Construction fence and passable road arrangement method based on road reconstruction project

Abstract

This invention provides a method for arranging construction barriers and maintaining road access in road reconstruction projects, including steps such as the construction of the substructure of a new bridge, the construction of the cast-in-place superstructure of the new bridge, and the road width conversion construction. This invention is characterized by its simplicity, adaptability to construction sites, versatility, and good applicability, and is worthy of widespread promotion.

Description

Technical Field

[0001] This invention relates to the field of road reconstruction engineering construction technology, specifically a method for arranging construction enclosures and maintaining access roads in road reconstruction projects. Background Technology

[0002] As my country's urbanization level continues to rise, the existing roads in more and more cities can no longer meet the growing traffic demand, leading to an increase in road reconstruction and expansion projects. In particular, the combination of widening old roads and building new bridges has become the preferred option for many cities.

[0003] However, road reconstruction and expansion in cities often make it difficult to completely interrupt traffic and close the construction site. It is necessary to reserve access roads for social vehicles. How to scientifically and rationally arrange the construction site fences and access roads to ensure that the progress of the project is not affected while meeting the needs of social vehicles to the greatest extent has become an urgent problem for engineering technicians. Summary of the Invention

[0004] In view of the above-mentioned prior art, the present invention proposes a method for arranging construction enclosures and maintaining access roads based on road reconstruction projects.

[0005] This invention provides a method for arranging construction enclosures and maintaining access roads in road reconstruction projects, comprising the following steps:

[0006] S1. Construction of the substructure of the new bridge: The substructure of the new bridge includes the new bridge pile foundation, the new bridge abutment and the new bridge pier. The new bridge pier is located on the upper end of the new bridge abutment, and the new bridge abutment is located on the upper end of the new bridge pile foundation. When setting up the construction enclosure, the excavation edge line of the foundation pit of the new bridge abutment is used as the control line for the layout of the construction enclosure.

[0007] S2. Construction of the cast-in-place beams of the new bridge superstructure: Erect support frames and scaffolding to carry out the construction of the cast-in-place beams of the new bridge superstructure. The width of the support frames and scaffolding after erection is greater than the top width of the cast-in-place beams of the new bridge superstructure.

[0008] S3. Ground road reconstruction and lane switching construction: The ground road is divided into two lanes, namely the left lane and the right lane, according to the two opposite directions of vehicle travel. Lane switching construction is carried out. After the right lane is completed, the construction fence of the right lane is moved to the left lane. After the left lane is closed, the left lane is constructed. The access road is set on the right lane that has been completed. If the left lane is constructed first, the construction must be switched to the right lane after the left lane is completed.

[0009] Preferably, in S1, the location of the temporary access road on the cross-section is determined based on the relative position of the newly constructed bridge abutment and the existing ground road, and there are two scenarios: Scenario 1: The centerline of the newly constructed bridge abutment is basically consistent with the centerline of the existing ground road. In this case, after leaving construction space for the substructure of the newly constructed bridge, if there is still a distance from the edge of the existing ground road, the middle of the road cross-section is closed off by construction barriers, and the existing ground roads or newly constructed temporary roads are used on both sides as temporary access roads for social vehicles. Both temporary access roads are set up with a single-lane motor vehicle lane + a single-lane non-motor vehicle lane; Scenario 2: The centerline of the new bridge abutment deviates significantly from the centerline of the existing ground road, noticeably leaning towards one side of the existing ground road. In this case, a layout of half construction enclosure and half reserved vehicle access road is adopted. The construction enclosure closes the half of the road adjacent to the substructure of the new bridge, and the other half of the existing ground road is used as the access road. The access road is set up as a two-way traffic lane for motor vehicles and a two-way non-motor vehicle lane. The construction enclosure on the side away from the access road is set up directly according to the land boundary line, which reserves sufficient working space for the construction site while avoiding relocation during the construction of the cast-in-place beams of the new bridge.

