阅读说明：本技术 一种处理桥梁基础冲刷的全方位注浆装置及其使用方法 (Omnibearing grouting device for treating bridge foundation scouring and use method thereof ) 是由 黄挺 罗成未 侯利军 焦澳 王荣 于 2020-05-08 设计创作，主要内容包括：本发明公开了一种处理桥梁基础冲刷的全方位注浆装置及其使用方法,包括施工机构、钻孔注浆机构和防护水垫形成机构；施工机构包括能够安装于桥梁墩柱上的定位钢套以及连接于定位钢套外部的施工钢平台,施工钢平台上设有若干施工窗以及能够自由移动至各施工窗上方的移动平台；钻孔注浆机构包括具有钻进功能的注浆管以及与注浆管相连的注浆设备,注浆管通过钻杆固定设备安装于移动平台上；防护水垫形成机构包括水泵、与水泵进口端相连的抽水管、与水泵出口端相连的射水管以及安装于射水管端部的喷水环,水泵安装于移动平台上。本发明能够实现桥梁墩柱四周全方位的冲刷坑注浆处理,加固效果好,施工方便、安全性高。(The invention discloses an omnibearing grouting device for treating bridge foundation scouring and a use method thereof, wherein the omnibearing grouting device comprises a construction mechanism, a drilling and grouting mechanism and a protective water cushion forming mechanism; the construction mechanism comprises a positioning steel sleeve capable of being installed on the bridge pier stud and a construction steel platform connected to the outside of the positioning steel sleeve, and the construction steel platform is provided with a plurality of construction windows and a moving platform capable of freely moving to the upper parts of the construction windows; the drilling and grouting mechanism comprises a grouting pipe with a drilling function and grouting equipment connected with the grouting pipe, and the grouting pipe is arranged on the movable platform through drill rod fixing equipment; the protective water cushion forming mechanism comprises a water pump, a water pumping pipe connected with the inlet end of the water pump, a water jetting pipe connected with the outlet end of the water pump and a water spraying ring installed at the end part of the water jetting pipe, and the water pump is installed on the moving platform. The invention can realize the omnibearing flushing pit grouting treatment around the bridge pier stud, and has the advantages of good reinforcing effect, convenient construction and high safety.)

1. An omnibearing grouting device for treating bridge foundation scouring is characterized by comprising a construction mechanism, a drilling grouting mechanism and a protective water cushion forming mechanism;

the construction mechanism comprises a positioning steel sleeve capable of being installed on a bridge pier stud and a construction steel platform connected to the outside of the positioning steel sleeve, and the construction steel platform is provided with a plurality of construction windows and a moving platform capable of freely moving to the upper parts of the construction windows;

the drilling and grouting mechanism comprises a grouting pipe with a drilling function and grouting equipment connected with the grouting pipe, and the grouting pipe is mounted on the mobile platform through drill pipe fixing equipment;

the protective water cushion forming mechanism comprises a water pump, a water pumping pipe connected with the inlet end of the water pump, a water jetting pipe connected with the outlet end of the water pump and a water spraying ring installed at the end part of the water jetting pipe, and the water pump is installed on the moving platform.

2. The all-round slip casting device of processing bridge foundation erodees of claim 1, characterized in that, the location steel bushing includes two symmetrical setting's that link to each other through a plurality of overlap joint buckles location function block, the construction steel platform includes two symmetrical setting's that link to each other through matched with equipment hole and equipment tooth steel platform, the steel platform is connected in the outside of location function block.

3. The omnibearing grouting device for treating bridge foundation scour according to claim 1, wherein the upper end of the positioning steel sleeve is provided with a plurality of safety buckles; a plurality of multi-lip type vacuum chucks are arranged on the inner side of the positioning steel sleeve, and a vacuum generating device for driving the vacuum chucks and a vacuum generating device cable pipeline connected with the vacuum generating device are arranged outside the positioning steel sleeve; and rubber pads are arranged at the upper edge and the lower edge of the inner side of the positioning steel sleeve.

4. The omnibearing grouting device for treating bridge foundation scouring according to claim 1, wherein a protective net and pulley rails are further arranged on the construction steel platform, the pulley rails are positioned on two sides of the construction window and arranged around the construction steel platform, and pulleys capable of sliding in the pulley rails are mounted at the bottoms of the protective net and the mobile platform; the protective net covers the upper portion of the construction window which is not occupied by the mobile platform, the two ends of the protective net are provided with rotatable clamping teeth which go deep into the construction window, and the protective net can be fixed above the construction window by rotating the clamping teeth.

