CN218862613U - Tunnel antidetonation protection portal structure - Google Patents

Abstract

The application relates to the field of tunnel engineering, and discloses tunnel antidetonation protection portal structure, and it includes portal headwall, many support post and multiunit stock, many the ground is all buried underground in support post's bottom, the multiunit the stock all anchors on the massif, the multiunit the stock is with many the support post one-to-one sets up, every group the stock all corresponds with self support post fixed connection, portal headwall is reinforced concrete structure, many the support post is all pour in the portal headwall. This application has the shock resistance and the shock resistance who improves tunnel portal, reduces tunnel portal and takes place the possibility of damaging when receiving earthquake or falling rocks impact, improves the effect of portal safety in utilization.

Description

Tunnel antidetonation protection portal structure

Technical Field

The application relates to the field of tunnel engineering, in particular to a tunnel anti-seismic protection portal structure.

Background

The tunnel portal is a supporting structure built by masonry and decorated, is a supporting structure for connecting a portal body and a cutting outside a portal, is positioned on exposed parts at two ends of the tunnel, ensures the safety and stability of the portal and decorates the portal.

End wall formula portal is a common tunnel portal structure, and present end wall formula portal mainly adopts the slabstone concrete to build by laying bricks or stones and forms at present, and constructor erects the template at tunnel portal department at first, and the concrete is filled in to the template after the template is erect and is accomplished to add a certain amount of slabstone in the concrete, treat that the slabstone concrete solidifies the back, demolish the template, can accomplish the construction of portal, realize strutting the tunnel portal.

Aiming at the related technologies, the inventor finds that the tunnel portal built by the stone slab concrete has low strength, and the tunnel portal is easy to damage when an earthquake occurs or the impact of upper falling rocks occurs, so that the defect of low use safety of the tunnel portal exists.

SUMMERY OF THE UTILITY MODEL

In order to alleviate the portal support intensity that the piece stone concrete was built by laying bricks or stones lower, lead to the lower problem of portal safety in utilization, this application provides a tunnel antidetonation protection portal structure.

The application provides a pair of tunnel antidetonation protection portal structure adopts following technical scheme:

the utility model provides a tunnel antidetonation protection portal structure, includes portal headwall, many support post and multiunit stock, many the bottom of support post is all buried underground in ground, the multiunit the stock all anchors on the massif, the multiunit the stock with many the support post one-to-one sets up, every group the stock all corresponds with self support post fixed connection, portal headwall is reinforced concrete structure, many the support post is all pour in the portal headwall.

Through adopting above-mentioned technical scheme, bury many support posts underground subaerial, and with the stock anchor in the massif, it is firm to utilize the stock to take up many support posts, and pour many support posts and hole door headwall as a whole, utilize stock and support post to increase the support intensity of hole door headwall, improve the shock resistance and the shock resistance of tunnel hole door, reduce the possibility that the tunnel hole door takes place the damage when receiving earthquake or falling rocks impact, improve the security that the hole door used.

Preferably, every all be provided with multiunit coupling assembling on the support post, every group the stock all includes many stocks, multiunit coupling assembling with be located same many of a set of the stock one-to-one sets up, every group coupling assembling all includes screw rod, nut and connecting plate, connecting plate fixed connection be in on the stock, the joint groove has been seted up on the connecting plate, the joint groove with screw rod looks adaptation, the screw rod is connected on the support post, the nut with screw rod threaded connection.

Through adopting above-mentioned technical scheme, when constructing tunnel portal, accomplish the back with the stock anchor, then go into the joint groove on the connecting plate with the screw rod card on the support post, then twist the nut again, make the nut support the connecting plate tightly, can realize being connected of stock and support post, improve the convenience that stock and support post are connected.

Preferably, every group coupling assembling still includes the ring that slides, the ring cover that slides is established the outside of support post, the ring that slides with support post sliding connection, the screw rod with the ring fixed connection that slides.

Through adopting above-mentioned technical scheme, with screw rod fixed connection on the slip ring, can adjust the position of screw rod through sliding the slip ring to be convenient for go into the joint inslot on the connecting plate with the screw rod card, reduce because of construction error and lead to the unable card of screw rod to go into the possibility in the joint inslot.

Preferably, a concrete water-blocking layer is poured at the top of the tunnel, the concrete water-blocking layer and the tunnel door end wall are integrally formed, and a drainage channel is formed in the concrete water-blocking layer.