[0010] Preferably, in S2, after the construction of the substructure of the new bridge is completed, the construction fence is moved. The relocation of the construction fence is divided into two cases corresponding to S1: Case 1: The construction fence in S1 is expanded outward along the road width direction, leaving the width for the support frame and scaffolding erection of the cast-in-place beam of the new bridge. After the construction fence is expanded outward, it encroaches on the original access road. At this time, the motor vehicle lane can no longer pass, leaving only the access road for non-motor vehicle traffic; Case 2: The construction fence on the side adjacent to the access road is expanded outward towards the access road, leaving the width for the support frame and scaffolding erection of the cast-in-place beam of the new bridge. After the construction fence on this side is expanded outward, it encroaches on part of the original access road. At this time, a single-lane motor vehicle lane + a single-lane non-motor vehicle lane can be left as an access road. The construction fence on the side away from the access road is no longer moved. In S1, sufficient space has been reserved for the construction of the cast-in-place beam of the new bridge.

[0011] Preferably, in S3, after the construction of the cast-in-place beam of the new bridge is completed, all the support frames and scaffolding used for the cast-in-place beam of the new bridge are removed, leaving usable space under the bridge again. S3 corresponds to S2 in two situations: Situation 1: The construction fence on one side of S2 is extended outward along the road width to the land boundary line, while the construction fence on the opposite side is extended inward along the road width to the edge of the new bridge pier. This forms a working surface within the fence that can be used for half of the ground road construction. The outer side of the extended construction fence leaves a lane for social vehicles, which is set up as a two-way traffic lane for motor vehicles + a two-way non-motor vehicle lane. After the first half of the ground road is completed, the construction fence is moved to the other half in the same way to complete the other half. In the first scenario, the construction of the ground road is carried out in two ways. The completed half of the ground road is opened as a temporary access road for public vehicles, configured as a two-lane road for both motor vehicles and a two-lane road for non-motorized vehicles. In the second scenario, the construction barriers on the side closest to the temporary access road are moved inwards to the edge of the new bridge pier, while the barriers on the other side remain stationary. In this way, the temporary access road for S3 can be restored to a two-lane road for both motor vehicles and a two-lane road for non-motorized vehicles. The half of the road previously closed by the construction barriers continues construction. Once this half is completed, the construction barriers are moved to the remaining half in the same manner, allowing construction to begin on the remaining half. The completed half of the ground road is then opened as a temporary access road for public vehicles, configured as a two-lane road for both motor vehicles and a two-lane road for non-motorized vehicles.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a method for arranging construction enclosures and access roads based on road reconstruction projects, which can effectively guide road reconstruction projects, especially those involving the expansion of existing ground roads and the construction of new bridges. It has the characteristics of being simple and clear, suitable for construction sites, highly versatile, and well-applicable, and is worth promoting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the construction enclosure and access road layout in scenario one of embodiment S1 of the present invention.

[0014] Figure 2 This is a schematic diagram of the construction enclosure and access road layout in scenario one of embodiment S1 of the present invention.

[0015] Figure 3 This is a schematic diagram of the construction enclosure and access road layout in Case 2 of Embodiment S1 of the present invention.

[0016] Figure 4 This is a schematic diagram of the construction enclosure and access road layout in Case 2 of Embodiment S1 of the present invention.

[0017] Figure 5 This is a schematic diagram of the construction enclosure and access road layout in Case 1 of Embodiment S2 of the present invention.

[0018] Figure 6 This is a schematic diagram of the construction enclosure and access road layout in scenario one of embodiment S2 of the present invention.

[0019] Figure 7 This is a schematic diagram of the construction enclosure and access road layout in scenario two of embodiment S2 of the present invention.

[0020] Figure 8 This is a schematic diagram of the construction enclosure and access road layout in scenario two of embodiment S2 of the present invention.

[0021] Figure 9 This is a schematic diagram of the construction site enclosure and access road layout in scenario one of embodiment S3 of the present invention (construction on the right side).

[0022] Figure 10 This is a schematic diagram of the construction enclosure and access road layout in scenario one of embodiment S3 of the present invention (construction on the right side).

[0023] Figure 11 This is a schematic diagram of the construction site enclosure and access road layout in scenario one of embodiment S3 of the present invention (construction on the left side).