5. The omnibearing grouting device for treating bridge foundation scour according to claim 1, wherein the mobile platform is provided with a fixed hand brake, and the mobile platform is provided with a construction opening; and a protective fence is arranged on the outer edge of the construction steel platform.

6. The omnibearing grouting device for treating bridge foundation scouring according to claim 1, wherein the grouting pipe comprises a drill pipe, a driving device capable of driving the drill pipe to work, a drill bit connected with the bottom end of the drill pipe and a grouting pipe connected with the drill pipe through a flange, the grouting pipe is connected with the grouting device, the drill pipe is mounted on the drill pipe fixing device, a grouting channel is arranged inside the drill pipe, and a plurality of grouting holes are formed in one end, close to the drill bit, of the drill pipe.

7. The omnibearing grouting device for treating bridge foundation scour according to claim 1, wherein a fixed bracket is arranged on the water pump, and the fixed bracket is provided with a fixed sleeve for fixing the water jetting pipe; the water spraying ring is provided with a plurality of water spraying holes which are divided into an incident water spraying hole, a lateral water spraying hole and a wake water spraying hole, the incident water spraying hole is arranged in the incident direction of the water spraying ring, the lateral water spraying holes are arranged on two sides of the incident direction of the water spraying ring, the wake water spraying holes are arranged on the opposite sides of the incident direction of the water spraying ring, the jet angles of the three water spraying holes are the same relative to the vertical direction, but the intensity is gradually reduced, the position of the incident water spraying hole is marked on the water jetting pipe, and the water jetting ring rotates correspondingly when the water jetting pipe is rotated.

8. The omnibearing grouting device for treating bridge foundation scouring according to claim 1, further comprising a power supply, wherein the power supply supplies electric energy to the construction mechanism, the drilling and grouting mechanism and the protective water cushion forming mechanism.

9. The use method of the omnibearing grouting device for treating bridge foundation scouring is characterized by comprising the following steps of:

installing the omnibearing grouting device for treating the bridge foundation scouring;

drilling a grouting pipe with a drilling function into a bridge foundation washing part through a construction window, discharging a water injection pipe through the construction window after drilling into the bridge foundation to a certain depth until a water spray ring at the end part of the water injection pipe is away from the surface of the bridge foundation by a certain distance, rotating to adjust the direction of the water injection pipe, and then connecting the water injection pipe with the outlet end of a water pump;

the grouting pipe is connected with grouting equipment, the grouting equipment is started to start grouting, and when the grouting hole of the grouting pipe does not suck any more grout, the grouting is continued for several minutes and then the grouting is stopped;

putting the water pumping pipe into water, starting the water pump to pump water, and when a certain water pressure is reached in the water jetting pipe, jetting water flow by the water jetting ring to form a space closed protective water cushion to counteract flowing water flow in a certain area of the surface of the bridge foundation;

the grouting slurry is changed into quick-hardening concrete, a grouting pipe is lifted, a grouting hole is exposed in a space closed protective water cushion and stops at the bottom of a scouring pit, grouting equipment is started, slurry injected into a bridge foundation in the grouting pipe is discharged by high pressure, grouting pressure is reduced, the quick-hardening concrete flows out of the space closed protective water cushion under protection to fill the scouring pit, and pressure feeding of the quick-hardening concrete is stopped when the calculated filling amount is reached;

pulling out the grouting pipe from the filled quick-hardening concrete, and closing the water pump and pumping out the water injection pipe when the filled quick-hardening concrete is condensed to a certain strength;

and moving the mobile platform and the construction equipment on the mobile platform to other construction windows, and repeating the using steps to realize the omnibearing grouting and the flushing pit filling of the bridge foundation and achieve the aim of protecting the bridge foundation.

10. The use method of the omnibearing grouting device for treating the bridge foundation scour according to claim 9, wherein the installation of the omnibearing grouting device for treating the bridge foundation scour comprises the following steps:

the construction steel platform is sleeved on the bridge pier stud in a suspending way, and the construction steel platform is lapped by fixedly installing the positioning steel sleeve on the bridge pier stud;

fixing the drill rod fixing equipment and the water pump on the moving platform on the bridge floor, then hoisting the moving platform on the construction steel platform and moving the moving platform to a construction window above a construction point;

the grouting pipe with the drilling function is installed through the drill rod fixing equipment, the water pumping pipe and the water jetting pipe are respectively connected to the inlet end and the outlet end of the water pump, and the end part of the water jetting pipe is provided with a water spraying ring.

