An accurate positioning device and construction method for installing beam-slab structures over existing roads

Abstract

The present invention provides a precise positioning device and construction method for installing beam slabs spanning an existing road, belonging to the technical field of beam slab installation or steel plate girder installation. A precise positioning device for installing beam slabs spanning an existing road includes a guide rail, a positioning support plate, a positioning clamp mechanism, and a diagonal brace mechanism. A plurality of positioning support plates, positioning clamp mechanisms, and diagonal brace mechanisms are arranged along the length direction of the guide rail. The present invention solves the problems of long time consumption, low utilization rate of mechanical equipment, high labor intensity, low work efficiency, high cost, and reduced safety of ground roads caused by long-term road closure when installing beam slabs or steel plate girders above an existing road.

Description

Technical Field

[0001] The present invention relates to the technical field of beam - slab installation or steel - plate beam installation, and particularly relates to a precise positioning device and construction method for installing beam - slabs over an existing road. Background Art

[0002] Bridge engineering is an important part of highway and municipal road engineering; and the installation of bridge beam - slabs or steel - plate beams is an indispensable part of bridges. With the continuous development of science and technology and transportation engineering, transportation shows a three - dimensional development trend. As urbanization becomes more extensive, the disadvantages gradually exposed by the traditional long - term road closure for beam - slab installation have become increasingly obvious. Rapidly carrying out the installation and positioning of beam - slabs or steel - plate beams has become an urgent problem to be solved in on - site construction.

[0003] In the construction of installing beam - slabs or steel - plate beams over an existing bridge, rapid and precise installation and positioning has become an essential process. During the hoisting construction of steel - plate beams or beam - slabs, the traditional method is to first have surveyors conduct on - site measurement and lofting and adjust and reinforce each beam - slab piece by piece, which cannot carry out continuous operation.

[0004] However, most of the bridges built previously are cases where the traffic volume is not large and long - term road closure for construction can be carried out. For the construction of such bridges, it is very easy to cause inconvenience to the travel of surrounding people. Repeatedly adjusting the beams after the beam - slabs are installed on the cap beam leads to a lag in the construction period. The time utilization rate is extremely low; it also causes waste of the existing road resources below.

[0005] Traditional beam - slab or steel - plate beam installation requires a large amount of manpower and material resources for cooperation, and has low work efficiency and cumbersome construction procedures, resulting in waste of labor and materials, affecting the construction progress. The extended construction time also poses certain safety hazards to the existing road below. The labor and machinery costs are too high, and the economic utilization rate is low.

[0006] Therefore, it is necessary to provide a precise positioning device and construction method for installing beam - slabs over an existing road to solve the above - mentioned existing problems. Summary of the Invention

[0007] In view of this, the present invention provides a precise positioning device and construction method for installing beam - slabs over an existing road, which solves the problems such as long time consumption for installing beam - slabs or steel - plate beams above an existing road, low utilization rate of mechanical equipment, high labor intensity, low work efficiency, high cost, and reduced safety of the ground road caused by long - term road closure.

[0008] To achieve the above - mentioned technical effects, the present invention provides a precise positioning device for installing beam - slabs over an existing road, and adopts the following technical solutions:

[0009] A precise positioning device for installing beam - slabs over an existing road includes:

[0010] The guide rail is located on the upper surface of the capping beam;

[0011] The positioning support plate is located on the guide rail and is used to support the bottom of the road beam slab;

[0012] The positioning clamping mechanism is located on the guide rail and is used to support the side of the road beam slab

[0013] The inclined strut mechanism has its bottom connected to the guide rail and its top in contact with and supporting the upper part of the road beam slab. The positioning clamping mechanism is located inside the inclined strut mechanism, and the positioning support plate is located inside the positioning clamping mechanism. A number of positioning support plates, positioning clamping mechanisms, and inclined strut mechanisms are arranged along the length direction of the guide rail.

[0014] Furthermore, the guide rail is fixedly connected to the upper surface of the capping beam through a mounting plate.

[0015] Furthermore, the positioning clamping mechanism includes clamping bodies located on the left and right sides of the positioning support plate. There are two clamping bodies, which are respectively located on the left and right sides of the positioning support plate, and the left and right sides of the road beam slab are located inside the clamping bodies.

[0016] Furthermore, each clamping body includes a first sliding sleeve sleeved on the guide rail, a U-shaped clamp fixedly connected to the upper surface of the first sliding sleeve. The first sliding sleeve is fixedly connected to the guide rail through a bolt assembly, and the side plate of the road beam slab is placed inside the U-shaped clamp.

