CN217580213U

CN217580213U - Cantilever construction platform for anchor cable support

Info

Publication number: CN217580213U
Application number: CN202220913246.8U
Authority: CN
Inventors: 应慧能; 金永刚; 占懿; 吴俊磊; 李忠; 郭丹
Original assignee: Sinohydro Bureau 12 Co Ltd
Current assignee: Sinohydro Bureau 12 Co Ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-10-14
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses a construction platform that encorbelments of anchor rope support for upright excavation rock matter side slope, including a plurality of girder and the side slope stock of encorbelmenting according to the certain interval anchor inside the slope body, the girder setting of encorbelmenting is in the below of side slope stock, vertically erects and fixedly connected with yoke on the girder of encorbelmenting, and the last transverse pavement of yoke has been laid the guidance tape, and the girder of encorbelmenting stretches out fixedly connected with stay cord between the outer one end of slope body and the side slope stock. The installation is dismantled conveniently and high-efficiently, save time moreover, improve the efficiency of construction, reduce the safe civilized construction management and control degree of difficulty.

Description

Cantilever construction platform for anchor cable support

Technical Field

The utility model relates to a side slope support construction platform technical field, concretely relates to construction platform of encorbelmenting suitable for excavation rock matter side slope anchor rope is strutted upright.

Background

The hydropower station is built in the highland area of Sichuan Tibet, the scale of the hydropower station is very large, a large amount of high slope projects are inevitably required to be excavated to form due to the arrangement requirements of various engineering buildings (dam projects, diversion projects, water diversion power generation projects, water drainage projects and a large amount of traffic road projects), and the excavation slope of a large amount of buildings reaches 300-500 m for a high dam with 200-300 m level. Therefore, the rapid construction technology of the high slope becomes one of the key technical problems of success and failure of the hydropower engineering construction. The geological conditions of the zang and Fu district are very complicated, the river valley is deep and narrow, the valley slope is steep, the rock mass unloading is strong, the geological disaster development, the geological structure is complicated, the earthquake intensity is high, and the stability of the natural bank slope is poor. These factors determine that strong support measures (such as deep and long anchorage of anchor cables) must be taken for the high excavation slope during the design and implementation processes.

The anchor cable construction is a key project for restricting the overall progress of the high slope excavation support, if the anchor cable construction progress is delayed, the slope bench excavation progress is severely restricted, and then the overall progress is dragged. In order to ensure slope stability and limit unloading relaxation, the design requires that the height difference between an excavation working surface and a prestressed anchor cable in a permanent support is not more than 30m. After the excavated bench section is lowered to the height of the pavement (or the bottom plate surface), a floor type steel pipe scaffold is erected to perform the operation of the anchor cable construction process, and the operation of erecting the operation platform → drilling → cable lowering grouting → anchor pier pouring → tensioning → anchor sealing can occupy a long linear construction period, and if the anchor cable construction cannot be followed in time, the stability of the slope is not good.

The anchor rope construction console mode scaffold operation platform that traditional technique adopted a large amount of steel pipes to set up and form step or following the slope formula, anchor rope construction each item process is gone on the platform, mainly has following shortcoming:

1. the method comprises the following steps of (1) constructing wall connecting pieces along a slope surface, building a steel pipe scaffold from bottom to top, fully paving scaffold boards on each layer of operation platform, paving safe flat nets, safe vertical nets and the like according to the standard requirements, wherein the whole process is time-consuming and labor-consuming, has large interference with other processes, and has prominent potential safety hazard problems;

2. a large amount of steel pipes are needed for building the platform, and the material overstock phenomenon is very serious;

3. the erection of the scaffold can be arranged only after the side slope is completely excavated, and the lapping operation of the working procedures cannot be effectively carried out;

4. the steel pipe scaffold platform relates to a large amount of safe, civilized construction operation requirements, and construction safety risk is high, and management work volume is great.

SUMMERY OF THE UTILITY MODEL

The utility model provides a construction platform of encorbelmenting suitable for upright excavation rock matter side slope (including the sloping) anchor rope is strutted to solve the problem among the prior art.

The utility model provides an anchor rope support's construction platform of encorbelmenting for upright excavation rock matter side slope, includes a plurality of main girders of encorbelmenting and the side slope stock of anchoring according to the determining deviation in slope internal portion, and the main girder of encorbelmenting sets up in the below of side slope stock, vertically erects and fixedly connected with yoke on the main girder of encorbelmenting, and the horizontal pavement board of having laid on the yoke, and the main girder of encorbelmenting stretches out fixedly connected with stay cord between the outer one end of slope body and the side slope stock. Set up the stay cord between girder and the side slope stock of encorbelmenting, need not set up the diagonal bracing in girder below of encorbelmenting, installation fixed convenience reduces the operating risk.

The further technical scheme is as follows: the outer edge of the walkway plate is provided with an assembled guard rail. Assembled protection railing simple to operate can drop into operation fast, and is safe high-efficient.

