CN217151961U - Tunnel anchor non-floor type two-lining support system - Google Patents

Abstract

The utility model relates to a non-floor type two-lining support system for tunnel anchors, which is characterized in that it comprises: a plurality of straight-line section steels and a plurality of arc section section steels, and the circular arc section section steels are detachably installed on a corresponding set of straight lines The top of the section steel, wherein one end of the arc section section steel is connected with a straight section section steel, the other end of the arc section section section steel is connected with another straight section section steel, and the arc section section steel is used to support the top of the tunnel anchor; many Arc segment bracket, the arc segment bracket is supported on the corresponding arc segment steel, and the arc segment bracket is detachably connected with a corresponding group of straight segment steel, so it can effectively solve the construction difficulty at the corner of the tunnel anchor This is a big problem, and the construction of the above-mentioned two-lining support system is simple. Compared with the full-house support and the customized steel form, the two-lining support system uses less steel, the cost of materials used in construction is low, and the construction period is short.

Description

A tunnel anchor non-floor type two-liner support system

technical field

The utility model relates to the technical field of bridge construction, in particular to a non-floor type two-lining support system for tunnel anchors.

Background technique

With the development of long-span bridges, suspension bridges are widely built on large rivers. Suspension bridges, also known as suspension bridges, refer to bridges that use main cables and suspension cables as a suspension system for stiffening beams to transfer loads to pylons and anchorages. According to the anchoring form of the main cable, it is divided into ground-anchored suspension bridges and self-anchored suspension bridges. At present, most suspension bridges use ground-anchored anchoring main cables, that is, the main cables pass the gravity anchors or rock tunnel anchors. The tensile force of the bridge is transmitted to the ground to achieve the force balance of the whole bridge, which is the best force mode of the long-span suspension bridge.

Tunnel anchors have the advantages of low cost and little impact on the environment, so they are more and more widely used. The front anchor room usually adopts composite lining. After the initial support is completed, a waterproof layer is laid and a secondary lining is constructed. Since the main cable passing section of the tunnel anchor and the front anchor room may have a horizontal included angle of the axis, if the two-lined trolley commonly used in tunnel construction is used, the conversion of construction procedures will be inconvenient, and the construction at the corner of the saddle room will be difficult, and the construction machinery will be difficult. The problem of high equipment investment; if the second lining is constructed with full-floor brackets and customized steel molds, there are problems such as large amount of steel used for brackets, high price of customized steel molds, long construction period and large investment.

Utility model content

The embodiment of the present utility model provides a non-floor-type secondary lining support system for tunnel anchors, so as to solve the difficulty of construction at the corner of the tunnel anchor in the related art, and the investment in construction machinery and equipment is relatively high. For steel molds, there are problems such as large amount of steel used for brackets, high price of customized steel molds, long construction period and large investment.

A first aspect provides a tunnel anchor non-floor type two-lining support system, characterized in that it includes: a plurality of straight-line section steels, the straight-line section steels are used to be vertically arranged in the tunnel anchor, wherein the two The straight-line section steel is a group, and the two straight-line section steels in the same group are located on opposite sides of the axis of the tunnel anchor respectively; a plurality of circular arc section steels are detachably installed in the corresponding The top of a group of the straight section steel, wherein one end of the arc section section steel is connected with one of the straight section section steel, and the other end of the circular arc section section steel is connected with another straight section section steel , the arc section steel is used to support the top of the tunnel anchor; a plurality of arc section brackets, the arc section brackets are supported on the corresponding arc section section steel, and the arc section brackets correspond to A set of detachable connections for the straight section steel.

In some embodiments, the two-liner support system further includes: a plurality of steel pipe supports, the steel pipe supports are arranged between the corresponding two straight section steels, and the steel pipe supports are located in the corresponding arc segments. below the bracket.