[0024] Figure 12 This is a schematic diagram of the construction enclosure and access road layout in scenario one of embodiment S3 of the present invention (construction on the left side).

[0025] Figure 13 This is a schematic diagram of the construction enclosure and access road layout in scenario two of embodiment S3 of the present invention (construction on the right side).

[0026] Figure 14 This is a schematic diagram of the construction enclosure and access road layout in scenario two of embodiment S3 of the present invention (construction on the right side).

[0027] Figure 15 This is a schematic diagram of the construction enclosure and access road layout in scenario two of embodiment S3 of the present invention (construction on the left side).

[0028] Figure 16 This is a schematic diagram of the construction enclosure and access road layout in scenario two of embodiment S3 of the present invention (construction on the left side).

[0029] Figure 17 This is a schematic diagram showing the relative positions of the newly built bridge abutment and the existing ground road under scenario one.

[0030] Figure 18This is a schematic diagram showing the relative positions of the newly built bridge abutment and the existing ground road under scenario two.

[0031] In the diagram, 1. Construction enclosure; 2. New bridge abutment; 3. New bridge pier; 4. Road access control; 5. New bridge superstructure cast-in-place beam; 6. Land boundary line; 7. Existing ground road edge line; 8. Center line of new bridge abutment; 9. Center line of existing ground road. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations. Example

[0033] A method for arranging construction enclosures and access roads in road reconstruction projects, such as... Figure 1-18 As shown, it includes the following steps:

[0034] S1. Construction of the substructure of the new bridge: The substructure of the new bridge includes the new bridge pile foundation, the new bridge abutment 2 and the new bridge pier 3. The new bridge pier 3 is located on the upper end of the new bridge abutment 2. The new bridge abutment 2 is located on the upper end of the new bridge pile foundation. The construction of the new bridge abutment 2 occupies the largest working area in the substructure of the new bridge. When setting up the construction enclosure 1, the excavation edge line of the foundation pit of the new bridge abutment 2 is used as the control line for the layout of the construction enclosure.

[0035] The location of the temporary access road 4 on the cross section is determined based on the relative position of the newly built bridge abutment 2 and the existing ground road, and is divided into two cases: Case 1: The center line 8 of the newly built bridge abutment is basically consistent with the center line 9 of the existing ground road. In this case, after leaving construction space for the substructure of the newly built bridge, if there is still a distance from the edge line 7 of the existing ground road, the middle of the road cross section is closed off by construction barriers 1, and the existing ground roads or newly built temporary roads are used on both sides as temporary access roads for social vehicles. Both temporary access roads 4 are set up as a single-lane motor vehicle lane + a single-lane non-motor vehicle lane; Case 2: The newly built bridge abutment 2... The centerline 8 deviates significantly from the centerline 9 of the existing ground road, clearly leaning towards one of the existing ground roads. In this case, a layout of half construction enclosure and half reserved vehicle access road is adopted. Construction enclosure 1 closes the half of the road adjacent to the substructure of the new bridge, and the other half of the existing ground road is used as access road 4. Access road 4 is set up as a two-way traffic lane for motor vehicles and a two-way non-motor vehicle lane. The construction enclosure 1 on the side away from access road 4 is set up directly according to the land boundary line 6, which reserves sufficient working space for the construction site and avoids relocation during the construction of the cast-in-place beam 5 of the new bridge.

[0036] S2. Construction of the cast-in-place beam of the new bridge: Erect a ground-supported frame and a scaffold for workers to operate, and carry out the construction of the cast-in-place beam 5 of the new bridge. The width of the support frame and scaffold after erection is greater than the top width of the cast-in-place beam 5 of the new bridge.

