Assembly type anti-collision retaining wall and bridge deck pavement combined structure and construction method thereof

Abstract

The invention discloses an assembly type anti-collision retaining wall and bridge deck pavement combined structure and a construction method thereof.The combined structure comprises two rows of assembly type anti-collision retaining walls arranged on the two sides of the top face of a concrete bridge respectively; the fabricated bridge floor is arranged in the middle of the top surface of the concrete bridge, and first post-cast strips are formed between the fabricated bridge floor and the two rows of fabricated anti-collision retaining walls; and the connecting pieces are located in the corresponding first post-cast strips and used for connecting the fabricated bridge floor and the fabricated anti-collision retaining walls in the corresponding rows, and the construction efficiency is improved by arranging the combined structure.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a combined structure of prefabricated crash barriers and bridge deck pavement and its construction method. Background Technology

[0002] Currently, concrete bridge crash barriers and bridge deck paving are mostly constructed using cast-in-place methods. During cast-in-place construction, crash barriers require steel formwork and specialized formwork trolleys, resulting in a large investment of construction resources and inconvenience for on-site safety management. Crash barriers and bridge deck paving cannot be carried out simultaneously, leading to a slow construction speed. Furthermore, during cast-in-place construction, adjacent construction sections are prone to misalignment due to the quality of formwork installation. The cumulative deviation of the steel formwork can also cause the overall linearity of the guardrail to be insufficiently straight. Moreover, the formwork support is highly dependent on the accuracy of the bridge structure elevation, and the elevation adjustment capability is limited. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a combined structure of prefabricated crash barriers and bridge deck paving and its construction method. The prefabricated structure facilitates the simultaneous construction of crash barriers and bridge deck paving, thus improving construction efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is a combined structure of prefabricated crash barriers and bridge deck pavement, comprising: Two rows of prefabricated crash barriers are installed on both sides of the top surface of the concrete bridge. The prefabricated bridge deck is set in the middle of the top surface of the concrete bridge, and a first post-pouring strip is formed between the prefabricated bridge deck and the two rows of prefabricated anti-collision retaining walls. The connector, located within the corresponding first post-cast strip, is used to connect the prefabricated bridge deck to the corresponding row of prefabricated crash barriers.

[0005] A further improvement of the combined structure of the prefabricated crash barrier and bridge deck pavement of the present invention is that the top surface of the concrete bridge is covered with a grout layer, and both the prefabricated crash barrier and the prefabricated bridge deck are set on the grout layer.

[0006] A further improvement of the combined structure of the prefabricated crash barrier and bridge deck pavement of the present invention is that each row of the prefabricated crash barrier is composed of multiple prefabricated crash barrier units closely joined end to end.

[0007] A further improvement of the combined structure of the prefabricated crash barrier and bridge deck pavement of the present invention is that each prefabricated crash barrier unit has a protrusion / groove at its front end and a groove / protrusion at its rear end for the protrusion / groove of adjacent prefabricated crash barrier units to cooperate and connect.

[0008] A further improvement of the combined structure of the prefabricated crash barrier and bridge deck pavement of the present invention is that a sealant is applied to the joints between adjacent prefabricated crash barrier units.

[0009] A further improvement of the combined structure of the prefabricated crash barrier and bridge deck pavement of the present invention is that the connecting member includes a first reserved bar and a second reserved bar. One end of the first reserved bar is embedded in the prefabricated bridge deck, and the other end extends toward the corresponding row of the prefabricated crash barrier. One end of the second reserved bar is embedded in the prefabricated crash barrier, and the other end extends toward the prefabricated bridge deck and is used to overlap with the first reserved bar.

[0010] A further improvement of the combined structure of the prefabricated anti-collision barrier wall and bridge deck pavement of the present invention is that the number of the first reserved reinforcement and the second reserved reinforcement are both multiple, and the multiple first reserved reinforcement and the multiple second reserved reinforcement are all spaced apart along the length direction of the concrete bridge.

[0011] A construction method for combining prefabricated crash barriers and bridge deck pavement includes the following steps: Step 1: Provide the above-mentioned combined structure of prefabricated crash barriers and bridge deck pavement; Step 2: Install two rows of prefabricated crash barriers on both sides of the top surface of the concrete bridge; Step 3: Set the prefabricated bridge deck in the middle of the top surface of the concrete bridge, and set the prefabricated bridge deck and the two rows of prefabricated anti-collision walls at intervals to form the first post-pouring strip; Step 4: Connect the prefabricated bridge deck to the two rows of prefabricated crash barriers using connectors; Step 5: Pour the first post-pouring strip to enclose the connector.