In some embodiments, the steel pipe bracket includes: a plurality of horizontal rods, which are arranged at intervals in the vertical direction; a plurality of vertical rods, which are arranged at intervals in the horizontal direction, and the vertical The rods respectively intersect with a plurality of the horizontal rods, and the vertical rods and the horizontal rods are fixed by fasteners.

In some embodiments, a first connecting plate is fixed on the end surface of the circular arc section steel, the first connecting plate is located on the horizontal plane where the center of the circular arc section steel is located, and a second connecting plate is fixed on the top of the straight section steel. A connecting plate, wherein the first connecting plate is attached to the second connecting plate, and the first connecting plate and the second connecting plate are fixed by bolts.

In some embodiments, the arc-segment bracket includes: a horizontal support rod, two ends of the horizontal support rod are respectively connected with the two straight section steels, and the ends of the horizontal support rod are located in the straight section. The section steel is connected to the arc section section steel; two oblique support rods, one end of the oblique support rod is connected to the arc section section steel, and the other end of the oblique support rod is connected to the horizontal support rod and the two diagonal support rods are symmetrical about the vertical bisector of the horizontal support rod.

In some embodiments, the arc-shaped section steel includes: three arc-shaped section-shaped steels, the three arc-shaped section-shaped steels are connected in sequence, and the connection between the adjacent two arc-shaped section-shaped steels is connected to the diagonal support rod. one end is fixed.

In some embodiments, the two-liner support system further includes: a plurality of longitudinal tie rods, and the longitudinal tie rods connect two adjacent straight section steels along the length direction of the tunnel anchor.

In some embodiments, a support plate is fixed on the bottom of the straight section steel, and the support plate is used to fit with the ground.

In some embodiments, the bottom of the straight section steel is provided with a foot-locking steel bar, the foot-locking steel bar is inserted into the support plate, and the foot-locking steel bar is used to protrude into the ground.

In some embodiments, the two-lining support system further includes: a plurality of combined steel molds, and the multiple combined steel molds are laid on the outer contours of the straight section steel and the arc section steel.

The beneficial effects brought by the technical solution provided by the utility model include:

The embodiment of the present invention provides a non-floor type two-lining support system for tunnel anchors. Since a plurality of straight section steels can be arranged at intervals along the length direction of the tunnel anchor, the circular arc section steels can be arranged on the top of the corresponding straight section steels , the arc section bracket can be supported below the corresponding arc section section steel, and the arc section bracket can be connected with the corresponding straight section section steel. At the corner of the tunnel anchor, the straight section section steel can be erected along the bending direction of the tunnel anchor. , and the arc section section steel is installed on the straight section section steel to form a two-lining support system, therefore, it can effectively solve the problem of difficult construction at the corner of the tunnel anchor, and the above-mentioned two-lining support system The erection of the support system is simple, compared with Due to the use of full-house brackets and customized steel molds, the two-lined bracket system uses less steel, low cost of materials used in construction, and short construction period.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic structural diagram of a tunnel anchor non-floor type two-liner support system provided by an embodiment of the present invention;

2 is a schematic diagram of the connection structure of the straight section section steel and the arc section section steel provided by the embodiment of the present utility model;

3 is a schematic diagram of the connection structure of two adjacent straight-line section steel profiles provided by an embodiment of the present utility model;

FIG. 4 is a schematic structural diagram of another tunnel anchor non-floor type two-lining support system provided by an embodiment of the present invention.

In the picture:

1. Straight section steel; 11. Support plate; 2. Arc section section steel; 21. Arc section section steel; 3. Arc section bracket; 31. Horizontal support rod; 32. Oblique support rod; 4. Steel pipe bracket; 41 5. The first connecting plate; 6. The second connecting plate; 7. The bolt; 8. The longitudinal tie rod; 9. The combined steel mold.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments of the present invention are some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The embodiment of the present utility model provides a non-floor-type secondary lining support system for tunnel anchors, which can solve the difficulty of construction at the corner of the tunnel anchor in the related art, and the investment in construction machinery and equipment is relatively high. Compared with customized steel molds, there are problems such as large amount of steel used for brackets, high price of customized steel molds, long construction period and large investment.