[0037] After the construction of the substructure of the new bridge is completed, the construction enclosure 1 will be moved. The relocation of the construction enclosure 1 is divided into two situations corresponding to S1: Situation 1: The construction enclosure 1 in S1 is expanded outward along the road width direction, leaving the width for the support frame and scaffolding of the cast-in-place beam 5 of the new bridge. After the construction enclosure 1 is expanded outward, it encroaches on the original access road 4. At this time, the motor vehicle lane is no longer passable, leaving only the access road 4 for non-motor vehicle traffic. Situation 2: The construction enclosure 1 on the side adjacent to the access road 4 is expanded outward towards the access road 4 side, leaving the width for the support frame and scaffolding of the cast-in-place beam 5 of the new bridge. After the construction enclosure 1 on this side is expanded outward, it encroaches on part of the original access road 4. At this time, the access road 4 can be maintained with a single-lane motor vehicle lane and a single-lane non-motor vehicle lane. The construction enclosure 1 on the side away from the access road 4 will not be moved. In S1, sufficient space has been reserved for the construction of the cast-in-place beam 5 of the new bridge.

[0038] S3. Ground road reconstruction and lane switching construction: The ground road is divided into two lanes according to the two opposite directions of vehicle travel, namely the left lane and the right lane, and lane switching construction is carried out. The lane switching construction is to move the construction fence 1 of the right lane to the left lane after the right lane is completed, close the left lane and then carry out the left lane construction. The access road 4 is set on the right lane that has been completed. If the left lane is constructed first, it is also necessary to switch to the right lane after the left lane is completed.

[0039] After the construction of the new bridge superstructure cast-in-place beam 5 is completed, all the support frames and scaffolding used for the new bridge superstructure cast-in-place beam 5 are removed, leaving usable space under the bridge again. S3 and S2 correspond to two situations: Situation 1: The construction enclosure 1 on one side of S2 is extended outward along the road width to the land boundary line 6, while the construction enclosure 1 on the opposite side is recessed inward along the road width to the edge of the new bridge pier 3. This forms a working surface within the enclosure that can be used for half (left or right) ground road construction. The outer side of the recessed construction enclosure 1 leaves a lane 4 for social vehicles. The lane 4 is set up as a two-way two-lane motor vehicle lane + two-lane non-motor vehicle lane. After the first half (left or right) ground road is completed, the construction enclosure 1 is moved to the other half (right or left) in the same way to complete the construction of the other half (right or left) ground road. Scenario 1: Once the construction of the completed half (left or right) of the road is completed, it will be opened as a temporary access road for public vehicles, set up in the form of two-way traffic with two lanes for motor vehicles and two lanes for non-motor vehicles. Scenario 2: The construction fence 1 on the side closest to the temporary access road 4 will be moved inward to the edge of the newly built bridge pier 3, while the construction fence 1 on the other side remains stationary. In this way, the temporary access road 4 of S3 can be restored to the form of two-way traffic with two lanes for motor vehicles and two lanes for non-motor vehicles. The half (left or right) of the road closed by the construction fence 1 will continue to be constructed. Once the construction of this half (left or right) is completed, the construction fence 1 will be moved to the remaining half (right or left) in the same way, and the construction of the remaining half (right or left) of the road can then begin. The completed half (left or right) of the road will be opened as a temporary access road for public vehicles, set up in the form of two-way traffic with two lanes for motor vehicles and two lanes for non-motor vehicles.

[0040] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent substitutions made using the present invention's specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of the present invention.

