CN113106856A

CN113106856A - Nested vertical water drain pipe of bridge

Info

Publication number: CN113106856A
Application number: CN202110391920.0A
Authority: CN
Inventors: 权俊豪; 亓路宽
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-07-13

Abstract

The invention discloses a nested bridge vertical water drain pipe which comprises a vertical water drain pipe penetrating through a bridge body, a casing pipe nested outside the water drain pipe and a vertical reinforcing steel bar outside the casing pipe, wherein a water drain pipe body comprises a water drain pipe cover at the top, a water drain steel pipe arranged below the water drain pipe cover and a water drain pipe, the upper part of the water drain pipe is a cone, the opening of the water drain pipe faces upwards, and the lower part of the water drain pipe is a cylinder. The upper part of the sleeve nested outside the drain pipe is a cylinder with a cone opening facing upwards and the lower part, a clamping groove is further arranged in the cylinder, and vertical steel bars are arranged outside the cone. Reach the effect of quick discharge bridge floor fluid through setting up the outlet pipe, and the sleeve pipe effect of nestification outside the outlet pipe is because of droing, not hard up lose drainage effect, construction reason lead to that outlet pipe and concrete combine not closely to lead to the water infiltration roof beam body, prevents that water from further permeating and guide water to ooze the roof beam body, sets up the draw-in groove and can prevent that the outlet pipe from producing too big displacement and fix the outlet pipe and guarantee the outlet pipe normal operating.

Description

Nested vertical water drain pipe of bridge

Technical Field

The invention belongs to the technical field of bridges, and particularly relates to the field of bridge drainage and seepage prevention.

Background

With the gradual maturity of bridge design and construction technology in China, the durability of bridges is more and more emphasized by people, wherein the water damage of bridges is an important disease which seriously affects the durability and safety of bridges. Because the diffusion of harmful ions in concrete is accelerated when the water content of the concrete is increased, so that the concrete is easy to generate harmful phenomena such as carbonization, alkali-aggregate reaction and the like, the corrosion rate of water to reinforcing steel bars is accelerated, and the damage of freeze-thaw cycles to the concrete is aggravated in cold regions due to the increase of the water content. In order to solve the problem of water damage of the bridge, the bridge drainage system plays a key role, and the bridge drainage system can quickly drain water and prevent the water from staying on the surface of the bridge, so that the corrosion of the water to the bridge can be effectively reduced.

At present, the drainage mode generally adopted by the bridge floor drainage system is that bridge floor water flows are converged to a drainage hole through a longitudinal cross slope, then enter a transverse or longitudinal drainage pipe through the drainage hole, and finally are drained into a ground drainage facility or a river through a drainage pipe. However, when the joint surface of the drain pipe and the concrete is not compact, the joint of the drain pipe is leaked, or the drain pipe is blocked or falls off due to construction quality, uncontrollable natural factors and the like, water can permeate through the gap to cause adverse effects on the durability of the bridge and even damage to the beam body.

Disclosure of Invention

The invention provides a novel nested bridge vertical water drain pipe, which aims to solve the technical problems of looseness, falling off and water seepage of the water drain pipe in the conventional bridge vertical water drain pipe and can prevent the water drain pipe from generating overlarge displacement and inhibit the corrosion and damage of seepage water to a beam body.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the utility model provides a novel vertical water-drain mast of bridge, includes the water-drain mast, its characterized in that water-drain mast is from last to being divided into water-drain mast lid, sluicing steel pipe, sluicing body down, still includes nested sleeve pipe, and its characterized in that divide into upper and lower part, and upper and lower part is as an organic whole, and the first half is the cone, and the latter half is the cylinder, and the latter half of sleeve pipe is equipped with the draw-in groove, and the first half is equipped with vertical reinforcing bar.

Preferably, the downcomer cover is an inverted cone and is vertically connected to the downcomer cover.

Preferably, the drain steel pipe is a cylinder, and the surface of the drain steel pipe is provided with holes at certain intervals and is installed at the lower part of the drain pipe cover.

Preferably, the sluicing body is funnel-shaped structure, and the upper half is the cone, and the lower half is the cylinder.

Preferably, the inner diameter of the sleeve is 5-8cm away from the outermost edge of the drainage pipe body, and the opening position is 5-8cm away from the concrete surface of the beam body.