Referring to FIG. 1 , a non-floor-type two-liner support system for tunnel anchors provided by an embodiment of the present utility model may include: a plurality of straight section steels 1, and the plurality of straight section steels 1 can be along the length of the tunnel anchor The direction of laying, at the corner of the tunnel anchor, a plurality of straight section steels 1 can be arranged along the corner direction of the tunnel anchor, and the straight section steel 1 can be vertically arranged in the tunnel anchor, wherein, two straight section steels 1 can be used as one The two straight-line section steels 1 in the same group can be located on opposite sides of the axis of the tunnel anchor respectively; a plurality of arc-section steels 2, each of which can be detachably installed on a corresponding group of straight-line section steels 1, in which one end of the arc section steel 2 can be detachably connected to the top of a straight section section steel 1, and the other end of the arc section section steel 2 can be detachably connected to another straight section section steel 1. And the arc segment steel 2 can be supported on the top of the tunnel anchor, and the arc segment steel 2 can meet the linear requirements of the arc segment of the tunnel anchor vault; a plurality of arc segment brackets 3, and the arc segment bracket 3 can be supported on the corresponding The arc segment steel 2, and the arc segment bracket 3 can be connected with a corresponding group of straight segment steel 1. In this embodiment, one side of the arc segment bracket 3 can be connected with the top of a straight segment steel 1. The other side of the arc bracket 3 can be connected with the top of another straight section steel 1. The straight section section steel 1, the arc section section steel 2 and the arc section bracket 3 are closed into a ring according to the principle of New Austrian method to ensure safety and stability , At the corner of the tunnel anchor, the straight section steel 1 can be laid along the turning direction of the tunnel anchor. At the same time, the tunnel anchor is trumpet-shaped, the opening of the tunnel anchor is small, and the section of the tunnel anchor gradually increases along the direction of the tunnel body. It would be very inconvenient to use the two-liner trolley commonly used in tunnel construction for the construction of the anchor. The above-mentioned two-liner support system can be customized according to the cross-sectional size of the tunnel anchor. The cross-sectional size of the tunnel anchor varies. Therefore, the above-mentioned two-lining support system can solve the problem of inconvenience caused by the gradual increase of the cross-sectional size of the tunnel anchor, and can effectively solve the problem of the two-lining trolley commonly used in tunnel construction. At the same time, the construction of the above-mentioned two-lining support system is simple. Compared with the full-house support and the customized steel form, the two-lining support system uses less steel, and the cost of materials used in construction is low. The construction period is short.

Referring to FIG. 1 , in some embodiments, the two-liner support system may further include: a plurality of steel pipe supports 4 , and each steel pipe support 4 may be disposed at the installation position of each group of straight section steels 1 , that is, the steel pipe support 4 may It is arranged between the corresponding two straight section steels 1, and the steel pipe bracket 4 can be located below the corresponding arc section bracket 3. One side of the steel pipe bracket 4 can be connected with a straight section steel 1, and the other side of the steel pipe bracket 4 can be connected. One side can be connected with another straight section steel 1, which can further enhance the stability of the two-liner bracket system.

Referring to FIG. 1 , in some embodiments, the steel pipe bracket 4 may include: a plurality of transverse rods 41 , and the plurality of transverse rods 41 may be arranged between the two straight section steels 1 along a vertical interval, and the transverse rods 41 One end can be connected with a straight section steel 1, and the other end of the horizontal rod 41 can be connected with another straight section steel 1; a plurality of vertical rods 42, a plurality of vertical rods 42 can be arranged at intervals along the lateral, and vertical The straight rods 42 can respectively intersect with a plurality of horizontal rods 41 in turn, and the intersection of the vertical rods 42 and the horizontal rods 41 can be provided with fasteners, and the fasteners can fix the vertical rods 42 and the horizontal rods 41, and can also be based on the actual situation on site. Setting the scissor brace on the steel pipe bracket 4 can increase the structural strength of the steel pipe support 4 .