The further technical scheme is as follows: the coupling beam is provided with two, and parallel arrangement and perpendicular connection are on the girder of encorbelmenting between two coupling beams.

The further technical scheme is as follows: the cantilever girder is welded with a hinge type lock catch, and the coupling girder is connected with the girder through the hinge type lock catch. The hinge type lock catch is convenient to install, the workload of on-site welding can be reduced, and the construction efficiency is improved.

The further technical scheme is as follows: the cantilever main beam and the coupling beam are made of section steel, and the pull rope is made of a steel wire rope. The construction platform of encorbelmenting is steel construction platform, economic safety, circulated use, and the high-usage.

The utility model has the advantages that:

the utility model provides an overhanging construction platform which is suitable for upright side slopes (including bevel slopes) and deep support of large-area anchor cables, can be quickly and safely installed and disassembled, not only saves labor and materials, but also has high repeated utilization rate and saves resources; the lapping operation can be carried out by erecting the cantilever construction platform and excavating the bench, so that the time is saved, and the construction efficiency is effectively improved; the control difficulty of safe civilized construction of each participating party is greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

in the figure:

1. cantilever girder, 2, tie beam, 3, side slope stock, 4, guidance tape, 5, stay cord, 6, assembled protection railing, 7, hinge type hasp, 8, side slope.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a construction platform that encorbelments that anchor rope was strutted for upright excavation rock matter side slope 8, as shown in figure 1, including a plurality of girder 1 and the side slope stock of encorbelmenting according to the certain interval anchor inside the slope body, girder 1 that encorbelments sets up in the below of side slope stock 3, vertically erects and fixedly connected with yoke 2 on the girder 1 that encorbelments, transversely has laid pavement board 4 on the yoke 2, and girder 1 that encorbelments stretches out fixedly connected with stay cord 5 between the outer one end of slope body and the side slope stock 3. Stay cord 5 one end and the girder 1 of encorbelmenting stretch out the outer one end fixed connection of slope, and the other end need not set up the diagonal bracing in girder 1 below of encorbelmenting with side slope stock 3 fixed connection, and the installation is fixed convenient, can reduce the operation risk. The distance between the overhanging main beams 1 is adjusted according to the positions of the side slope 8 field and the anchor hole of the anchor cable.

In a specific embodiment, overhanging main beams 1 are anchored below each side slope anchor rod 3, a plurality of overhanging main beams 1 are arranged side by side, and a plurality of side slope anchor rods 3 are arranged side by side.

The outer edge of the walkway plate 4 is provided with an assembled guard rail 6. The assembled guard rail 6 is convenient to install, reduces the field construction amount, can be quickly put into use, and is safe and efficient.

The two connection beams 2 are arranged, and the two connection beams 2 are arranged in parallel and are vertically connected to the cantilever main beam 1.

The cantilever girder 1 is welded with a hinge type lock catch 7, and the coupling beam 2 is connected with the cantilever girder 1 through the hinge type lock catch 7. The hinge type lock catch 7 is convenient to install, the workload of on-site welding can be reduced, and the construction efficiency is improved.

The cantilever main beam 1 and the coupling beam 2 are made of section steel, and the pull rope 5 is made of a steel wire rope. The cantilever girder 1 is anchored in a slope body, and the anchoring depth, the anchor hole aperture and the type of the section steel can be adjusted according to the length of the cantilever girder. The utility model discloses a construction platform encorbelments is steel construction platform, economic safety, circulated use, and the high-usage.

When the construction, be provided with the multilayer construction platform of encorbelmenting along 8 domatic slopes on side slope, the certain distance is separated by between the adjacent layer platform, still is connected with the steel ladder between the girder of encorbelmenting of adjacent upper and lower two-layer platform, convenient from top to bottom.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a construction platform that encorbelments that anchor rope was strutted for erect excavation rock matter side slope, a serial communication port, including a plurality of girder and the side slope stock of encorbelmenting according to the certain interval anchor inside the slope, the girder setting of encorbelmenting is in the below of side slope stock, vertically erects and fixedly connected with yoke on the girder of encorbelmenting, transversely has laid the guidance tape on the yoke, and the girder of encorbelmenting stretches out fixedly connected with stay cord between the outer one end of slope and the side slope stock.

2. The anchor-supported cantilever construction platform of claim 1, wherein the outer edge of the walkway plate is provided with a fabricated guard rail.

3. The anchor rope supported cantilever construction platform of claim 1 or 2, wherein two connecting beams are provided, and the two connecting beams are arranged in parallel and vertically connected to the cantilever main beam.

4. The anchor cable supported overhanging construction platform as claimed in claim 3, wherein a hinge type lock catch is welded on the overhanging main beam, and the coupling beam is connected with the main beam through the hinge type lock catch.

5. The anchor cable supported cantilever construction platform of claim 1, wherein the cantilever main beam and the coupling beam are made of steel sections, and the pull rope is made of steel wire rope.