[0017] Furthermore, the inclined strut mechanism includes inclined strut bodies located on the left and right sides of the positioning clamping mechanism. There are two inclined strut bodies, which are respectively located on the left and right sides of the positioning clamping mechanism. The top of the inclined strut body is in contact with the upper part of the road beam slab and performs positioning support on the upper part of the road beam slab.

[0018] Furthermore, each inclined strut body includes a second sliding sleeve sleeved on the guide rod, an inclined strut rod connected to the upper surface of the second sliding sleeve through a rotating shaft, and a rubber pad located at the top of the inclined strut rod. The top of the inclined strut rod is in extrusion contact with the upper part of the road beam slab.

[0019] Furthermore, the inclined strut rod includes a first rod body connected to the rotating shaft, and a second rod body located at the bottom inside the first rod body and threadedly connected to the inner surface of the first rod body. The top of the second rod body is in extrusion contact with the road beam slab.

[0020] A construction method for a precise positioning device for installing an overpass existing road beam slab includes the following steps:

[0021] Step 1: After the capping beam concrete is poured, at the backfield, after the relative positions of the device corresponding to the road beam slab are adjusted in place according to the design drawings, wait until the strength of the capping beam reaches the design requirements, then directly lift the device onto the capping beam, and lay out the design plane position of the road beam slab to be installed.

[0022] Step 2: After aligning the positions of the device corresponding to the two beam slabs with the lofting points, sleeved the first sliding sleeve and the second sliding sleeve on the guide rail, and then fixedly connected them to the upper surface of the capping beam through the mounting plate and the bolt assembly. Then, install the U-shaped clamp and the diagonal brace in sequence.

[0023] Step 3: When hoisting the beam slab subsequently, the road beam slab directly falls into the U-shaped clamp. Adjust the verticality of the installation of the beam slab. After the adjustment is completed, adjust the length of the diagonal brace and make the top of the diagonal brace in extrusion contact with the upper part of the road beam slab.

[0024] Step 4: After completing the above steps, the positioning of the road beam slab is completed. The crane releases the hook, and the next road beam slab is installed piece by piece according to the above steps.

[0025] The above technical solutions of the present invention at least include the following beneficial effects:

[0026] 1. The present invention solves the problems of long time consumption, low utilization rate of mechanical equipment, high labor intensity, low work efficiency, high cost, and reduced safety of the ground road caused by long-term road closure when installing beam slabs or steel plate girders above the existing road.

[0027] 2. The present invention is welded by I-beams, channel steels, threaded diagonal braces, steel plates, bolts, etc. The processing raw materials are common and economical. As the number of beam slabs or steel plate girders increases, a connecting plate device can be installed on the guide rail to extend the guide rail. It is not affected by length. The device can be reused.

[0028] 3. The setting of the diagonal brace mechanism and the positioning clamp mechanism in the present invention facilitates the simultaneous support and positioning of the bottom and upper part of the road beam slab, and the positioning effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present invention;

[0030] Figure 2 is a schematic structural diagram of the guide rail and the mounting plate in the embodiment of the present invention;

[0031] Figure 3 is a schematic structural diagram of the positioning clamp mechanism in the A direction in the embodiment of the present invention;

[0032] Figure 4 is a schematic structural diagram when the present invention is in use.

[0033] In the figure:

[0034] 1. Guide rail; 2. Positioning support plate; 3. Positioning clamp mechanism; 4. Diagonal brace mechanism; 5. Mounting plate; 6. Capping beam; 7. Road beam slab; 31. First sliding sleeve; 32. U-shaped clamp; 41. Second sliding sleeve; 42. Rotating shaft; 43. Diagonal brace; 44. Rubber pad; 431. First rod body; 432. Second rod body. Detailed implementation manners

[0035] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will, with reference to the accompanying drawings of the embodiments of the present invention, Figures 1-4 clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] As Figures 1 to 4 shown: A precise positioning device for installing beam-slab structures over an existing road includes a guide rail 1, a positioning support plate 2, a positioning clamping mechanism 3, and a diagonal bracing mechanism 4. A number of positioning support plates 2, positioning clamping mechanisms 3, and diagonal bracing mechanisms 4 are arranged along the length direction of the guide rail 1 for positioning a number of road beam-slab structures 7, solving problems such as long time consumption for installing road beam-slab structures above an existing road, low utilization rate of mechanical equipment, high labor intensity, low working efficiency, high cost, and reduced safety of ground roads caused by long-term road closure. The guide rail, positioning support plate, positioning clamping mechanism, and diagonal bracing mechanism are all made of common processing raw materials, with low cost. As the number of road beam-slab structures increases, a connecting plate device can be added to the guide rail to extend the guide rail, without being affected by length. The device can be reused, improving the utilization efficiency.