Referring to FIGS. 1 and 2 , in some embodiments, a first connecting plate 5 may be fixed on the end surface of the arc-segment steel 2 . End face, in other embodiments, the first connecting plate 5 can be fixed on the end face of the arc segment steel 2 by using fasteners, the first connecting plate 5 can be in the horizontal plane where the center of the arc segment steel 2 is located, and the straight line segment steel 1 The top can be fixed with a second connecting plate 6, wherein the first connecting plate 5 can be attached to the second connecting plate 6, and the first connecting plate 5 and the second connecting plate 6 can be fixed by bolts 7, which can be easily assembled and disassembled Two-liner bracket system.

Referring to FIG. 1 , in some embodiments, the arc-segment bracket 3 may include: a horizontal support rod 31 , two ends of the horizontal support rod 31 may be respectively connected with two straight section steels 1 , and the The section can be located at the junction of the straight section section steel 1 and the arc section section steel 2. In this embodiment, both ends of the horizontal support rod 31 can be detachably connected to the straight section section steel 1 through bolts 7; Rod 32, one end of the oblique support rod 32 can be detachably connected with the arc segment steel 2, the other end of the oblique support rod 32 can be connected to the midpoint position of the horizontal support rod 31, and the two oblique support rods 32 can be related to the horizontal The vertical bisector of the support rod 31 is symmetrical, and the horizontal support rod 31 can be closed with the arc segment steel 2 into a ring to form a stable annular structure, the oblique support rod 32 can be supported under the arc segment bracket 3, and the oblique support rod 32 Being located in the annular structure can further increase the stability of the annular structure, so that the supporting effect of the arc segment bracket 3 is better.

Referring to FIG. 1 , in some embodiments, the arc segment bracket 3 may further include: a U-shaped plate, the U-shaped plate may be arranged at the center of the arc segment steel 2 , and the opening of the U-shaped plate may be oriented toward the vicinity of the circle In the direction of the arc section steel 2, the wall of the U-shaped plate can be provided with a plurality of first installation holes, the horizontal support rod 31 can include two long straight rods, and one end of the long straight rods is provided with a plurality of second installation holes, the long The straight rod can be inserted into the U-shaped plate in the horizontal direction, and the long straight rod can be detachably installed on the U-shaped plate through the first installation hole and the second installation hole through the bolt 7, and one end of the diagonal support rod 32 A third installation hole can be provided, and the inclined support rod 32 can be inserted into the U-shaped plate obliquely. Similarly, the inclined support rod 32 can be detachably installed in the U-shaped plate through the bolt 7 through the first installation hole and the third installation hole. On the board, the ends of the horizontal support rod 31 and the oblique support rod 32 can be centrally installed in one place through the U-shaped plate, which can be easily installed and disassembled.

Referring to FIG. 1 , in some embodiments, the circular arc section steel 2 may include: three arc section sections 21 , the radians of the three arc section sections 21 may be equal, and the arc section steel 21 may be 60° The three arc-shaped section steels 21 can be connected end to end in turn. In this embodiment, the connection method of the two adjacent arc-shaped section steels 21 is also to fix the connecting plate on the end face of the arc-shaped section steel 21, and then pass the The bolts 7 can detachably install the two adjacent connecting plates together. In other embodiments, the two adjacent arc-shaped section steels 21 can be connected in other ways. The connection between the two adjacent arc-shaped section steels 21 is It can be fixed with one end of the oblique support rod 32, and the arc section section steel 2 is divided into three arc section section steel 21, which can be easily processed and manufactured, and can be easily controlled during processing to meet the linear requirements of the arc section of the tunnel anchor. .