Through adopting above-mentioned technical scheme, set up the concrete water blocking layer at the tunnel top, utilize the concrete water blocking layer to block the rivers that the massif fell down, reduce the volume that oozes under the tunnel top, then can utilize water drainage tank to discharge to massif one side.

Preferably, the underground drainage ditch has been seted up to the underground of tunnel entrance to a cave position, every the equal cavity of support post sets up, every the support post all with underground drainage ditch intercommunication, every fixedly connected with drain pipe on the support post, drain pipe and self fixed connection the support post intercommunication, every the drain pipe is kept away from the support post one end all with the water drainage tank intercommunication.

By adopting the technical scheme, each support upright post is arranged in a hollow mode, rainwater on the mountain can enter the support upright posts through the drainage pipes after being collected into the drainage grooves, then the rainwater is drained into the underground drainage ditch through the support upright posts, and then the rainwater is drained to one side of the mountain; the drainage capacity of the drainage channel is improved, and the possibility that rainwater is gathered in a large amount above the concrete waterproof layer when the rainwater is too large is reduced.

Preferably, each support column is internally and fixedly connected with a plurality of stabilizing rods, and the stabilizing rods support the support columns.

Through adopting above-mentioned technical scheme, all fix many firm poles in every support post inside, utilize many firm poles to support the support post, guarantee the support intensity of support post.

Preferably, a plurality of blocking rods are buried in the concrete waterproof layer and are arranged at intervals in the width direction of the tunnel door.

Through adopting above-mentioned technical scheme, set up many on the concrete water-blocking layer and block the pole, utilize many to block the falling rocks that the pole massif produced and block, reduce the possibility that the falling rocks directly strikes portal headwall.

Preferably, a plurality of connecting buckles are arranged on the portal end wall, each connecting buckle is fixedly connected with a steel cable, the steel cables and the blocking rods are arranged in a one-to-one correspondence mode, and the steel cables are bound on the blocking rods corresponding to the steel cables.

Through adopting above-mentioned technical scheme, bind the cable wire on stopping the pole, draw and carry out stretch-draw with the cable wire to the portal headwall, improve the protective strength of portal headwall to the massif.

In summary, the present application at least includes the following beneficial technical effects:

1. the supporting columns are embedded on the ground, the anchor rods are anchored in the mountain, the anchor rods are used for tensioning and stabilizing the supporting columns, then the supporting columns are poured on the portal end wall, the supporting strength of the portal end wall is increased by the aid of the supporting columns, the shock resistance and the impact resistance of the tunnel portal are improved, the possibility that the tunnel portal is damaged when being impacted by an earthquake or falling rocks is reduced, and the use safety of the tunnel portal is improved;

2. by arranging each support upright post in a hollow mode, rainwater in the drainage groove can enter the support upright posts through the drainage pipes and then is drained into the underground drainage ditch through the support upright posts, and then the rainwater is drained to one side of a mountain body, so that the drainage capacity of the drainage groove is improved;

3. set up many on concrete water-blocking layer and block the pole, utilize many to block the falling rocks that the pole massif produced and block, reduce the possibility that the falling rocks directly strikes portal headwall.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a support column in an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a support column in an embodiment of the present application;

FIG. 4 is a schematic structural view of a connecting assembly in an embodiment of the present application;

fig. 5 is a schematic structural view of a connection port in the embodiment of the present application.

Reference numerals: 100. a tunnel portal end wall; 200. supporting the upright post; 210. a drain pipe; 220. a stabilizing rod; 300. an anchor rod; 400. a connecting assembly; 410. a slip ring; 420. a screw; 430. a nut; 440. a connecting plate; 450. a clamping groove; 500. a concrete water-resistant layer; 510. a water discharge tank; 600. an underground drainage ditch; 700. a blocking lever; 800. a connecting buckle; 810. a steel cord.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses tunnel antidetonation protection portal structure.

