CN111322094A - A built-in combined waterproof joint with an inflatable airbag and an application method thereof - Google Patents

Abstract

The invention relates to the technical field of tunnel engineering, in particular to a built-in combined waterproof joint with an inflatable air bag and an application method thereof, wherein the built-in combined waterproof joint is arranged at the position of a tunnel joint and comprises a UHPC bracket, a bracket end face steel structure, the inflatable air bag and a built-in OMEGA water stop; two sides of a tunnel joint are respectively provided with a UHPC bracket, the end surfaces of the opposite sides of the UHPC bracket are respectively provided with a bracket end surface steel structure, the end surfaces of the opposite sides of the bracket end surface steel structures of the two sides are respectively provided with a chargeable air bag, and two ends of the built-in OMEGA water stop are respectively connected to the bracket end surface steel structures of the two sides and are positioned on the inner side of the chargeable air bag along the longitudinal section direction of the tunnel. The invention has the advantages that: the repair of the tunnel joint after the failure of the existing water-stopping structure can be completed by utilizing the vacant limit of the original building on the premise of not influencing the building function of the tunnel, so that the occupied space is extremely small, and the application range is wide; the water stopping effect is good, and water seepage and water leakage at the position of the tunnel joint can be completely avoided.

Description

A built-in combined waterproof joint with an inflatable airbag and an application method thereof

technical field

The invention relates to the technical field of tunnel engineering, in particular to a built-in combined waterproof joint with an inflatable airbag and an application method thereof.

Background technique

The joints of newly built immersed tunnels generally use external GINA waterstops and built-in OMEGA waterstops for two waterproof measures. The OMEGA waterstops are generally used as the second line of defense. , the OMEGA water stop can be replaced at any time to ensure the reliability of the water stop of the pipe joints. However, when the external GINA water stop is greatly damaged, the built-in OMEGA water stop plays a major waterproof role and cannot be replaced. There is no precedent for restoration at home and abroad.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a built-in combined waterproof joint with an inflatable airbag and an application method thereof according to the above-mentioned deficiencies of the prior art. The structural design of the built-in OMEGA water stop realizes the non-destructive repair of the water stop function of the tunnel joints.

The realization of the object of the present invention is accomplished by the following technical solutions:

A built-in combined waterproof joint with an inflatable airbag is characterized in that: the built-in combined waterproof joint is arranged at the position of the tunnel joint, including UHPC corbel, corbel end surface steel structure, refillable airbag, and built-in OMEGA waterstop ; The UHPC corbels are respectively provided on both sides of the tunnel joint position, and the corbel end surface steel structures are respectively provided on the opposite side end faces of the UHPC corbels, and the corbel end surface steel structures on both sides are respectively provided. The inflatable airbags are respectively provided on the opposite side end faces of the inflatable airbags, and the two ends of the built-in OMEGA waterstop are respectively connected to the steel structures of the corbel end surfaces on both sides and are located at the inflatable airbags along the tunnel. Inside of the profile direction.

The inflatable airbag expands and expands under the action of inflation and is pressed against the inflatable airbag on the other side; one of the two inflatable airbags is used and the other is prepared.

The UHPC corbel is provided with a water-swellable water-stop glue and a pre-buried grouting pipe to achieve water-stop between it and the main structure of the tunnel.

The UHPC corbel and the main structure of the tunnel are connected and fixed by planting bars.

An application method involving the above-mentioned built-in combined waterproof joint with an inflatable airbag, characterized in that: the built-in combined waterproof joint is applied to the water-stop repair after the failure of the existing water-stop structure at the tunnel joint; The inflatable airbag in the built-in combined waterproof joint is used as a temporary water stop; the built-in OMEGA water stop in the built-in combined waterproof joint is used as a permanent water stop.

When the built-in OMEGA waterstop fails and needs to be replaced, one of the inflatable airbags is inflated as a temporary waterstop measure for repairing the built-in OMEGA waterstop.

After the built-in OMEGA waterstop is installed as a permanent waterstop, the inflatable airbag is in a deflated state.

The advantages of the invention are: on the premise of not affecting the function of the tunnel building, the repair of the existing water-stop structure of the tunnel joint after failure can be completed by using the vacant boundary of the original building, the space occupied is extremely small, and the application range is wide; the water-stop effect It can completely avoid water seepage and water leakage at the location of the tunnel joint; the waterproof joint has a simple and reasonable structure and strong repairability, which is convenient for later maintenance and suitable for promotion.

