Device and Method for Accurately Fixing Internal Waterstop in Lakebed Tunnel

Abstract

The invention discloses a device and a method for accurately fixing an internal waterstop in a lakebed tunnel, comprising two supporting bars arranged in parallel, two transverse clamping bars arranged in parallel between the supporting bars, vertical clamping bars arranged on the transverse clamping bars, wherein the supporting bars, the transverse clamping bars and the vertical clamping bars are mutually perpendicular, at least two vertical clamping bars are arranged on each transverse clamping bar, and the vertical clamping bars are arranged at the inner side of the transverse clamping bars. The beneficial effects of the invention are as follows: With vertical clamping bars that clamp the waterstop, the invention can limit the movement and rotational degree of freedom of the waterstop within in the space, to avoid displacement of the waterstop, thus making the construction more productive.

Claims

1. A device for accurately fixing an internal waterstop in a lakebed tunnel, characterized in that it comprises two supporting bars arranged in parallel (3), two transverse clamping bars (2) arranged in parallel between the supporting bar (3) and the supporting bar (3), vertical clamping bars (1) arranged on the transverse clamping bars (2), wherein the supporting bars (3), the transverse clamping bars (2) and the vertical clamping bars (1) are mutually perpendicular, at least two vertical clamping bars (1) are arranged on each transverse clamping bar (2), and the vertical clamping bars (1) are arranged at the inner side of the transverse clamping bars (2).

2. The device for accurately fixing an internal waterstop in a lakebed tunnel according to claim 1, characterized in that the spacing between the supporting bar (3) and the supporting bar (3) is greater than the width of the waterstop (5).

3. The device for accurately fixing an internal waterstop in a lakebed tunnel according to claim 1, characterized in that the vertical clamping bars (1) on one transverse clamping bar (2) are aligned one-to-one with the vertical clamping bars (1) on the other transverse clamping bar (2).

4. The device for accurately fixing an internal waterstop in a lakebed tunnel according to claim 3, characterized in that the spacing between the vertical clamping bars (1) corresponding to different transverse clamping bars (2) is less than or equal to the minimum thickness of the waterstop.

5. The device for accurately fixing an internal waterstop in a lakebed tunnel according to claim 1, characterized in that the transverse clamping bars (2) are slidably arranged on the supporting bars (3).

6. The device for accurately fixing an internal waterstop in a lakebed tunnel according to claim 1, characterized in that the vertical clamping bars (1) are slidably arranged on the transverse clamping bars (2).

7. The device for accurately fixing an internal waterstop in a lakebed tunnel according to claim 1, characterized in that a diagonal brace is provided between the transverse clamping bars (2) and the supporting bars (3).

8. A method for accurately fixing an internal waterstop in a lakebed tunnel, characterized in that it comprises the following steps: Step 1: constructing the bar construction in the tunnel; Step 2: temporarily fixing the waterstop at the design position; Step 3: constructing any of the supporting bars (3), the vertical clamping bars (1) and the transverse clamping bars (2) described in claim 1, and clamping the ends of the waterstop with the vertical clamping bars (1); Step 4: welding the supporting bars (3) and the transverse clamping bars (2); Step 5: constructing the supporting bars at locations other than the ends of the waterstop.

9. The method for accurately fixing an internal waterstop in a lakebed tunnel according to claim 8, characterized in that the supporting bars (3) are welded with the bar construction of the tunnel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The FIGURE is the schematic diagram for the installation of the fixing device,

[0022] wherein, 1—vertical clamping bar, 2—transverse clamping bar, 3—supporting bar, 4—joint filler, 5—waterstop, 6—main bar, 7—pre-cast concrete, 8—post-cast concrete, 9—upstream face of structure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The present invention will be further described in detail in combination with examples, but it is not limited to the following embodiments.

Embodiment 1

[0024] As shown in the FIGURE, in the embodiment, a device for accurately fixing an internal waterstop in a lakebed tunnel, comprising two supporting bars arranged in parallel 3, two transverse clamping bars 2 arranged in parallel between the supporting bar 3 and the supporting bar 3, vertical clamping bars 1 arranged on the transverse clamping bars 2, wherein the supporting bars 3, the transverse clamping bars 2 and the vertical clamping bars 1 are mutually perpendicular, at least two vertical clamping bars 1 are arranged on each transverse clamping bar 2, and the vertical clamping bars 1 are arranged at the inner side of the transverse clamping bars 2.

[0025] In construction, structural steel bars of the tunnel are first constructed, the supporting bars 3 are welded to the main bars 6 of the structural steel bars, and both ends of the waterstop 5 are temporarily fixed and installed at the corresponding positions, wherein the median line of the waterstop 5 falls at the design joint between the two tunnels. The transverse clamping bars 2 and the vertical clamping bars 1 are constructed respectively, the transverse clamping bars 2 are welded on the supporting bars 3, the waterstop 5 is subject to pressure exerted by the vertical clamping bars 1 on both sides of the waterstop 5, then supporting bars in the middle of the waterstop 5 are constructed, and finally the waterstop 5 is accurately fixed.