Technical Field

The invention belongs to the technical field of bridge foundation scour protection, and particularly relates to an all-dimensional grouting device for treating bridge foundation scour and a using method thereof.

Background

The load on the upper part of the bridge structure and the load generated by water flow, waves, wind and the like are generally transmitted to the lower part foundation by the bridge pier, and the bearing capacity of the foundation is directly related to the length of the interaction segment of the surrounding soil body. The bridge foundation often can take place to erode the phenomenon under the water erosion effect, erode and can cause the loss of the surrounding soil body of bridge foundation for the bearing capacity of bridge foundation descends, produces deformation or even destruction. More and more engineering survey reports at home and abroad show that scouring is one of key factors causing bridge structure damage and bridge collapse accidents. In the use process of the bridge, the problem of scouring of soil around the foundation is difficult to avoid and has obvious harm.

By adopting proper scouring protection measures, the depth of a scouring pit around a bridge foundation can be effectively reduced, and the safety and the stability of a bridge structure are improved. Based on different principles, the current scour protection measures are divided into active protection and passive protection. The active protection aims to change or reduce the incoming flow strength and destroy vortex, and the scouring of the bridge foundation is realized by weakening downward jet flow and horseshoe vortex, and the common measures include the arrangement of a pier guard ring, a pier slot, a pier front sacrificial pile, a ring wing type pier and the like. In the using process, the active protection measures of the bridge can be damaged to lose the protection function. The passive protection is that a protective layer is paved on a riverbed around a bridge foundation to improve the resistance of the bridge foundation to the shear stress of incoming flow, and the main measures at present include riprap protection, foundation expansion protection, protective layer paving and the like, and the passive protection is wide in application range and convenient to use, but has the problems that the position of the protective layer is difficult to maintain, extra shrinkage scouring is possibly caused, and the like. For example, the stone throwing protection which is widely adopted carries out the construction of throwing stones on water by running a ship to a construction point, has the problems of limited construction time, easy influence of water flow conditions and weather and the like, and the stone throwing cannot accurately reach the construction point under the influence of water flow, so that a large amount of stones are required, the construction strength is high, and the resource consumption is large. Considering that the problem of bridge foundation scouring has certain unpredictability, the passive protection has more general significance. Based on the idea of passive protection, research and application of pier foundation scouring protection measures and technologies which are used in a large number in bridge engineering are developed, so that accident risks and economic losses caused by the measures can be effectively reduced, and the method has important practical significance and economic significance.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides the omnibearing grouting device for treating bridge foundation scouring and the using method thereof, can realize omnibearing scouring pit grouting treatment around a bridge pier stud, and has the advantages of good reinforcing effect, convenience in construction and high safety.

The invention provides the following technical scheme:

an omnibearing grouting device for treating bridge foundation scouring comprises a construction mechanism, a drilling and grouting mechanism and a protective water cushion forming mechanism;

the construction mechanism comprises a positioning steel sleeve capable of being installed on a bridge pier stud and a construction steel platform connected to the outside of the positioning steel sleeve, and the construction steel platform is provided with a plurality of construction windows and a moving platform capable of freely moving to the upper parts of the construction windows;

the drilling and grouting mechanism comprises a grouting pipe with a drilling function and grouting equipment connected with the grouting pipe, and the grouting pipe is mounted on the mobile platform through drill pipe fixing equipment;

the protective water cushion forming mechanism comprises a water pump, a water pumping pipe connected with the inlet end of the water pump, a water jetting pipe connected with the outlet end of the water pump and a water spraying ring installed at the end part of the water jetting pipe, and the water pump is installed on the moving platform.

Preferably, the location steel bushing includes the location function piece that links to each other through a plurality of overlap joint buckles two symmetries set up, the steel platform that the construction steel platform includes two symmetries that link to each other through matched with equipment hole and equipment tooth sets up, the steel platform is connected in the outside of location function piece.

Preferably, the upper end of the positioning steel sleeve is provided with a plurality of safety buckles; a plurality of multi-lip type vacuum chucks are arranged on the inner side of the positioning steel sleeve, and a vacuum generating device for driving the vacuum chucks and a vacuum generating device cable pipeline connected with the vacuum generating device are arranged outside the positioning steel sleeve; and rubber pads are arranged at the upper edge and the lower edge of the inner side of the positioning steel sleeve.