[0038] The guide rail 1 is located on the upper surface of the capping beam 6; the guide rail 1 is fixedly connected to the upper surface of the capping beam 6 through a mounting plate 5. The guide rail can be an I-beam, and the guide rail is fixedly welded to the upper surface of the mounting plate 5. The mounting plate 5 is fixedly connected to the upper surface of the capping beam 6 through bolt assemblies.

[0039] The positioning support plate 2 is located on the guide rail 1 and is used to support the bottom of the road beam-slab structure 7; the positioning support plate 2 is fixedly connected to the upper surface of the guide rail 1 through bolt assemblies, and the positioning support plate 2 can be formed by splicing steel plates.

[0040] The positioning card mechanism 3 is located on the guide rail 1 and is used to support the side of the road beam 7. The positioning card mechanism 3 includes a card body located on the left and right sides of the positioning support plate 2. Two card bodies are provided, and the two card bodies are located on the left and right sides of the positioning support plate 2, respectively. The left and right sides of the road beam 7 are located in the card body. The card body includes a first sliding sleeve 31 mounted on the guide rail 1 and a U-shaped card 32 fixedly connected to the upper surface of the first sliding sleeve 31. The first sliding sleeve 31 is fixedly connected to the guide rail 1 by a bolt assembly. The side plate of the road beam 7 is placed in the U-shaped card 32. The first sliding groove 31 can be made of a sleeve or a channel steel. The first sliding sleeve 31 is mounted on the guide rail 1. The position of the first sliding sleeve 31 is adjusted according to the designed position of the road beam 7. Then, the U-shaped card 32 is fixed to the first sliding sleeve 31, that is, the side plate of the road beam 7 is placed in the U-shaped card 32, and the road beam 7 is positioned and supported. The operation is simple and the installation efficiency is high.

[0041] The diagonal bracing mechanism 4 is connected to the guide rail 1 at its bottom and contacts and supports the upper portion of the road beam 7 at its top. The positioning clamp mechanism 3 is located within the diagonal bracing mechanism 4, and the positioning support plate 2 is located within the positioning clamp mechanism 3. The diagonal bracing mechanism 4 includes two diagonal bracing bodies located on the left and right sides of the positioning clamp mechanism 3. The two diagonal bracing bodies are respectively located on the left and right sides of the positioning clamp mechanism 3. The tops of the diagonal bracing bodies contact and support the upper portion of the road beam 7. The diagonal bracing bodies include a second sliding sleeve 41 sleeved on the guide rod, a diagonal bracing rod 43 connected to the upper surface of the second sliding sleeve 41 via a rotating shaft 42, and a rubber pad 44 located at the top of the diagonal bracing rod 43. The top of the diagonal bracing rod 43 is in pressurized contact with the upper portion of the road beam 7. After the road beam 7 is placed on the U-shaped clamp 32, the length of the diagonal bracing rod 43 is adjusted, and then the top of the diagonal bracing rod 43 is brought into contact with the road beam 7, which facilitates support and positioning of the upper portion of the road beam 7.

[0042] The diagonal support rod 43 includes a first rod body 432 connected to the rotating shaft, a second rod body 432 whose bottom is located inside the first rod body 432 and is threadedly connected to the inner surface of the first rod body 432, and the top of the second rod body 432 is in squeeze contact with the road beam 7. According to the needs of use, the first rod body 432 is rotated, and the first rod body 431 moves in the length direction relative to the second rod body 432, thereby adjusting the length of the diagonal support rod 43.

[0043] Example 2

[0044] The construction method of the precise positioning device installed across the existing road beam slab includes the following steps:

[0045] Step 1. After the concrete pouring of the cap beam 6 is completed, the device is adjusted to the relative position of the road beam slab according to the design drawings. After the strength of the cap beam reaches the design requirements, the device is directly hoisted onto the cap beam to mark the design plane position of the road beam slab to be installed.

[0046] Step 2: After aligning the positions of the two beam slabs corresponding to the device with the lofting points, sleeved the first sliding sleeve 31 and the second sliding sleeve 41 on the guide rail 1, and then fixedly connected it to the upper surface of the capping beam through the mounting plate and the bolt assembly. Then, install the U-shaped clamp and the diagonal brace 43 in sequence.

