Flexible exposed shed for isolating and protecting falling rocks

Abstract

The utility model provides a flexible exposed shed for isolating and protecting rockfall, which relates to the technical field of rockfall disaster protection and comprises a plurality of steel arches and a protective net, the steel arches are sequentially arranged at intervals along the length direction, each steel arch comprises an arc-shaped arch, two upright posts and two first support clamping cables, the arc-shaped arch and the upright posts are U-shaped steel plates, and the protective net is arranged on the arc-shaped arch. The stand columns are vertically arranged, arc-shaped bent transition sections are arranged at the upper ends of the stand columns, the two ends of the arc-shaped arch are attached to the transition sections of the two stand columns respectively and are fixedly connected with the transition sections through the two first support clamping cables respectively, and the protective net is laid on the steel arches. The utility model has the beneficial effects that high-efficiency buffering and energy-absorbing effects are achieved on the impact of falling rocks or flying rocks on a hillside, the impact deformation resistance is improved, the risk of overall collapse is reduced, the construction is convenient and fast, and the construction period is shortened; and only the impacted part is damaged during falling stone impact, the risk of overall collapse is avoided, only the damaged arc-shaped arch and the damaged stand column need to be replaced, and the advantages that construction is rapid, and follow-up maintenance is convenient are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rockfall disaster protection technical field especially relates to a flexible open shed for isolating and protecting rockfall. BACKGROUND

[0002] In the field of mountainous area traffic construction and geological disaster prevention, rockfall disaster has been a serious challenge. Rockfall disaster frequently occurs in mountainous areas, posing a great threat to traffic facilities and pedestrian safety under slopes, and the complex engineering geology and hydrogeology conditions make the traditional highway slope retaining structure face many restrictions. Traditional rockfall prevention measures include active protection and passive protection. Although active protection can enhance the stability of dangerous rock mass from the root, it often damages the surrounding environment and is costly, so passive protection is more commonly used in practice. Among them, the open shed structure can coordinate with complex terrain and has good protection performance, so it becomes the first choice in specific areas, such as river gorges, mountainous areas and high-slope sections outside tunnel portals.

[0003] However, the current open shed is mostly a reinforced concrete protective shed structure, but this type of reinforced concrete protective shed structure has problems such as poor deformation capacity when impacted, long construction period, and is not conducive to later maintenance. SUMMARY

[0004] Therefore, in order to solve the problems of poor deformation capacity when impacted, long construction period and poor later maintenance of the current open shed, the embodiments of the utility model provide a flexible open shed for isolating and protecting rockfall.

[0005] The embodiments of the utility model provide a flexible open shed for isolating and protecting rockfall, which comprises a plurality of steel arches and a protective net, wherein each steel arch is sequentially and spacedly arranged along the length direction, each steel arch comprises an arc-shaped arch, two vertical columns and two first support cable clamps, wherein the arc-shaped arch and the vertical column are both U-shaped steel plates, the vertical column is vertically arranged and has an arc-shaped bent transition section at the upper end, the arc-shaped arch is tightly connected with the transition sections of the two vertical columns at both ends by the two first support cable clamps, and the protective net is laid on each steel arch.

[0006] Further, the U-shaped steel plate comprises a main body part in the middle and bent parts on both sides of the main body part, the main body part is in a parabolic shape, the bent parts are bent at acute angles relative to the main body part, the main body part of the end part of the arc-shaped arch is tightly connected with the main body part of the transition section, and the two bent parts of the end part of the arc-shaped arch are respectively embedded with the two bent parts of the transition section.

[0007] Further, the first support cable clamp comprises a cable clamp seat, a U-shaped hoop and two fastening bolts, the U-shaped hoop is attachable to the outer surface of the main body part of the U-shaped steel plate, the cable clamp seat is abutted against the two bent parts of the other U-shaped steel plate, and the two fastening bolts are connected with the two ends of the U-shaped hoop and the cable clamp seat respectively, so as to fasten and connect the two U-shaped steel plates.

[0008] Further, a plurality of scissors supports are arranged between and connected to adjacent two columns.

[0009] Further, two second support cable clamps are arranged on the column, and four second support cable clamps on adjacent two columns are arranged in a rectangular shape, and each scissors support is connected to four second support cable clamps.

[0010] Further, a plurality of transverse supports are arranged along the length direction and sequentially connected to the steel arches.