Description of drawings

FIG. 1 is a schematic diagram of the installation structure of the present invention.

Detailed ways

Below in conjunction with the accompanying drawings, the features of the present invention and other related features will be described in further detail by embodiments, so as to facilitate the understanding of those skilled in the same industry:

As shown in Figure 1, the marks 1-12 in the figure are respectively: tunnel pipe section 1, tunnel pipe section 2, existing OMEGA waterstop 3, existing GINA rubber waterstop 4, end steel shell 5, UHPC cow Leg 6, corbel end face steel structure 7, refillable air bag 8, built-in OMEGA waterstop 9, planting bar 10, water-expandable water-stop glue 11, pre-buried grouting pipe 12.

Embodiment: In this embodiment, the built-in combined waterproof joint with an inflatable airbag is arranged at the position of the tunnel joint. As shown in Figure 1, the overall structure of the tunnel is formed by splicing several pipe joints. The position of the tunnel joint shown in Figure 1 is the connecting position of the tunnel pipe section 1 and the tunnel pipe section 2. A water stop structure composed of two waterproof combinations of the existing OMEGA water stop belt 3 and the existing GINA rubber water stop belt 4 is arranged at the joint joint position of the tunnel pipe section 1 and the tunnel pipe section 2, so as to avoid the tunnel pipe section 1 There is water seepage and water leakage at the joint position of the tunnel pipe section 2. Among them, the existing GINA rubber waterstop 4 is located outside the existing OMEGA waterstop 3 along the longitudinal section direction of the tunnel, and end steel shells 5 for fixing are respectively provided on both sides of the existing GINA rubber waterstop 4 .

As shown in FIG. 1 , the built-in combined waterproof joint with an inflatable air bag in this embodiment includes UHPC corbels 6 fixed on the tunnel pipe section 1 and the tunnel pipe section 2 respectively. The two UHPC corbels 6 pass through the The rib 10 is connected and fixed with the corresponding tunnel tube section 1 and the tunnel joint 2, so as to realize the function of bearing the horizontal load of the UHPC corbel 6 and ensure its firm structure. Corbel end face steel structures 7 are respectively provided on the opposite side end faces of the two UHPC corbels 6 , and the shape and size of the corbel end face steel structures 7 are matched to the shape and size of the opposite side end faces of the UHPC corbels 6 . The connection between them is fixed. The UHPC corbel 6 and the corbel end face steel structure 7 are used as the main components of the waterproof joint, thereby reducing the thickness of the components, so that the installation and construction can be completed by using the spare limit of the original building without affecting the function of the tunnel building.

As shown in FIG. 1 , between the UHPC corbels 6 on both sides and the corresponding tunnel pipe section 1 or tunnel pipe section 2 are respectively provided with water-swellable water-stop glue 11 and pre-buried grouting pipe 12 to realize the UHPC corbel Water stop at the connection part between leg 6 and the main structure of tunnel pipe section 1 or tunnel pipe section 2.

As shown in FIG. 1 , inflatable airbags 8 are respectively fixed on the inner sides of the two corbel end surface steel structures 7 , and the inflation port of the inflatable airbag 8 can be protruded from the corbel end surface steel structure 7 and arranged, so as to conveniently For technicians to inflate the inflatable balloon 8 through the filling port to expand it. For example, as shown in FIG. 1 , if the inflatable airbag 8 on one side (ie, the left side in FIG. 1 ) is inflated, the inflatable airbag 8 will gradually expand under the action of inflation until it is pressed against the The inflatable airbag 8 on the other side (ie, the right side in FIG. 1 ) and the steel structure 7 on the end face of the corbel form a temporary water stop. Two inflatable airbags 8 are used and the other is ready for use.

As shown in FIG. 1 , a built-in OMEGA waterstop 9 is also provided between the two corbel end surface steel structures 7 , and both ends of the built-in OMEGA waterstop band 9 are fixedly connected to the two corbel end surface steel structures 7 respectively. . Along the longitudinal section direction of the tunnel tube section, the built-in OMEGA water stop belt 9 is located inside the temporary water stop formed by the inflatable airbag 8 to form a permanent water stop, thereby realizing the water stop function.

In this embodiment, each component of the built-in combined waterproof joint with an inflatable airbag forms a ring around the cross section of the tunnel pipe section, so as to achieve complete water-stopping of the tunnel pipe section joint.