[0047] Step 3: When hoisting the beam later, the road beam slab directly falls into the U-shaped clamp 32. Adjust the verticality of the installation of the beam slab. After the adjustment is completed, adjust the length of the diagonal brace 43 and make the top of the diagonal brace 43 squeeze and contact the upper part of the road beam slab. Step 4: After completing the above steps, the positioning of the road beam slab is completed, and the crane releases the hook. The next road beam slab is installed piece by piece according to the above steps.

[0048] In the present invention, unless otherwise clearly specified and defined, for example, it can be fixedly connected, or can be detachably connected, or integrated; it can be mechanically connected, or can be electrically connected; it can be directly connected, or can be indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0049] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A precise positioning device for installing beam-slab spanning an existing road, characterized in that Including: A guide rail located on the upper surface of the capping beam; A positioning support plate located on the guide rail and used to support the bottom of the road beam slab; A positioning clamping mechanism located on the guide rail and used to support the side plate of the road beam slab; An inclined strut mechanism, whose bottom is connected to the guide rail and whose top contacts and supports the upper part of the road beam slab. The positioning clamping mechanism is located inside the inclined strut mechanism, and the positioning support plate is located inside the positioning clamping mechanism. A number of positioning support plates, positioning clamping mechanisms and inclined strut mechanisms are arranged along the length direction of the guide rail; The guide rail is fixedly connected to the upper surface of the capping beam through a mounting plate; The positioning clamping mechanism includes clamping bodies located on the left and right sides of the positioning support plate. There are two clamping bodies, which are respectively located on the left and right sides of the positioning support plate, and the left and right sides of the road beam slab are located inside the clamping bodies; The clamping body includes a first sliding sleeve sleeved on the guide rail and a U-shaped clamp fixedly connected to the upper surface of the first sliding sleeve. The first sliding sleeve is fixedly connected to the guide rail through a bolt assembly, and the side plate of the road beam slab is placed inside the U-shaped clamp.

2. The precise positioning device for installing the upper-crossing existing road beam slab according to claim 1, wherein, The inclined strut mechanism includes inclined strut bodies located on the left and right sides of the positioning clamping mechanism. There are two inclined strut bodies, which are respectively located on the left and right sides of the positioning clamping mechanism, and the top of the inclined strut body contacts the upper part of the road beam slab and performs positioning support on the upper part of the road beam slab.

3. The precise positioning device for installing the upper-crossing existing road beam slab according to claim 2, characterized in that, The inclined strut body includes a second sliding sleeve sleeved on the guide rail, an inclined strut rod connected to the upper surface of the second sliding sleeve through a rotating shaft, and a rubber pad located at the top of the inclined strut rod. The top of the inclined strut rod is in extrusion contact with the upper part of the road beam slab.

4. The precise positioning device for installing the upper-crossing existing road beam slabs according to claim 3, wherein, The inclined strut rod includes a first rod body connected to the rotating shaft and a second rod body whose bottom is located inside the first rod body and is threadedly connected to the inner surface of the first rod body. The top of the second rod body is in extrusion contact with the road beam slab.

5. Construction method of a precise positioning device for installing beam slabs across an existing road, characterized in that, Implemented by using the precise positioning device for installing existing road beam slabs described in claim 3 or 4, including the following steps: Step 1: After the capping beam concrete is poured, at the backfield, according to the design drawings, after the relative position of the device corresponding to the road beam slab is adjusted in place, wait until the strength of the capping beam reaches the design requirements, then directly lift the device onto the capping beam and lay out the design plane position of the road beam slab to be installed; Step 2: After the positions of the device corresponding to two beam slabs coincide with the layout points, sleeve the first sliding sleeve and the second sliding sleeve on the guide rail, then fixedly connect them to the upper surface of the capping beam through the mounting plate and the bolt assembly, and then install the U-shaped clamp and the inclined strut rod in sequence; Step 3: When hoisting the beam subsequently, the road beam slab directly falls into the U-shaped clamp, adjust the verticality of the beam slab installation, after the adjustment is completed, adjust the length of the inclined strut rod and make the top of the inclined strut rod in extrusion contact with the upper part of the road beam slab; Step 4: After completing the above steps 1 to 3, the positioning of the road beam slab is completed, the crane releases the hook, and the next road beam slab is installed piece by piece according to steps 1 to 4.

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