[0011] Further, a concrete foundation is arranged, and the lower end of each column is connected to the concrete foundation through an anchor.

[0012] Further, the protective net is woven by steel wires and steel strands.

[0013] Further, the steel arches and the protective net are provided with an anti-corrosion plating layer.

[0014] The technical scheme provided by the embodiment of the utility model has the beneficial effects that:

[0015] 1. The flexible open shed for isolating and protecting falling rocks is composed of a plurality of steel arches and protective nets, wherein the steel arches are composed of an arc-shaped arch and two columns, the arc-shaped arch and the column are U-shaped steel plates, the arc-shaped arch and the column are attachable and detachably fastened by the first support cable clamp, the steel arches and the protective nets have high efficient buffering and energy absorption effects on mountain slope falling rocks or flying rock impacts, the impact deformation resistance is improved, the overall collapse risk is reduced, the steel arches adopt a detachable three-section structure, the construction is convenient, and the construction period is shortened.

[0016] 2. The flexible open shed for isolating and protecting falling rocks is composed of a plurality of steel arches and protective nets, wherein the arc-shaped arch and the column are U-shaped steel plates, and are detachably fastened by the first support cable clamp, when the falling rocks impact, only the impacted part of the steel arches and the protective nets is damaged, the overall collapse risk is avoided, and only the damaged arc-shaped arch and column need to be replaced during subsequent maintenance, so that the construction is fast and the subsequent maintenance is convenient.

[0017] 3. The utility model discloses a flexible open shed for isolating and protecting falling rocks, and the arc-shaped arch and the stand are selected U-shaped steel as the main structural material, compared with the half I-shaped steel commonly used in the traditional protection structure, the U-shaped steel has unique advantages in the cross-section geometric characteristics, the cross-section moment of inertia of the U-shaped steel is significantly increased, and the structure is endowed with stronger bending resistance, and the bearing capacity and stability of the protection structure can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the utility model discloses a flexible open shed for isolating and protecting falling rocks;

[0019] Figure 2 is the front view of the utility model discloses a flexible open shed for isolating and protecting falling rocks;

[0020] Figure 3 is the plan view of the utility model discloses a flexible open shed for isolating and protecting falling rocks;

[0021] Figure 4 is the left view of the utility model discloses a flexible open shed for isolating and protecting falling rocks;

[0022] Figure 5 is the cross-section view of U-shaped steel plate;

[0023] Figure 6 is the connecting schematic diagram of arc-shaped arch and transition section;

[0024] Figure 7 is the schematic diagram of concrete foundation.

[0025] In the drawing: 1, steel arch; 2, protective net; 3, transverse support; 4, scissor support; 5, concrete foundation; 6, road; 7, stand; 8, arc-shaped arch; 9, transition section; 10, anchor bolt; 11, pre-buried steel plate; 12, first support cable clamp; 13, second support cable clamp; 14, main body part; 15, bending part; 16, U-shaped hoop; 17, cable clamp seat; 18, fastening bolt. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the utility model more clear, the following will be further described to the utility model embodiment in conjunction with the drawings. The following introduces the more optimal one in the multiple possible embodiments of the utility model, and is intended to provide the basic understanding to the utility model, but is not intended to confirm the key or decisive element of the utility model or limit the range to be protected.

[0027] In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Thus, other examples of the example embodiments can have different values.

[0028] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art(s) can not be discussed in detail herein. However, where appropriate, the described techniques, methods, and apparatus should be considered as part of the described application.

[0029] It should be noted that like reference numerals and letters refer to like items throughout the several views, and each of the several views should not necessarily be further discussed, once an item is defined in one view.

[0030] It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Please refer to Figures 1-4 The embodiment of the present application provides a flexible shed for isolating and protecting falling rocks, which comprises a plurality of steel arches 1 and a protective net 2.

[0032] Each of the steel arches 1 is arranged along the length direction in sequence and at intervals, and each of the steel arches 1 constitutes the support framework of the flexible shed for isolating and protecting falling rocks. The number of the steel arches 1 can be flexibly set according to the actual needs of falling rock protection, and generally each of the steel arches 1 is arranged along the length direction in sequence and at equal intervals.