[0026] By exerting clamping force at the ends of the waterstop 5 with the vertical clamping bars 1, the invention makes the vertical clamping bars 1 in close contact with the waterstop 5, effectively limiting the ends of the waterstop 5 in all directions, thus limiting the ends of the waterstop 5 to the required position and ensuring its positional accuracy. In this way, the waterstop 5 can be positioned more accurately when the middle of the waterstop 5 is fixed later. This improves the shock resistance at the ends of the waterstop 5 during concreting, avoiding the displacement of the waterstop 5 caused by impact of concrete, thereby ensuring the construction quality.

[0027] Free of clamp structures, the invention stands out for easy, convenient operations, which makes the construction faster, more productive and less difficult. As the vertical clamping bars 1 are in contact with the waterstop 5 via a cylindrical surface, the pressure exerted on the waterstop 5 is distributed evenly, thus better avoiding water leak caused by the waterstop 5 being crushed by the vertical clamping bars 1.

[0028] In this embodiment, the vertical clamping bars 1 and the transverse clamping bars 2 can be welded, to improve the connection strength and relative position accuracy of the vertical clamping bars 1 and the transverse clamping bars 2. This aims to avoid the displacement of the waterstop 5 caused by relative displacement between the vertical clamping bars 1 and the transverse clamping bars 2 amidst impact of concrete.

Embodiment 2

[0029] On the basis of the above embodiment, in this embodiment, the spacing between the supporting bar 3 and the supporting bar 3 is greater than the width of the waterstop 5. In this way, the waterstop 5 can be shunned when welding the supporting bars 3 and the transverse clamping bars 2, thereby preventing the waterstop 5 from being damaged during welding.

Embodiment 3

[0030] Based on the above embodiment, in this embodiment, the vertical clamping bars 1 on one transverse clamping bar 2 are aligned one-to-one with the vertical clamping bars 1 on the other transverse clamping bar 2. When the vertical clamping bar 1 clamps the waterstop 5, the pressure on both sides of the waterstop 5 can be distributed symmetrically. This prevents the waterstop 5 from being subject to ending deformation under the pressure, thereby helping the waterstop 5 better maintain the positional accuracy.

[0031] In the embodiment, the spacing between the vertical clamping bars 1 corresponding to different transverse clamping bars 2 is less than or equal to the minimum thickness of the waterstop. In this way, the vertical clamping bars 1 can fully clamp the waterstop 5, thereby preventing the waterstop 5 from loosening.

Embodiment 4

[0032] On the basis of the above embodiment, in this embodiment, the transverse clamping bars 2 are slidably arranged on the supporting bars 3, so that the spacing between the transverse clamping bar 2 and the transverse clamping bar 2 can be adjusted by the relative sliding of the transverse clamping bars 2 and the supporting bars 3. In this way, the spacing between the vertical clamping bars 1 on different transverse clamping bars 2 can be adjusted, thus making the clamping force exerted by the vertical clamping bars 1 on the waterstop 5 adjustable.

[0033] In this embodiment, one of the supporting bars 3 can be provided with two sections of external threads that are symmetrically distributed and in opposite rotation direction, and the two transverse clamping bars 2 are respectively provided with internal thread sleeves correspondingly connected to the external threads. The transverse clamping bars 2 are provided, at the other end, with a sleeve connected to the other supporting bar 3. When the waterstop 5 is clamped, the two transverse clamping bars 2 can be controlled to move toward or away from each other by rotating the supporting bars 3 with external threads. This helps better adjust the spacing between the two transverse clamping bars in a manual way as well as the clamping force exerted by the vertical clamping bars 1 on the waterstop 5 based on construction conditions.

[0034] In this embodiment, the vertical clamping bars 1 are slidably arranged on the transverse clamping bars 2. This helps better adjust the spacing between the vertical clamping bars 1 on the same transverse clamping bar 2 according to the specific construction conditions, and the size or model of the waterstop 5.

[0035] In this embodiment, the transverse clamping bars 2 are rotationally connected to the internal thread sleeve and the sleeve respectively. Besides, the transverse clamping bars 2 can also be provided with two sections of external threads that are symmetrically distributed and in opposite rotation direction. The vertical clamping bars 1 are provided with external thread sleeves connected to the external thread, so that the two vertical clamping bars 1 can be controlled to move toward or away from each other by rotating the transverse clamping bars 2. In this way, the spacing between the two vertical clamping bars can be adjusted.

[0036] A diagonal brace is provided between the transverse clamping bars 2 and the supporting bars 3.

[0037] The other steps in the present embodiment are identical to those in the above-mentioned embodiments and will not be repeated herein.

[0038] The above-mentioned embodiments are only preferred embodiments of the present invention and are not restricted thereto in any way. Any simple modification and equivalent alterations made to these embodiments based on the technical essence of the present invention fall within the protection scope of the present disclosure.