Preferably, the construction steel platform is further provided with a protective net and pulley rails, the pulley rails are located on two sides of the construction window and arranged around the construction steel platform, and pulleys capable of sliding in the pulley rails are mounted at the bottoms of the protective net and the mobile platform; the protective net covers the upper portion of the construction window which is not occupied by the mobile platform, the two ends of the protective net are provided with rotatable clamping teeth which go deep into the construction window, and the protective net can be fixed above the construction window by rotating the clamping teeth.

Preferably, the mobile platform is provided with a fixed hand brake, and the mobile platform is provided with a construction opening; and a protective fence is arranged on the outer edge of the construction steel platform.

Preferably, the grouting pipe comprises a drill rod, a driving device capable of driving the drill rod to work, a drill bit connected with the bottom end of the drill rod and a grouting pipe connected with the drill rod through a flange, the grouting pipe is connected with the grouting device, the drill rod is installed on the drill rod fixing device, a grouting channel is arranged inside the drill rod, and a plurality of grouting holes are formed in one end, close to the drill bit, of the drill rod.

Preferably, the water pump is provided with a fixed support, and the fixed support is provided with a fixed sleeve for fixing the water jetting pipe; the water spraying ring is provided with a plurality of water spraying holes which are divided into an incident water spraying hole, a lateral water spraying hole and a wake water spraying hole, the incident water spraying hole is arranged in the incident direction of the water spraying ring, the lateral water spraying holes are arranged on two sides of the incident direction of the water spraying ring, the wake water spraying holes are arranged on the opposite sides of the incident direction of the water spraying ring, the jet angles of the three water spraying holes are the same relative to the vertical direction, but the intensity is gradually reduced, the position of the incident water spraying hole is marked on the water jetting pipe, and the water jetting ring rotates correspondingly when the water jetting pipe is rotated.

Preferably, the construction machine further comprises a power supply, and the power supply provides electric energy for the construction mechanism, the drilling and grouting mechanism and the protective water cushion forming mechanism.

The use method of the omnibearing grouting device for treating bridge foundation scouring comprises the following steps:

installing the omnibearing grouting device for treating the bridge foundation scouring;

drilling a grouting pipe with a drilling function into a bridge foundation washing part through a construction window, discharging a water injection pipe through the construction window after drilling into the bridge foundation to a certain depth until a water spray ring at the end part of the water injection pipe is away from the surface of the bridge foundation by a certain distance, rotating to adjust the direction of the water injection pipe, and then connecting the water injection pipe with the outlet end of a water pump;

the grouting pipe is connected with grouting equipment, the grouting equipment is started to start grouting, and when the grouting hole of the grouting pipe does not suck any more grout, the grouting is continued for several minutes and then the grouting is stopped;

putting the water pumping pipe into water, starting the water pump to pump water, and when a certain water pressure is reached in the water jetting pipe, jetting water flow by the water jetting ring to form a space closed protective water cushion to counteract flowing water flow in a certain area of the surface of the bridge foundation;

the grouting slurry is changed into quick-hardening concrete, a grouting pipe is lifted, a grouting hole is exposed in a space closed protective water cushion and stops at the bottom of a scouring pit, grouting equipment is started, slurry injected into a bridge foundation in the grouting pipe is discharged by high pressure, grouting pressure is reduced, the quick-hardening concrete flows out of the space closed protective water cushion under protection to fill the scouring pit, and pressure feeding of the quick-hardening concrete is stopped when the calculated filling amount is reached;

pulling out the grouting pipe from the filled quick-hardening concrete, and closing the water pump and pumping out the water injection pipe when the filled quick-hardening concrete is condensed to a certain strength;

and moving the mobile platform and the construction equipment on the mobile platform to other construction windows, and repeating the using steps to realize the omnibearing grouting and the flushing pit filling of the bridge foundation and achieve the aim of protecting the bridge foundation.

Preferably, the installation of the omnibearing grouting device for treating bridge foundation scouring comprises the following steps:

the construction steel platform is sleeved on the bridge pier stud in a suspending way, and the construction steel platform is lapped by fixedly installing the positioning steel sleeve on the bridge pier stud;

fixing the drill rod fixing equipment and the water pump on the moving platform on the bridge floor, then hoisting the moving platform on the construction steel platform and moving the moving platform to a construction window above a construction point;

the grouting pipe with the drilling function is installed through the drill rod fixing equipment, the water pumping pipe and the water jetting pipe are respectively connected to the inlet end and the outlet end of the water pump, and the end part of the water jetting pipe is provided with a water spraying ring.