[0033] Combined with Figure 5 and 6 Each of the steel arches 1 comprises an arc-shaped arch 8, two upright columns 7 and two first support clamping cables 12, wherein the arc-shaped arch 8 and the upright column 7 are both U-shaped steel plates, the upright column 7 is vertically arranged and provided with an arc-shaped transition section 9 at the upper end, and the arc-shaped arch 8 is respectively connected with the transition sections 9 of the two upright columns 7 at both ends and is fastened by the two first support clamping cables 12. The arc-shaped arch 8 and the two upright columns 7 at both ends thereof constitute a three-section steel arch 1, and the top arch structure of the steel arch 1 is designed in this way, so that when the falling rock hits, the arch body can disperse and transmit the impact force along the curve, so that the stress concentration at the impact point is effectively reduced.

[0034] The U-shaped steel plate is a hot-rolled U-shaped steel, i.e. a hot-rolled U-shaped section steel, such as a 29U-shaped steel. Specifically, the U-shaped steel plate comprises a main body portion 14 in the middle and bending portions 15 on both sides of the main body portion 14. The main body portion 14 is in a parabolic shape, and the bending portions 15 are bent at acute angles relative to the main body portion 14. The main body portion 14 at the end of the arc-shaped arch 8 is attached to the main body portion 14 of the transition section 9, and the two bending portions 15 at the end of the arc-shaped arch 8 are respectively embedded in the two bending portions 15 of the transition section 9. Since the main body portion 14 is in a parabolic shape, when the main body portion 14 at the end of the arc-shaped arch 8 is attached to the main body portion 14 of the transition section 9, it is automatically positioned and the relative movement of the two main body portions 14 is limited.

[0035] More specifically, the first support cable clamp 12 comprises a cable clamp seat 17, a U-shaped hoop 16 and two fastening bolts 18. The U-shaped hoop 16 can be attached to the outer surface of the main body portion 14 of one of the U-shaped steel plates, the cable clamp seat 17 is in abutment with the two bending portions 15 of another U-shaped steel plate, and the two fastening bolts 18 are respectively connected to the two ends of the U-shaped hoop 16 and the two ends of the cable clamp seat 17, thereby fastening and connecting the two U-shaped steel plates. The attachment portion of the arc-shaped arch 8 and the transition section 9 can be provided with a plurality of first support cable clamps 12, and the plurality of first support cable clamps 12 are arranged along the length direction of the transition section 9 at intervals, which can more stably connect the arc-shaped arch 8 and the column 7.

[0036] The protective net 2 is laid on each of the steel arches 1, and the protective net 2 and each of the steel arches 1 are fixed by binding to have no gap therebetween. The protective net 2 is used to accept the impact of falling rocks and produce deformation, has a high efficient buffering and energy absorption effect when impacted by mountain slope falling rocks or flying rocks, and to a certain extent, avoids damaging the steel arches 1. The protective net 2 is generally woven by steel wires and steel strands, and has high strength.

[0037] In some embodiments, the flexible shed for isolating and protecting falling rocks further comprises a plurality of scissors supports 4, which are in an X shape, and each scissors support 4 is arranged between and connected to two adjacent columns 7. The scissors supports 4 can be arranged in multiple rows and columns, and the lateral deformation of the flexible shed for isolating and protecting falling rocks is constrained by the scissors supports 4, the lateral stiffness is increased, and the ability to resist lateral deformation is improved.

[0038] The scissors support 4 is generally fixedly connected with the column 7 by a support clamp cable. As shown in the column 7 is provided with two second support clamp cables 13 arranged at intervals, the second support clamp cable 13 is similar in structure to the first support clamp cable 12, and can be fixedly clamped around a single U-shaped steel plate. Four second support clamp cables 13 on adjacent two columns 7 are arranged in a rectangle, and each scissors support 4 is connected with four second support clamp cables 13.

[0039] In some embodiments, the flexible shed for isolating and protecting falling rocks further comprises a plurality of transverse supports 3, each of which is arranged along the length direction and sequentially connected with the steel arches 1. Some of the transverse supports 3 are sequentially connected with the columns 7, and some of the transverse supports 3 are sequentially connected with the arc-shaped arches 8. The transverse supports 3 further increase the transverse stiffness and improve the ability to resist transverse deformation.