[0012] Compared with the prior art, the advantages of the present invention are: By setting up prefabricated crash barriers and bridge deck paving, it is convenient to construct crash barriers and bridge deck paving simultaneously, which improves construction efficiency and avoids the use of large machinery such as formwork trolleys, thus saving costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a cross-sectional view of the combined structure of the prefabricated anti-collision barrier wall and bridge deck pavement of the present invention.

[0015] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0016] Figure 3 This is a top view of the combined structure of the prefabricated anti-collision barrier and bridge deck pavement of the present invention.

[0017] In the diagram: 1. Concrete bridge; 2. Bedding layer; 3. Prefabricated bridge deck; 4. Prefabricated crash barrier; 5. First post-cast strip; 6. Connector; 601. First reserved reinforcement bar; 602. Second reserved reinforcement bar. Detailed Implementation

[0018] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0019] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the combined structure of the prefabricated crash barrier and bridge deck pavement of the present invention and its construction method.

[0020] Please see Figures 1-3 As shown, the combined structure of the prefabricated crash barrier and bridge deck pavement includes: Two rows of prefabricated crash barriers 4 are respectively installed on both sides of the top surface of the concrete bridge 1; The prefabricated bridge deck 3 is set in the middle of the top surface of the concrete bridge 1, and a first post-cast strip 5 is formed between the prefabricated bridge deck 3 and the two rows of prefabricated anti-collision walls 4. The connector 6, located within the corresponding first post-cast strip 5, is used to connect the prefabricated bridge deck 3 to the corresponding row of prefabricated crash barriers 4.

[0021] By setting up prefabricated crash barriers and bridge deck paving, it is convenient to construct crash barriers and bridge deck paving simultaneously, which improves construction efficiency and avoids the use of large machinery such as formwork trolleys, thus saving costs.

[0022] Specifically, the prefabricated bridge deck 3 is composed of multiple prefabricated bridge deck units, which are spaced apart along the length of the concrete bridge 1. A second post-cast strip is formed between two adjacent prefabricated bridge deck units, and adjacent prefabricated bridge deck units are connected by steel reinforcement. The second post-cast strip is connected to the first post-cast strip 5.

[0023] By setting up this second post-pouring strip, it is convenient to embed the reinforcing steel bars in the post-pouring concrete, and to connect multiple prefabricated bridge deck units to form a whole.

[0024] Preferably, the top surface of the concrete bridge 1 is covered with a grout layer 2, and the prefabricated crash barrier 4 and the prefabricated bridge deck 3 are both installed on the grout layer 2.

[0025] By setting the grout layer 2, the unevenness of the top of the concrete bridge 1 is compensated, and the prefabricated crash barrier 4 and the prefabricated bridge deck 3 are laid on the grout layer 2 to facilitate uniform force transmission and ensure the installation levelness.

[0026] Specifically, the grout layer 2 is also equipped with shims for fine-tuning the levelness of the prefabricated crash barrier 4 or the prefabricated bridge deck 3.

[0027] By setting this shim, adjustments can be made based on the site conditions. The shim can be placed at a point with a lower elevation to compensate for the height difference and ensure the levelness of the component installation.

[0028] Preferably, each row of the prefabricated crash barrier 4 is composed of multiple prefabricated crash barrier units joined together end to end.

[0029] Because the entire row of prefabricated crash barriers 4 has a large span and is difficult to hoist, it is divided into multiple prefabricated crash barrier units to facilitate transportation and hoisting.

[0030] Preferably, each of the prefabricated crash barrier units has a protrusion / groove at its front end and a groove / protrusion at its rear end for the protrusion / groove of adjacent prefabricated crash barrier units to engage and connect.

[0031] By setting grooves and protrusions on each of the prefabricated crash barrier units, the splicing stability of adjacent prefabricated crash barrier units is improved.

[0032] Preferably, the joints between adjacent prefabricated crash barrier units are coated with sealant.

[0033] By applying the sealant between adjacent prefabricated crash barrier units, water leakage at the joints is prevented, thus improving the overall structural integrity.

[0034] Specifically, the sealant is a sealing mortar.

[0035] Preferably, the connector 6 includes a first reserved rib 601 and a second reserved rib 602. One end of the first reserved rib 601 is embedded in the prefabricated bridge deck 3, and the other end extends toward the corresponding row of the prefabricated anti-collision barrier 4. One end of the second reserved rib 602 is embedded in the prefabricated anti-collision barrier 4, and the other end extends toward the prefabricated bridge deck 3 and is used to overlap with the first reserved rib 601.