Referring to FIG. 3 , in some embodiments, the two-liner support system may further include: a plurality of longitudinal tie rods 8 , the longitudinal tie rods 8 may be arranged in the tunnel anchor along the length direction of the tunnel anchor, and the longitudinal tie rods 8 may be connected along the Two or three longitudinal tie rods 8 can be arranged between the two adjacent straight section steels 1 in the length direction of the tunnel anchor, and the structure of the secondary lining support system can be further increased by setting the longitudinal tie rods 8 strength.

Referring to FIG. 1 , in some embodiments, the bottom of the straight section steel 1 may be provided with a support plate 11 , the shape of the support plate 11 is square, the support plate 11 is welded to the bottom of the straight section steel 1 , and the support plate 11 may be The ground fit can increase the contact area between the straight section steel 1 and the ground, and increase the support capacity of the straight section steel 1 .

In some embodiments, the bottom of the straight section steel 1 can also be provided with a foot-locking steel bar, the foot-locking steel bar can be inserted into the support plate 11 , and the foot-locking steel bar can extend into the ground to temporarily fix the support plate 11 on the ground. Ensure that the support structure of the straight section steel 1 is stable and prevent the straight section steel 1 from tipping.

Referring to FIG. 4 , in some embodiments, the two-liner support system may further include: a plurality of combined steel molds 9 , and the multiple combined steel molds 9 may be laid on the outer contours of the straight section steel 1 and the arc section steel 2 , the multiple composite steel molds 9 can form a template for pouring concrete, and the concrete can be poured on the multiple combined steel molds 9 to form a secondary lining.

The principle of a tunnel anchor non-floor type two-liner support system provided by the embodiment of the present utility model is as follows:

Since a plurality of straight section steels 1 can be laid along the length direction of the tunnel anchor, the plurality of straight section steels 1 can be arranged along the corner direction of the tunnel anchor at the corners of the tunnel anchor, and the straight section steels 1 can be arranged vertically to the tunnel anchor. Among them, two straight section steels 1 can be used as a group, two straight section steels 1 in the same group can be located on opposite sides of the axis of the tunnel anchor, and each arc section steel 2 can be detached and installed in the corresponding The top of a group of straight section steel 1, and the arc section section steel 2 can be supported on the top of the tunnel anchor, the arc section section steel 2 can meet the linear requirements of the arc section of the tunnel anchor vault, and the arc section bracket 3 can be supported on Corresponding arc segment section steel 2, and arc section bracket 3 can be connected with a corresponding group of straight section section steel 1. The straight section section steel 1, the arc section section steel 2 and the arc section bracket 3 are closed according to the principle of the new Austrian method. At the corner of the tunnel anchor, the straight-line section steel 1 can be laid along the corner of the tunnel anchor, so it can effectively solve the problem of difficulty in construction at the corner of the tunnel anchor, and the above-mentioned two-liner support system Compared with the use of full-house supports and customized steel molds, the two-lined support system uses less steel, the cost of materials used in construction is low, and the construction period is short.

Since the tunnel anchor is trumpet-shaped, the opening of the tunnel anchor is small, and the section of the tunnel anchor gradually increases along the direction of the tunnel body. The system can customize the straight section steel 1 and the arc section section steel 2 according to the section size of the tunnel anchor, so as to adapt to the changing section size of the tunnel anchor. The problem of inconvenience to use the double-lined trolley commonly used in tunnel construction due to the increase in size.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the It is described, rather than indicated or implied, that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