Compared with the prior art, the invention has the beneficial effects that:

(1) the construction mechanism comprises the positioning steel sleeve and the construction steel platform connected to the outside of the positioning steel sleeve, and the positioning steel sleeve is fixedly arranged on the bridge pier stud, so that the construction steel platform can be lapped and fixed, and the safety construction is facilitated;

(2) the drilling and grouting mechanism comprises a grouting pipe with a drilling function and grouting equipment connected with the grouting pipe, wherein the grouting pipe can drill a weak and weakened soil layer in a certain range below a scour pit to perform grouting construction, so that the weak soil layer at a certain depth below the scour pit is reinforced, and the scour pit can be filled after the grout is spread upwards;

(3) the protective water cushion forming mechanism comprises a water pump, a water pumping pipe connected with the inlet end of the water pump, a water jetting pipe connected with the outlet end of the water pump and a water spraying ring arranged at the end part of the water jetting pipe, wherein the water jetting pipe is connected with the water pump after being lowered to the position near a construction point, and water beams are jetted from water spraying holes on the water spraying ring to form a space closed protective water cushion, so that flowing water in a certain space range of the construction point can be offset, the flow velocity of the water in a certain space at the construction point is reduced, a relatively static underwater construction environment around a grouting construction point is constructed, grouting construction operation is facilitated, uncured grouting bodies are prevented from being taken away by the water flow, and the protective water cushion forming mechanism has;

(4) the construction steel platform is provided with a plurality of construction windows and a movable platform capable of freely moving to the upper part of each construction window, the grouting pipe is installed on the movable platform through drill rod fixing equipment, and the water pump is installed on the movable platform, so that the operation can be carried out along different construction windows, the all-round grouting construction around a bridge pier stud is realized, compared with the conventional common passive scouring protection measures such as stone throwing of ships on water, the all-round scouring pit grouting treatment around the pier can be conveniently realized, and the difficulty of transferring related equipment in the construction process is avoided.

Drawings

FIG. 1 is a front view of the present invention during drilling and grouting (with the guard rail removed);

FIG. 2 is a partial enlarged view of (i) in FIG. 1;

FIG. 3 is a cross-sectional view at C-C of FIG. 2;

FIG. 4 is a side view of the present invention (with the guard rail removed);

FIG. 5 is a top view of a steel jacket and a construction steel platform;

FIG. 6 is a top view of an unassembled steel sleeve and construction steel platform;

FIG. 7 is a side view of a steel jacket and construction steel platform;

FIG. 8 is a cross-sectional view taken at A-A of FIG. 5;

FIG. 9 is a cross-sectional view taken at B-B of FIG. 5;

FIG. 10 is a front elevation view of the present invention with fast hardening concrete poured to fill a scour pit (after removal of the protective fence);

FIG. 11 is an enlarged view of a portion of FIG. 10;

FIG. 12 is a partial enlarged view of section ③ of FIG. 10;

FIG. 13 is a top view of FIG. 12;

FIG. 14 is a cross-sectional view taken at D-D of FIG. 11;

labeled as: 1. positioning the steel sleeve; 1-1, positioning a functional block; 1-2, overlapping and buckling; 2. a vacuum generating device cable duct; 3. a safety buckle; 4. a vacuum chuck; 5. a vacuum generating device; 6. a rubber pad; 7. constructing a steel platform; 7-1, a steel platform; 8. assembling holes; 9. assembling the teeth; 10. constructing a window; 11. a protective net; 12. a pulley track; 13. a mobile platform; 14. clamping teeth; 15. a pulley; 16. a protective fence; 17. a power source; 18. a drive device; 19. drill pipe fixing equipment; 20. a drill bit; 21. a drill stem; 21-1, grouting channels; 21-2, grouting holes; 22. a mud jacking pipe; 23. grouting equipment; 24. a water pump; 25. fixing a bracket; 25-1, fixing sleeves; 26. a water pumping pipe; 27. a water jet pipe; 28. a water spray ring; 28-1, an incident flow water spraying hole; 28-2, side stream water spray holes; 28-3, wake water jet holes; 29. a space closed protective water cushion; 30. drilling; 31. slurry; 32. hardening the concrete quickly; 33. bridge pier stud; 34. bridge foundation.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

It should be noted that in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.