concrete while meeting the construction requirements. The prestressed anchor cable 5 can be made of steel strand, for example, made of steel strand with a level of 1860 MPa and a diameter of Ф15.2 mm or Ф12.7 mm.

[0036] In the present exemplary embodiment, as shown in FIG. 1, Figure 1 As shown in FIG. 2, the end of the pile cap 2 provided with the anchor pier 6 is provided with a lifting rope turning ring 7, and the distance between the lifting rope turning ring 7 and the edge of the pile cap 2 is not less than 50 cm. The lifting rope turning ring 7 can be made of HPB300 round steel bar. The specific size and embedded depth can be determined according to the tension calculation of the traction and lifting rope. According to the number of cable cranes anchored on the tower-free cable crane bearing rope anchoring device, two lifting rope turning rings 7 can be provided for each group of cable cranes.

[0037] In the present exemplary embodiment, the size and length of the vertical pile foundation should be determined through the calculation of the foundation bearing capacity, and the width of the vertical pile foundation should not be less than 10 m, for example, 11 m, 13 m or 15 m.

[0038] In the present exemplary embodiment, the length of the inclined pile and the size of the end surface close to the rock surface can be determined according to the terrain, geological conditions and foundation bearing capacity. Moreover, the depth of the inclined pile into the rock should not be less than 1 m, for example, 2 m, 3 m or 4 m, that is, as shown in FIG. 1, the depth of the inclined pile 4 into the rock, that is, the depth of the inclined pile 4 buried in the slope line 10, should not be less than 1 m. Figure 2

[0039] In the present exemplary embodiment, the distance between the prestressed anchor cable and the edge of the pile cap and the inclined pile should not be less than 50 cm, for example, 52 cm, 53 cm or 57 cm; the longitudinal and transverse distance between the adjacent prestressed anchor cable tension ends should not be less than 70 cm, for example, 72 cm, 73 cm or 77 cm; as shown in FIG. 1, the distance between the adjacent prestressed anchor cables 5 at the starting point of the anchoring section 11 should not be less than 1.5 m, for example, 1.7 m, 2.1 m or 2.3 m. Figure 2

[0040] Second exemplary embodiment​​

[0041] The present exemplary embodiment provides a cable crane.

[0042] Figure 1 The structure diagram of the load bearing rope anchoring device of one exemplary embodiment of the present utility model is shown. Figure 2 The structure side view of the load bearing rope anchoring device of one exemplary embodiment of the present utility model is shown. Figures 1-2 The cable crane of the present exemplary embodiment will be described below.

[0043] In the present exemplary embodiment, as shown in Figure 1 or 2, the cable crane mainly comprises the towerless cable crane load bearing rope anchoring device and the towerless cable crane load bearing rope 9 of the first exemplary embodiment described above, and the towerless cable crane load bearing rope 9 is fixed on the bolt rope beam 3.

[0044] In summary, the advantages of the present utility model can include at least one of the following contents:

[0045] (1) The cable crane provided by the present utility model is easy to arrange prestressed anchoring, can significantly save cost, and protect the natural environment.

[0046] (2) The anchoring device provided by the present utility model has low cost investment and low safety risk in the construction process.

[0047] (3) The cable crane provided by the present utility model has small environmental impact, does not need to cause large-scale excavation on the mountain and other environment, and has small environmental recovery pressure.

[0048] Although the towerless cable crane load bearing rope anchoring device and the cable crane of the present utility model have been described above by combining the exemplary embodiments, it should be clear for those skilled in the art that various modifications and changes can be made to the exemplary embodiments of the present utility model without departing from the spirit and scope defined by the claims.

Claims

1. A towerless cable-stayed crane load-bearing rope anchoring device, characterized in that, The anchoring device includes a vertical pile foundation, a rope-tying beam, an inclined pile foundation, and prestressed anchor cables, wherein... Vertical piles are arranged in parallel at certain intervals, with a pile cap at the top of each pile. A rope-tying beam is set between the pile caps. The load-bearing rope can move laterally on the rope-tying beam. Inclined piles are connected to the pile caps, and the end face area of ​​the inclined pile connected to the pile cap is smaller than the end face area of ​​the other end. Prestressed anchor cables are set at the end of the inclined pile that is away from the pile cap.

2. The towerless cable-stayed crane load-bearing rope anchoring device according to claim 1, characterized in that, The rope anchoring sleeve is provided on the rope-tying beam in the direction of the lateral movement of the load-bearing rope.

3. The towerless cable-stayed crane load-bearing rope anchoring device according to claim 1, characterized in that, The pier cap is provided with an anchor block at the opposite end to the end connected to the inclined pile foundation, and the end face of the anchor block is perpendicular to the prestressed anchor cable.

4. The towerless cable crane load-bearing rope anchoring device according to claim 3, characterized in that, The size of the anchor block is larger than the size of the anchor plate of the prestressed anchor cable.

5. The towerless cable-stayed crane load-bearing rope anchoring device according to claim 3, characterized in that, One end of the pier with the anchor is equipped with a lifting rope deflector.

6. The towerless cable-stayed crane load-bearing rope anchoring device according to claim 5, characterized in that, The distance between the lifting rope deflector and the support platform is more than 50cm.

7. The towerless cable-stayed crane load-bearing rope anchoring device according to claim 1, characterized in that, The width of the flange of the vertical pile foundation is more than 10m.

8. The towerless cable-stayed crane load-bearing rope anchoring device according to claim 1, characterized in that, The inclined pile foundation has a rock penetration depth of more than 1m when it is driven into the rock.

9. The towerless cable-stayed crane load-bearing rope anchoring device according to claim 1, characterized in that, The spacing between the tensioning ends of the prestressed anchor cables is more than 70cm.

10. A cable crane, characterized in that, The cable crane includes the towerless cable crane load-bearing rope anchoring device and the towerless cable crane load-bearing rope as described in any one of claims 1 to 9, wherein the towerless cable crane load-bearing rope is fixed to the rope-tying beam.

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