CN205152917U - Hydraulic tunnel concrete lining section and steel pipe linkage segment structure - Google Patents

Abstract

The utility model discloses a hydraulic tunnel concrete lining section and steel pipe linkage segment structure, including the concrete lining section and stretch into the steel pipe in the concrete lining section, inboard longitudinal reinforcement and outside longitudinal reinforcement have been arranged respectively in the concrete lining section, the steel pipe outside is provided with anchor bar ring and stiffening ring respectively, steel pipe upper reaches concrete lining section is provided with the hoop reinforcing bar, the water-blocking ring has been arranged with the within range of steel pipe handing-over in the concrete lining section, concrete lining section end sets up the copper sheet stagnant water, outside longitudinal reinforcement prolongs to concrete lining section end, and inboard longitudinal reinforcement cuts to anchor bar ring department to weld at inboard longitudinal reinforcement and anchor bar ring contact site. According to the utility model discloses set up concrete lining section and steel pipe linkage segment structure, can make concrete lining section and steel pipe section be connected and become the better structure of wholeness, avoid because of the easy impaired problem in infiltration and the structure operation back that the structure separation leads to.

Description

A hydraulic tunnel concrete lining section and steel pipe connection section structure

technical field

The utility model belongs to the technical field of water diversion in water conservancy and hydropower projects, in particular to a structure for connecting a concrete lining section and a steel pipe of a hydraulic tunnel.

Background technique

In water conservancy and hydropower projects, hydraulic tunnels occupy a very important position as water delivery structures. Especially in diversion-type hydropower stations, the construction of hydraulic tunnels has a controlling influence on the overall construction period and cost of the power station. In the construction of traditional hydraulic tunnels, the connection between the concrete lining section and the steel pipe section is often due to structural separation and poor structural integrity, which leads to serious water seepage at the joint after operation, the overall structure is easily damaged, and the difficulty of maintenance after structural damage increases. Large, additional engineering costs will be added.

Utility model content

In order to solve the above problems, the utility model provides a hydraulic tunnel concrete lining section and steel pipe connecting section structure. This structure solves the problem that in the construction of traditional hydraulic tunnels, the connection between the concrete lining section and the steel pipe section is structurally separated, and the structural integrity is poor. After operation, the connection is severely seeped, the overall structure is easily damaged, and the difficulty of maintenance after the structure is damaged increases. , to increase the problem of additional engineering costs.

The utility model is realized through the following technical solutions.

A hydraulic tunnel concrete lining section and steel pipe connection section structure, including a concrete lining section and a steel pipe extending into the concrete lining section, the inner longitudinal reinforcement and the outer longitudinal reinforcement are respectively arranged in the concrete lining section, and the outer sides of the steel pipes are respectively An anchor bar ring and a stiffening ring are provided, and the concrete lining section upstream of the steel pipe is provided with hoop steel bars.

A water blocking ring is arranged in the range where the concrete lining section and the steel pipe meet.

Copper sheets are installed at the end of the concrete lining section to stop water.

The outer longitudinal reinforcement extends to the end of the concrete lining section, the inner longitudinal reinforcement ends at the anchor ring, and welding is performed at the contact position between the inner longitudinal reinforcement and the anchor ring.

The beneficial effects of the utility model are:

Compared with the prior art, according to the utility model, the structure of the connection section between the concrete lining section and the steel pipe section is set, which can make the connection of the concrete lining section and the steel pipe section into a structure with better integrity, and avoid water seepage and structural failure caused by structural separation. vulnerable to damage.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the A-A direction view of Fig. 1;

Fig. 3 is the schematic diagram of the connection and fixation between the anchor rib ring and the steel pipe in the utility model;

Figure 4 is a schematic diagram of the connection and fixation of the water blocking ring and the steel pipe in the utility model;

Fig. 5 is a schematic diagram of the connection and fixation of the stiffening ring and the steel pipe in the utility model.

In the figure: 1-concrete lining section, 2-inner longitudinal steel bar, 3-circular steel bar, 4-anchor bar ring, 5-water blocking ring, 6-copper water stop, 7-stiffening ring, 8-steel pipe, 9 - Outer longitudinal reinforcement.

detailed description

The technical solution of the utility model is further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.