[0040] In addition, the flexible shed for isolating and protecting falling rocks further comprises a concrete foundation 5, and the lower end of each column 7 is connected with the concrete foundation 5 by an anchor. Figure 7 As shown in the drawings, in the embodiment, the concrete foundation 5 is arranged on both sides of the road 6, and the embedded steel plate 11 and the anchor bolt 10 are arranged in the concrete foundation 5. The lower end of the column 7 is fastened with the anchor bolt 10, so that the column 7 is fixed on one side of the road 6.

[0041] Considering that the working environment of the shed is relatively complex, as a protective structure for long-term use, in order to ensure the durability of the shed, the steel arches 1 and the protective nets 2 are both provided with an anti-corrosion coating, such as a surface galvanizing (i.e. 5% Al-Zn alloy + rare earth elements) anti-corrosion treatment.

[0042] The flexible shed for isolating and protecting falling rocks of the utility model is arranged in a falling rock protection area, has a high-efficiency buffering and energy absorption effect on the impact of mountain slope falling rocks or flying rocks by the steel arches 1 and the protective nets 2, improves the impact deformation resistance, can effectively reduce the risk of overall collapse, is convenient to construct, and shortens the construction period. When the steel arches 1 and the protective nets 2 are impacted by falling rocks, only the impacted parts are damaged, the risk of overall collapse is avoided, and in subsequent maintenance, only the damaged arc-shaped arches 8 and columns 7 need to be replaced, so that the utility model has the advantages of quick construction and convenient subsequent maintenance.

[0043] In this document, the front, back, up, down and other orientation words are defined according to the position of the parts in the drawings and the position of the parts relative to each other, only for the purpose of expressing the technical scheme clearly and conveniently. It should be understood that they are relative concepts, which can be changed accordingly according to different ways of use and placement, and the use of the orientation words should not limit the scope of the application.

[0044] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other. The above description is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A flexible canopy for protecting against falling rocks, characterized in that: The steel arch support comprises a plurality of steel arches and a protective net, wherein the steel arches are arranged in sequence along the length direction, each of the steel arches comprises an arc-shaped arch, two vertical columns and two first support clamps, the arc-shaped arch and the vertical columns are both U-shaped steel plates, the vertical columns are vertically arranged and provided with arc-shaped transition sections at the upper ends, the arc-shaped arches are respectively connected with the transition sections of the two vertical columns through the two first support clamps, and the protective net is arranged on the steel arches.

2. A flexible roof shelter for protecting against falling rocks as claimed in claim 1 wherein: The U-shaped steel plate comprises a main body part in the middle and bending parts on both sides of the main body part, the main body part is in a parabolic shape, the bending parts are bent at acute angles relative to the main body part, the main body part of the end of the arc-shaped arch is connected with the main body part of the transition section, and the two bending parts of the end of the arc-shaped arch are respectively embedded in the two bending parts of the transition section.

3. A flexible roof shelter for protecting against falling rocks as claimed in claim 2 wherein: The first support clamp comprises a clamp seat, a U-shaped hoop and two fastening bolts, the U-shaped hoop is capable of being connected with the outer surface of the main body part of one of the U-shaped steel plates, the clamp seat is capable of being connected with the two bending parts of another U-shaped steel plate, and the two fastening bolts are respectively connected with the two ends of the U-shaped hoop and the two ends of the clamp seat, so as to fasten the two U-shaped steel plates.

4. A flexible roof shelter for protecting against falling rocks as claimed in claim 1 wherein: A plurality of scissors supports are further arranged, each of the scissors supports is arranged between two adjacent vertical columns and connected with the two vertical columns.

5. A flexible roof shelter for protecting against falling rocks as claimed in claim 4 wherein: Second support clamps are arranged on the vertical columns, four second support clamps on two adjacent vertical columns are arranged in a rectangular shape, and each of the scissors supports is connected with four second support clamps.

6. A flexible roof shelter for protecting against falling rocks as claimed in claim 1 wherein: A plurality of transverse supports are further arranged, each of the transverse supports is arranged along the length direction and connected with the steel arches in sequence.

7. A flexible roof shelter for protecting against falling rocks as claimed in claim 1 wherein: A concrete foundation is further arranged, and the lower ends of the vertical columns are connected with the concrete foundation through anchorage devices.

8. A flexible roof shelter for protecting against falling rocks as claimed in claim 1 wherein: The protective net is woven by steel wires and steel strands.

9. A flexible roof shelter for protecting against falling rocks as claimed in claim 1 wherein: The steel arch support and the protective net are both provided with an anti-corrosion plating layer.

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