Referring to fig. 1 and 2, a tunnel earthquake-resistant protection portal structure includes a portal end wall 100 and a plurality of support columns 200, wherein the bottoms of the support columns 200 are buried in the ground, and the support columns 200 are arranged at intervals along the width direction of the tunnel portal. The portal end wall 100 is located at the end of the tunnel portal, the portal end wall 100 is formed by pouring reinforced concrete, and a plurality of support columns 200 are all poured in the portal end wall 100. The anchor has multiunit stock 300 on the massif of tunnel entrance department, and multiunit stock 300 sets up with many support posts 200 one-to-one, and every stock 300 of group all includes many stock 300, is located the length interval setting of many stock 300 of the same group along its support posts 200 that correspond, and every stock 300 all rather than the support posts 200 fixed connection that correspond. Through many stock 300 of anchor on the massif to bury many support post 200 underground, utilize many stock 300 to many stretch-draw that support post 200, make many stock 300, many support post 200 and entrance to a cave headwall 100 support the tunnel entrance to a cave jointly, improve the support proof strength to tunnel entrance to a cave department, improve the shock resistance and the shock resistance of tunnel entrance to a cave, reduce the tunnel entrance and receive the possibility that takes place the damage when receiving earthquake or rockfall impact.

Referring to fig. 2, 3 and 4, in order to improve the convenience of connecting the anchor rods 300 with the support columns 200, a plurality of groups of connecting assemblies 400 are installed on each support column 200, and the plurality of groups of connecting assemblies 400 located on the same support column 200 are arranged in one-to-one correspondence with the plurality of anchor rods 300 corresponding to the support columns 200.

Each group of connecting assemblies 400 comprises a slip ring 410, the slip ring 410 is matched with the corresponding supporting upright column 200, the slip ring 410 is sleeved on the outer side of the supporting upright column 200, the slip ring 410 is connected with the supporting upright column 200 in a sliding manner, a screw rod 420 is fixedly connected to the slip ring 410, and the screw rod 420 is perpendicular to the length direction of the supporting upright column 200. The screw 420 is connected with a nut 430 through threads, each anchor rod 300 is fixedly connected with a connecting plate 440, each connecting plate 440 is provided with a clamping groove 450, and each clamping groove 450 is matched with the screw 420. In carrying out the work progress to the tunnel portal, accomplish the back with stock 300 and the installation of support post 200, slide ring 410 from top to bottom, make the joint groove 450 of the last screw rod 420 joint of ring 410 that slides on the connecting plate 440 in, then twist nut 430, make nut 430 support connecting plate 440 tightly, can realize stock 300 and support post 200 be connected, improve the convenience of stock 300 and the installation of support post 200, then pour the shaping with portal headwall 100 from the outside of many support posts 200 again can.

Referring to fig. 1 and 2, a concrete water-blocking layer 500 is poured on a mountain body on the top of the tunnel, the concrete water-blocking layer 500 is positioned near the tunnel portal, and the concrete water-blocking layer 500 and the portal end wall 100 are integrally formed. The concrete waterproof layer 500 is provided with a drainage channel 510, the drainage channel 510 is provided along the width direction of the tunnel, and rainwater can be discharged to one side of the mountain from both ends of the drainage channel 510. Utilize concrete water-blocking layer 500 to block the rainwater, make the rainwater can gather in water drainage tank 510, make the rainwater can follow water drainage tank 510 and discharge to massif one side then, be convenient for discharge the rainwater of portal top.

Referring to fig. 2 and 3, each support column 200 is hollow, an underground drainage ditch 600 is formed in the ground, the insides of the support columns 200 are communicated with the underground drainage ditch 600, a drain pipe 210 is fixedly connected to each support column 200, one end of the drain pipe 210 is communicated with the insides of the support columns 200, and the other end of the drain pipe 210 is communicated with a drain groove 510. After the rainwater collects in water drainage tank 510, the rainwater can follow drain pipe 210 and get into inside the support post 200, and then flow into during the underground drainage ditch 600, then discharge to one side of massif through underground drainage ditch 600, improve water drainage tank 510's drainage ability, rainwater when reducing the rainwater too big is in a large amount of the possibility that collects in concrete waterproofing layer 500 top.

Referring to fig. 3, in order to ensure the supporting strength of the supporting upright 200 to the mountain, a plurality of stabilizing rods 220 are fixedly connected in the supporting upright 200, and the plurality of stabilizing rods 220 are arranged at intervals along the length of the supporting upright 200. Utilize firm pole 220 to support stand 200, guarantee support stand 200's support intensity, reduce support stand 200's cavity and set up the influence to self support intensity.