As shown in Figures 1 to 5, a hydraulic tunnel concrete lining section and steel pipe connection section structure according to the utility model includes a concrete lining section 1 and a steel pipe 8 extending into the concrete lining section 1, the concrete lining section The inner longitudinal reinforcement 2 and the outer longitudinal reinforcement 9 are respectively arranged in the section 1, the anchor ring 4 and the stiffening ring 7 are arranged on the outer side of the steel pipe 8, and the concrete lining section 1 is provided with a circumferential reinforcement 3. In practical application, the anchor ring 4 and the stiffening ring 7 are respectively fixed on the outside of the steel pipe 8 by means of welding. It acts as a reinforcement support to the steel pipe 8 . The anchor bar ring 4 is arranged at a position about 1/4 away from the nozzle of the steel pipe 8, and while reinforcing the steel pipe 8, the steel pipe 8 is better combined with the concrete lining section 1.

A water blocking ring 5 is arranged in the range where the concrete lining section 1 and the steel pipe 8 meet. In actual adaptation, at least two water blocking rings 5 are welded to the outside of the steel pipe 8 . The height of the water blocking ring 5 is 1/2 of the lining thickness of the concrete lining section 1, and the setting of the water blocking ring 5 prolongs the seepage diameter of the concrete lining section 1, effectively avoiding water seepage caused by structural separation.

The end of the concrete lining section 1 is provided with a copper water stop 6 . There is a construction joint at the position of the copper sheet water stop 6 at the end of the concrete lining section 1, and the setting of the copper sheet water stop 6 further plays a role of water blocking, preventing the internal water seepage of the concrete lining section 1 and the steel pipe 8.

The outer longitudinal reinforcement 9 is extended to the end of the concrete lining section 1, the inner longitudinal reinforcement 2 ends at the anchor ring 4, and welding is performed at the contact position between the inner longitudinal reinforcement 2 and the anchor ring 4.

Below in conjunction with accompanying drawing, the implementation process of the present utility model is further described.

As shown in Figure 1 and Figure 2, during construction, the following steps are mainly implemented:

(1) When installing the steel pipe 8 pipe joints, extend a pipe joint into the concrete lining section 1;

(2) Extend the outer longitudinal reinforcement 9 to the end of the concrete lining section 1, the inner longitudinal reinforcement 2 ends at the anchor ring 4, and weld the inner longitudinal reinforcement 2 and the anchor ring 4 in contact;

(3) Stop the hoop steel bar 3 to the connection position between the concrete lining section 1 and the steel pipe 8;

(4) In the range where the concrete lining section 1 and the steel pipe 8 are handed over, a water blocking ring 5 is arranged, and a copper water stop 6 is arranged at the end of the concrete lining section 1 .

(5) The anchor bar ring 4 , the water blocking ring 5 and the stiffening ring 7 are respectively welded to the outside of the steel pipe 8 .

Claims (4)

1. a hydraulic tunnel concrete lining section and fastener for connection segment structure, it is characterized in that: comprise concrete lining section (1) and stretch into the steel pipe (8) in concrete lining section (1), inner side longitudinal reinforcement (2) and outside longitudinal reinforcement (9) is furnished with respectively in described concrete lining section (1), described steel pipe (8) outside is respectively arranged with dowel ring (4) and stiffening ring (7), and described steel pipe (8) upstream concrete lining section (1) is provided with circumferential reinforcement (3).

2. a kind of hydraulic tunnel concrete lining section according to claim 1 and fastener for connection segment structure, is characterized in that: be furnished with water-ring (5) in the scope that described concrete lining section (1) and steel pipe (8) join.

3. a kind of hydraulic tunnel concrete lining section according to claim 1 and fastener for connection segment structure, is characterized in that: described concrete lining section (1) end arranges copper sheet sealing (6).

4. a kind of hydraulic tunnel concrete lining section according to claim 1 and fastener for connection segment structure, it is characterized in that: described outside longitudinal reinforcement (9) extends to concrete lining section (1) end, inner side longitudinal reinforcement (2) by arriving dowel ring (4) place, and is welded with dowel ring (4) contact site at inner side longitudinal reinforcement (2).