Claims

1. A method for arranging construction enclosures and access roads for road reconstruction projects, characterized in that, Includes the following steps: S1. Construction of the substructure of the new bridge: The substructure of the new bridge includes the new bridge pile foundation, the new bridge abutment and the new bridge pier. The new bridge pier is located on the upper end of the new bridge abutment, and the new bridge abutment is located on the upper end of the new bridge pile foundation. When setting up the construction enclosure, the excavation edge line of the foundation pit of the new bridge abutment is used as the control line for the layout of the construction enclosure. The location of the temporary access road on the cross-section is determined based on the relative position of the newly constructed bridge abutment and the existing ground road, and is divided into two cases: Case 1: The centerline of the newly constructed bridge abutment is basically consistent with the centerline of the existing ground road. In this case, after leaving construction space for the substructure of the newly constructed bridge, if there is still a distance from the edge of the existing ground road, the middle of the road cross-section is closed off by construction barriers, and the existing ground roads or newly constructed temporary roads are used on both sides as temporary access roads for social vehicles. Both temporary access roads are set up with a single lane for motor vehicles and a single lane for non-motor vehicles; Case 2: The newly constructed bridge... The centerline of the abutment deviates significantly from the centerline of the existing ground road, noticeably leaning towards one side of the existing ground road. In this case, a layout of half construction enclosure and half reserved vehicle access road is adopted. The construction enclosure closes the half of the road adjacent to the substructure of the new bridge, and the other half of the existing ground road is used as the access road. The access road is set up as a two-way traffic lane for motor vehicles and a two-way non-motor vehicle lane. The construction enclosure on the side away from the access road is set up directly according to the land boundary line, which reserves sufficient working space for the construction site while avoiding relocation during the construction of the cast-in-place beams of the new bridge. S2. Construction of the cast-in-place beams of the new bridge superstructure: Erect support frames and scaffolding to carry out the construction of the cast-in-place beams of the new bridge superstructure. The width of the support frames and scaffolding after erection is greater than the top width of the cast-in-place beams of the new bridge superstructure. S3. Ground road reconstruction and lane switching construction: The ground road is divided into two lanes, namely the left lane and the right lane, according to the two opposite directions of vehicle travel. Lane switching construction is carried out. After the right lane is completed, the construction fence of the right lane is moved to the left lane. After the left lane is closed, the left lane is constructed. The access road is set on the right lane that has been completed. If the left lane is constructed first, the construction must be switched to the right lane after the left lane is completed.

2. The method for arranging construction enclosures and maintaining access roads based on road reconstruction projects as described in claim 1, characterized in that, In S2, after the completion of the substructure construction of the new bridge, the construction fence is relocated. The relocation of the construction fence is divided into two situations corresponding to S1: Situation 1: The construction fence in S1 is expanded outward along the road width direction, leaving the width for the support frame and scaffolding erection of the cast-in-place beam of the new bridge. After the construction fence is expanded outward, it encroaches on the original access road. At this time, the motor vehicle lane is no longer passable, leaving only the access road for non-motor vehicle traffic. Situation 2: The construction fence on the side adjacent to the access road is expanded outward towards the access road, leaving the width for the support frame and scaffolding erection of the cast-in-place beam of the new bridge. After the construction fence on this side is expanded outward, it encroaches on part of the original access road. At this time, a single-lane motor vehicle lane + a single-lane non-motor vehicle lane can be left as an access road. The construction fence on the side away from the access road will not be moved. In S1, sufficient space has been reserved for the construction of the cast-in-place beam of the new bridge.

3. The method for arranging construction enclosures and maintaining access roads based on road reconstruction projects as described in claim 2, characterized in that, In S3, after the construction of the cast-in-place beams of the newly built bridge is completed, all the support frames and scaffolding used for the cast-in-place beams of the newly built bridge are removed, leaving usable space under the bridge again. S3 corresponds to S2 in two scenarios: Scenario 1: The construction fence on one side of S2 is extended outward along the road width to the land boundary line, while the construction fence on the opposite side is extended inward along the road width to the edge of the newly built bridge pier. This forms a working surface within the fence that can be used for half of the ground road construction. A lane for social vehicles is left outside the extended construction fence. The lane is set up as a two-way traffic lane for motor vehicles + a two-way non-motor vehicle lane. After the first half of the ground road is completed, the construction fence is moved to the other half in the same way to complete the other half of the ground road. For the construction of the surface road, the completed half of the surface road is opened as a temporary access road for social vehicles, set up in the form of two-way traffic with two lanes for motor vehicles and two lanes for non-motor vehicles; Scenario 2: The construction fence on the side closest to the temporary access road is moved inward to the edge of the new bridge pier, while the construction fence on the other side remains unchanged. In this way, the temporary access road of S3 can be restored to the form of two-way traffic with two lanes for motor vehicles and two lanes for non-motor vehicles. The half of the surface road closed by the construction fence continues to be constructed. When the construction of this half is completed, the construction fence is moved to the remaining half in the same way, and the construction of the remaining half of the surface road can be carried out. The completed half of the surface road is opened as a temporary access road for social vehicles, set up in the form of two-way traffic with two lanes for motor vehicles and two lanes for non-motor vehicles.

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