It should be noted that in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or Any such actual relationship or order between these entities or operations is implied. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The above are only specific embodiments of the present invention, so that those skilled in the art can understand or realize the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A tunnel anchor non-floor type two-lining support system is characterized by comprising:

the tunnel anchor comprises a plurality of straight section steel (1), wherein the straight section steel (1) is vertically arranged in the tunnel anchor, two straight section steel (1) in one group are respectively positioned at two opposite sides of the axis of the tunnel anchor;

a plurality of arc section steel sections (2), the arc section steel sections (2) are detachably arranged on the tops of the corresponding group of straight section steel sections (1), wherein,

one end of the circular arc section steel (2) is connected with one straight section steel (1), the other end of the circular arc section steel (2) is connected with the other straight section steel (1), and the circular arc section steel (2) is used for supporting the top of the tunnel anchor;

a plurality of circular arc section supports (3), circular arc section support (3) support in corresponding circular arc section shaped steel (2), just circular arc section support (3) and a set of that corresponds straightway shaped steel (1) detachable connects.

2. The non-floor standing two-liner bracket system for a tunnel anchor of claim 1, further comprising:

the steel pipe support is characterized by comprising a plurality of steel pipe supports (4), wherein the steel pipe supports (4) are arranged between the two corresponding straight section steel sections (1), and the steel pipe supports (4) are located below the corresponding circular arc section supports (3).

3. The non-floor standing double-lined support system for tunnel anchors according to claim 2, wherein the steel pipe support (4) comprises:

the transverse straight rods (41) are arranged at intervals along the vertical direction;

the vertical rods (42) are arranged at intervals along the transverse direction, the vertical rods (42) are intersected with the transverse rods (41) respectively, and the vertical rods (42) and the transverse rods (41) are fixed through fasteners.

4. The non-floor standing two-lined support system for a tunnel anchor of claim 1, wherein:

the end surface of the circular arc section steel (2) is fixedly provided with a first connecting plate (5), the first connecting plate (5) is positioned on the horizontal plane where the circle center of the circular arc section steel (2) is positioned, the top of the straight section steel (1) is fixedly provided with a second connecting plate (6), wherein,

the first connecting plate (5) is attached to the second connecting plate (6), and the first connecting plate (5) and the second connecting plate (6) are fixed through bolts (7).

5. The non-floor standing double-lined support system for tunnel anchors according to claim 1, wherein the circular arc segment support (3) comprises:

the two ends of the horizontal support rod (31) are respectively connected with the two straight section steel sections (1), and the end part of the horizontal support rod (31) is positioned at the joint of the straight section steel sections (1) and the circular arc section steel sections (2);

two bracing diagonal rods (32), the one end of bracing diagonal rod (32) with circular arc section shaped steel (2) are connected, the other end of bracing diagonal rod (32) connect in the mid point position of horizontal support pole (31), and two bracing diagonal rod (32) about the perpendicular bisector symmetry of horizontal support pole (31).

6. The non-floor-standing double-lined support system for a tunnel anchor according to claim 5, wherein the circular-arc-section steel section (2) comprises:

three segmental arc shaped steel (21), it is three segmental arc shaped steel (21) connect gradually, adjacent two segmental arc shaped steel (21) junction with the one end of bearing diagonal pole (32) is fixed.

7. A tunnel anchor non-floor standing two-liner bracket system as recited in claim 1, further comprising:

and the longitudinal pull rods (8) are connected with two adjacent straight section steel sections (1) along the length direction of the tunnel anchor through the longitudinal pull rods (8).

8. The non-floor standing two-lined support system for a tunnel anchor of claim 1, wherein:

the bottom of the straight-line section steel (1) is fixedly provided with a supporting plate (11), and the supporting plate (11) is used for being attached to the ground.

9. The non-floor standing two-lined support system for a tunnel anchor of claim 8, wherein:

the bottom of the straight section steel (1) is provided with a locking steel bar, the locking steel bar is inserted into the supporting plate (11), and the locking steel bar is used for extending into the ground.

10. The non-floor standing two-liner bracket system for a tunnel anchor of claim 1, further comprising:

the combined steel moulds (9) are paved on the outer contours of the straight section steel (1) and the circular arc section steel (2).

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