The application method of the built-in combined waterproof joint with an inflatable airbag in this embodiment refers to applying the built-in combined waterproof joint to the water-stop repair after the failure of the existing water-stop structure at the tunnel joint, as shown in Figure 1 As shown, when the existing OMEGA waterstop 3 and the existing GINA rubber waterstop 4 of the tunnel tube section 1 and the tunnel tube section 2 cannot achieve the water-stop function, the tunnel tube section 1 and the tunnel tube section 2 need to be stopped. To repair the water function, the built-in combined waterproof joint with an inflatable airbag in this embodiment can be used.

Specifically, the built-in combined waterproof joint is constructed and installed to the joint position between the tunnel pipe section 1 and the tunnel pipe section 2 according to the above-mentioned installation structure. At this time, the inflatable airbag 8 is inflated to form a temporary water stop; while the temporary water stop is achieved, the built-in OMEGA water stop belt 9 is used as a permanent water stop. In this way, the water-stopping performance of the joints of the tunnel pipe joints can be guaranteed under the condition that the existing OMEGA water-stop belt 3 and the existing GINA rubber water-stop belt 4 are all damaged. When the OMEGA waterstop 9, which is a permanent waterstop, takes effect, both inflatable airbags 8 are in a deflated, deflated state.

When the built-in OMEGA waterstop 9 fails and needs to be replaced, the inflatable airbag 8 on one side is inflated to make it bulge and squeeze to the opposite inflatable airbag 8 and the steel structure 7 on the end face of the corbel, so as to achieve rapid Temporary water stop, and then technicians can replace the built-in OMEGA water stop belt 9 when the temporary water stop has taken effect, which is convenient for operation and ensures the water stop effect at the joint position of the tunnel pipe.

Although the above embodiments have described in detail the concept and embodiments of the present invention with reference to the accompanying drawings, those of ordinary skill in the art can recognize that various modifications to the present invention can still be made without departing from the scope of the claims. Improvements and transformations will not be repeated here.

Claims (7)

1. a built-in combined waterproof joint with inflatable airbag, it is characterized in that: described built-in combined waterproof joint is arranged at the tunnel joint position, including UHPC corbel, corbel end surface steel structure, refillable airbag, built-in OMEGA stop Water hose; the UHPC corbels are respectively provided on both sides of the tunnel joint position, the corbel end surface steel structures are respectively provided on the opposite side end faces of the UHPC corbels, and the corbel end surfaces on both sides are respectively provided The inflatable airbags are respectively provided on the opposite side end faces of the steel structure, and the two ends of the built-in OMEGA waterstop are respectively connected to the steel structures of the corbel end surfaces on both sides and are located along the inflatable airbags. The inner side in the longitudinal section direction of the tunnel. 2 . The built-in combined waterproof joint with an inflatable airbag according to claim 1 , wherein the inflatable airbag expands and expands under the action of inflation and is pressed against the inflatable airbag on the other side. 3 . ; Two of the inflatable airbags are used and the other is ready. 3. A built-in combined waterproof joint with an inflatable airbag according to claim 1, characterized in that: the UHPC corbel is provided with a water-expandable water-stop glue and a pre-buried grouting pipe, so as to realize the connection between the UHPC corbel and the tunnel. Waterstop between main structures. 4 . The built-in combined waterproof joint with an inflatable airbag according to claim 1 , wherein the UHPC corbel and the main structure of the tunnel are connected and fixed by planting bars. 5 . 5. An application method involving the built-in combined waterproof joint with an inflatable airbag according to claim 1, wherein the built-in combined waterproof joint is applied to the stopper after the existing water-stop structure at the tunnel joint fails. In water restoration; the inflatable airbag in the built-in combined waterproof joint is used as a temporary water stop; the built-in OMEGA water stop in the built-in combined waterproof joint is used as a permanent water stop. 6 . The method for applying a built-in combined waterproof joint with an inflatable airbag according to claim 5 , wherein: when the built-in OMEGA waterstop fails and needs to be replaced, one of the inflatable airbags is Inflate as a temporary water stop to repair the built-in OMEGA water stop. 7. The application method of a built-in combined waterproof joint with an inflatable airbag according to claim 5, characterized in that: after the built-in OMEGA waterstop as a permanent waterstop is installed, the refillable The bladder is deflated.

Images