Preferably, the inner diameter of the cylinder is 7-9mm larger than the outer diameter of the cylinder at the lower half part of the drainage pipe body, the upper plane is +/-2 cm away from the upper plane of the cylinder part of the drainage pipe body, the length of the cylinder is 3-8cm shorter than that of the drainage pipe body under the condition of ensuring that the cylinder extends out of the beam body, and clamping grooves are arranged in the cylinder at intervals of 90 degrees.

Preferably, the clamping groove is approximately rectangular, three surfaces of the clamping groove are linear surfaces, the surface close to the sleeve is a curved surface, the distance from the clamping groove to the water drainage pipe body is 2mm, and the upper end and the lower end of the clamping groove are inwardly shortened by 2-3mm relative to the cylinder at the lower part of the sleeve.

Preferably, the vertical steel bars are welded at intervals of 90 degrees on the outer side of the cone of the upper half part of the sleeve.

The invention also provides a construction method of the novel bridge vertical water drain pipe, which comprises the following steps:

s1: the nested sleeve (4), the clamping groove (5) in the sleeve and the vertical steel bar (6) outside the sleeve are partially embedded into the beam when the beam body is prefabricated and bound with the reserved steel bar.

S2: the installation and construction methods of the drain pipe cover (1), the drain steel pipe (2) and the drain pipe body (3) are the same as those of a common bridge drain pipe.

Compared with the prior art, the invention has the following advantages:

1. according to the novel vertical bridge drainage device, the drainage pipe is used for quickly draining water from the surface of a bridge under normal conditions, when the drainage pipe loses the function or the contact surface of the drainage pipe and a waterproof layer is not compact, so that fluid permeates into a beam body, the sleeve nested outside the drainage pipe is used for preventing water from further permeating and enabling water to rapidly permeate from the inside of the beam body, and the influence of water on the corrosion, damage and durability of the beam body is reduced.

2. According to the novel bridge vertical water drainage device, the clamping groove is formed in the sleeve, so that the effect of fixing the water drainage pipe can be achieved, and the water drainage pipe is prevented from loosening and falling off.

3. According to the novel bridge vertical water draining device, the vertical steel bars are welded on the outer side of the sleeve, so that the sleeve is prevented from warping, and the concrete and the sleeve are connected more tightly.

Drawings

FIG. 1 is a schematic sectional view of a novel nested bridge vertical downcomer according to the present invention

FIG. 2 is a schematic view of a downcomer according to the present invention

FIG. 3 is a plan, cross-sectional view of a downcomer cover of the present invention

FIG. 4 is a plan view and a sectional view of a drain steel pipe according to the present invention

FIG. 5 is a plan view, a cross-sectional view of a drain pipe body according to the present invention

FIG. 6 is a plan, cross-sectional view of a nested cannula of the present invention

In the figure: 1. a downcomer cover; 2. a water drainage steel pipe; 3. a water drainage pipe body; 4. nesting the sleeve; 5. a cannula slot; 6. vertical steel bar

Detailed Description

So that those skilled in the art can better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1:

as shown in fig. 1, the embodiment of the vertical drain pipe for a bridge of the present invention includes a drain pipe cover 1, a drain steel pipe 2, a drain pipe body 3, a casing 4 nested outside the drain pipe, a slot 5 inside the casing, and a vertical steel bar 6 outside the casing.

In this embodiment, the outlet pipe cover 1 is largely as shown in fig. 3, and has a cone-shaped body with an upward opening, an upper part and a lower part which are communicated with each other, and a plurality of 5-8mm grids are arranged in the middle to block large floating objects and prevent the large floating objects from blocking the outlet pipe.

In this embodiment, the water draining steel pipe 2 is a cylinder with a thickness of 5-8mm, and holes are uniformly formed around the cylinder for draining water from the pavement layer, as shown in fig. 4.

In this embodiment, as shown in fig. 5, the upper half of the drainage pipe body is a cone with an upward opening, and the outer diameter D1 of the drainage pipe body is 2-4cm larger than the inner diameter D2 to prevent water from flowing down from the outer wall of the drainage steel pipe to penetrate into the beam body.

In this embodiment, as shown in fig. 2, the drain pipe is preferably integrally made of PVC or cast iron, and when the drain pipe needs to be assembled on site, the drain pipe cover 1 is erected on the uppermost and lowermost portions to form the drain steel pipe 2 and the drain pipe body 3.