Referring to fig. 1 and 5, a plurality of blocking rods 700 are buried in the concrete waterproof layer 500, the blocking rods 700 are vertically arranged, and the blocking rods 700 are arranged at intervals in the width direction of the tunnel. A plurality of connecting buckles 800 are poured on the tunnel portal end wall 100, the connecting buckles 800 are arranged at intervals along the width direction of the tunnel, and each connecting buckle 800 is fixedly connected with the steel bars in the tunnel portal end wall 100; each connecting buckle 800 is fixedly connected with a steel cable 810, the steel cables 810 correspond to the blocking rods 700 one by one, and one end, far away from the connecting buckle 800, of each steel cable 810 is bound on the corresponding blocking rod 700. The blocking rod 700 is used for blocking falling rocks generated by mountains, so that the possibility that the falling rocks directly impact the tunnel portal end wall 100 is reduced; meanwhile, the steel cable 810 bound on the stop rod 700 is used for tensioning the portal end wall 100, so that the protection strength of the portal end wall 100 to a mountain is improved.

The implementation principle of the tunnel anti-seismic protection tunnel portal structure in the embodiment of the application is as follows: through burying many support posts 200 underground subaerial to many stock 300 of anchor on the massif, install stock 300 and support post 200 together, then pour entrance to a cave headwall 100 in the outside of support post 200 and support stock 300, utilize many support posts 200 and entrance to a cave headwall 100 to support the tunnel entrance to a cave jointly, improve the support proof strength to the tunnel entrance to a cave, improve the shock resistance and the shock resistance of tunnel entrance to a cave, reduce the tunnel entrance to a cave and receive the earthquake or take place the possibility of damaging when falling the stone and assault.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a tunnel antidetonation protection portal structure which characterized in that: including portal headwall (100), many support post (200) and multiunit stock (300), many the bottom of support post (200) is all buried underground in ground, multiunit stock (300) all anchor on the massif, multiunit stock (300) and many support post (200) one-to-one sets up, every group stock (300) all correspond with self support post (200) fixed connection, portal headwall (100) are reinforced concrete structure, many support post (200) are all pour in portal headwall (100).

2. A tunnel earthquake-proof protection tunnel portal structure according to claim 1, wherein: every all be provided with multiunit coupling assembling (400) on support stand (200), every group stock (300) all include many stock (300), multiunit coupling assembling (400) with be located with a set of many stock (300) one-to-one sets up, every group coupling assembling (400) all include screw rod (420), nut (430) and connecting plate (440), connecting plate (440) fixed connection be in on stock (300), joint groove (450) have been seted up on connecting plate (440), joint groove (450) with screw rod (420) looks adaptation, screw rod (420) are connected on support stand (200), nut (430) with screw rod (420) threaded connection.

3. A tunnel earthquake-proof protection tunnel portal structure according to claim 2, wherein: every group coupling assembling (400) still include slip ring (410), slip ring (410) cover is established the outside of support post (200), slip ring (410) with support post (200) sliding connection, screw rod (420) with slip ring (410) fixed connection.

4. A tunnel antidetonation protection portal structure of claim 1 characterized in that: the concrete water-blocking layer (500) is poured at the top of the tunnel, the concrete water-blocking layer (500) and the tunnel door end wall (100) are integrally formed, and a drainage channel (510) is formed in the concrete water-blocking layer (500).

5. A tunnel earthquake-proof protection tunnel portal structure according to claim 4, characterized in that: underground drainage ditch (600), every have been seted up to the underground of tunnel entrance to a cave position support stand (200) equal cavity setting, every support stand (200) all with underground drainage ditch (600) intercommunication, every fixedly connected with drain pipe (210) on support stand (200), drain pipe (210) and self fixed connection support stand (200) intercommunication, drain pipe (210) are kept away from the one end of support stand (200) all with water drainage tank (510) intercommunication.

6. A tunnel antidetonation protection portal structure of claim 5 characterized in that: every the inside many firm poles (220) of equal fixedly connected with of support post (200), many firm pole (220) are right support post (200) support.

7. A tunnel earthquake-proof protection tunnel portal structure according to claim 4, characterized in that: a plurality of blocking rods (700) are buried in the concrete waterproof layer (500), and the blocking rods (700) are arranged at intervals in the width direction of the tunnel door.

8. A tunnel earthquake-proof protection tunnel portal structure according to claim 7, characterized in that: the tunnel portal end wall (100) is provided with a plurality of connecting buckles (800), each connecting buckle (800) is fixedly connected with a steel cable (810), the steel cables (810) and the blocking rods (700) are arranged in a one-to-one correspondence mode, and the steel cables (810) are bound on the blocking rods (700) corresponding to the steel cables (810).

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