[0036] By setting the first reserved reinforcement 601 and the second reserved reinforcement 602, the prefabricated crash barrier 4 and the prefabricated bridge deck 3 are connected to form an integral whole, thereby improving the overall structural stability.

[0037] Preferably, there are multiple first reserved bars 601 and multiple second reserved bars 602, and the multiple first reserved bars 601 and multiple second reserved bars 602 are spaced apart along the length direction of the concrete bridge 1.

[0038] By setting multiple first reserved ribs 601 and multiple second reserved ribs 602, the connection strength between the prefabricated anti-collision barrier 4 and the prefabricated bridge deck 3 is improved, ensuring the overall stability of the structure.

[0039] A construction method for combining prefabricated crash barriers and bridge deck pavement includes the following steps: Step 1: Provide the above-mentioned combined structure of prefabricated crash barriers and bridge deck pavement; Step 2: Install two rows of prefabricated crash barriers 4 on both sides of the top surface of the concrete bridge 1; Step 3: Set the prefabricated bridge deck 3 in the middle of the top surface of the concrete bridge 1, so that the prefabricated bridge deck 3 and the two rows of prefabricated anti-collision walls 4 are spaced apart to form the first post-pouring strip 5. Step 4: Connect the prefabricated bridge deck 3 to the two rows of prefabricated crash barriers 4 using connectors 6; Step 5: Pour the first post-pouring strip 5, and pour the connector 6 inside.

[0040] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A combined structure of prefabricated crash barrier and bridge deck pavement, characterized in that, include: Two rows of prefabricated crash barriers are installed on both sides of the top surface of the concrete bridge. The prefabricated bridge deck is set in the middle of the top surface of the concrete bridge, and a first post-pouring strip is formed between the prefabricated bridge deck and the two rows of prefabricated anti-collision retaining walls. The connector, located within the corresponding first post-cast strip, is used to connect the prefabricated bridge deck to the corresponding row of prefabricated crash barriers.

2. The combined structure of prefabricated crash barrier and bridge deck pavement as described in claim 1, characterized in that, The top surface of the concrete bridge is covered with a grout layer, and the prefabricated crash barrier and the prefabricated bridge deck are both installed on the grout layer.

3. The combined structure of prefabricated crash barrier and bridge deck pavement as described in claim 1, characterized in that, Each row of prefabricated crash barriers is composed of multiple prefabricated crash barrier units joined together end to end.

4. The combined structure of prefabricated crash barrier and bridge deck pavement as described in claim 3, characterized in that, Each of the prefabricated crash barrier units has a protrusion / groove at its front end and a groove / protrusion at its rear end for the protrusion / groove of adjacent prefabricated crash barrier units to engage and connect.

5. The combined structure of prefabricated crash barrier and bridge deck pavement as described in claim 3, characterized in that, The joints between adjacent prefabricated crash barrier units are coated with sealant.

6. The combined structure of prefabricated crash barrier and bridge deck pavement as described in claim 1, characterized in that, The connector includes a first reserved rib and a second reserved rib. One end of the first reserved rib is embedded in the prefabricated bridge deck, and the other end extends toward the corresponding row of prefabricated anti-collision barriers. One end of the second reserved rib is embedded in the prefabricated anti-collision barriers, and the other end extends toward the prefabricated bridge deck and is used to overlap with the first reserved rib.

7. The combined structure of prefabricated crash barrier and bridge deck pavement as described in claim 6, characterized in that, There are multiple first reserved bars and multiple second reserved bars, and the multiple first reserved bars and multiple second reserved bars are spaced apart along the length direction of the concrete bridge.

8. A method for combining prefabricated crash barriers and bridge deck pavement, characterized in that, Including the following steps: Step 1: Provide a combined structure of prefabricated crash barrier and bridge deck pavement as described in claim 1; Step 2: Install two rows of prefabricated crash barriers on both sides of the top surface of the concrete bridge; Step 3: Set the prefabricated bridge deck in the middle of the top surface of the concrete bridge, and set the prefabricated bridge deck and the two rows of prefabricated anti-collision walls at intervals to form the first post-pouring strip; Step 4: Connect the prefabricated bridge deck to the two rows of prefabricated crash barriers using connectors; Step 5: Pour the first post-pouring strip to enclose the connector.

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