In this embodiment, in order to ensure the convenience and stability of the installation of the drain pipe, the lower part of the drain pipe cover 1 should be provided with a clamping groove slightly larger than the diameter of the drain steel pipe, and the inner diameter D2 of the upper part of the drain pipe body 3 should just fit with the diameter D2 of the drain steel pipe.

In this embodiment, the casing nested outside the drain pipe is as shown in fig. 6, the upper part of the casing nested outside the drain pipe is a cylinder with an upward cone opening and a lower part, and a clamping groove is further formed in the cylinder.

In the embodiment, the distance H1 between the opening of the cone on the upper half part of the sleeve and the concrete surface is 5-7cm, and the opening radius D4 is 5-8cm larger than the outer diameter D1 of the opening on the upper part of the drainage pipe body.

In the embodiment, a vertical steel bar is welded on the outer side of the cone of the upper half part of the sleeve at intervals of 90 degrees.

In this embodiment, the cylinder internal diameter D2 of sleeve pipe the latter half is 7-9mm big for sluicing body the latter half cylinder external diameter D3, goes up plane distance sluicing body cylinder body and divides the plane 2cm on, and length ratio sluicing body is short 3-8cm under the circumstances of guaranteeing to extend the roof beam body, and inside every 90 is equipped with draw-in groove 5.

In this embodiment, the slot 5 is approximately rectangular, three sides are linear surfaces, the surface close to the sleeve is a curved surface, the distance D6 between the two opposite slots is 2cm greater than the outer diameter D3 of the drain pipe body, and the upper and lower ends of the slot are inwardly shortened by 2-3mm relative to the cylinder at the lower part of the sleeve.

In this embodiment, a construction method of the novel bridge vertical water draining device includes the following steps:

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. The utility model provides a vertical water-drain mast of nested formula bridge, includes the water-drain mast, its characterized in that water-drain mast is from last to being divided into water-drain mast lid (1), sluicing steel pipe (2), sluicing body (3) down, still includes nested sleeve pipe (4), its characterized in that divide into upper and lower part, and upper and lower part is as an organic whole, and the first half is the cone, and the latter half is the cylinder, and sleeve pipe the latter half inboard is equipped with draw-in groove (5), and the sleeve pipe the first half outside is equipped with vertical reinforcing bar (.

2. The nested bridge vertical drain pipe of claim 1, wherein: the drain pipe cover is an inverted cone and is communicated up and down.

3. The nested bridge vertical drain pipe of claim 1, wherein: the water drainage steel pipe is a cylinder, and holes are formed in the surface of the water drainage steel pipe at certain intervals.

4. The nested bridge vertical drain pipe of claim 1, wherein: the sluicing body is funnel-shaped structure, and the first half is the cone, and the latter half is the cylinder.

5. The nested bridge vertical drain pipe of claim 1, wherein: the upper half part of the cone of the nested casing pipe (4) is 2mm away from the outermost edge of the drainage pipe body, the opening position of the casing pipe is 5-8cm away from the concrete surface of the beam body, and vertical steel bars (6) are arranged on the outer part of the casing pipe at intervals of 90 degrees.

6. The nested bridge vertical drain pipe of claim 5, wherein: vertical reinforcing steel bars (6) are welded on the outer side of the upper half cone of the sleeve at intervals of 90 degrees.

7. The nested bridge vertical drain pipe of claim 5, wherein: the inner diameter of the cylinder is 7-9mm larger than the outer diameter of the cylinder at the lower half part of the water drainage pipe body, the upper plane is +/-2 cm away from the upper plane of the cylinder part of the water drainage pipe body, the length of the cylinder is 3-8cm shorter than that of the water drainage pipe body under the condition that the cylinder part is ensured to extend out of the beam body, and clamping grooves (5) are arranged in the cylinder at intervals of 90 degrees.

8. The nested bridge vertical drain pipe of claim 6, wherein: the clamping grooves are approximately rectangular, three surfaces of the clamping grooves are linear surfaces, the surface close to the sleeve is a curved surface, the distance between the two opposite clamping grooves is 2mm greater than the outer diameter of the water drain pipe body, and the upper ends and the lower ends of the clamping grooves are inwardly shortened by 2-3mm relative to the cylinder at the lower part of the sleeve.

9. A construction method of a vertical bridge water draining device is characterized by comprising the following steps:

s1: the nested sleeve (4), the sleeve internal clamping groove (5) and the sleeve external vertical steel bar (6) are partially embedded into the beam when the beam body is prefabricated and bound with the reserved steel bar;