TWI592543B - Road rigid paving plate support structure - Google Patents

Description

Road rigid pavement support structure

The invention relates to a road rigid paving plate support structure in the form of a raft, which provides the water source function of the roadbed soil with water permeability and water retention, and can adjust the pavement elevation to meet the flatness requirement of the pavement at any time, and can respond to rapid construction and maintenance. Replacement needs.

Rigid pavements have better bearing capacity than flexible pavements, so some high-traffic traffic routes, including airport runways, specific sections of highways, bridges, and docks, generally use rigid pavements. The traditional rigid paving is paved on site, the construction quality is affected by the weather, and the compaction of the subgrade soil or the base layer is strict. Taiwan weather is wet and rainy. When the roadbed is flooded, the basement layer will be destroyed and the surface concrete will be broken. The maintenance is very inconvenient and seriously affects the traffic flow.

In the design of the thickness of the rigid pavement, it is necessary to check the central and edge warping stress caused by the heat expansion and contraction. The load and the strain of the vehicle load are in the center of the plate, the central edge, and the corner of the plate. The thickness of the plate is uniform and cannot be simultaneously Taking into account the different stress and strain strength requirements of different sizes, the overall thickness is increased by safety considerations, and the construction cost is increased.

When rigid pavement occurs in the concrete of the surface layer, local rut damage or slab joint rupture, mechanical equipment is required to remove the damaged section. Re-filling the concrete, but often found that the maintenance effect is difficult to last, unless the overall section knocked out redo, labor and time.

Even if the new road is constructed by using the slab section, although the hoisting is quick and convenient, the construction of the subgrade soil and the basal layer takes a long time, and the construction period cannot be shortened. Moreover, due to the fact that the conventional rigid plates and the slabs cannot be removed quickly after laying, the underground pipe trenching operation will be hindered, and the repair of the partially rigid paving slabs after the pipe trench backfilling is difficult, which seriously affects the paving flatness.

Although relevant literature on road rigid pavement has been proposed, such as Taiwan Invention Patent Bulletin No. I317772, the bulletin discloses a rigid pavement maintenance method, which mainly involves the use of the concept of planting reinforcement and the implantation of the repair section. Appropriate reinforcing materials are arranged in order to increase the combination of maintenance materials and concrete pavement, and reduce the cracking of maintenance materials. However, the invention cannot solve the fundamental problem of the destruction of the rigid surface layer caused by the softening of the submerged soil, the base layer and the underlying material. Moreover, the maintenance of the surface layer still needs to be constructed and maintained on site, and the construction period is limited to be limited, which affects the smoothness of road traffic.

In view of the problems and shortcomings of the prior art, the main object of the present invention is to provide a road rigid pavement support structure, which replaces the traditional road rigid pavement construction method with the pre-stress method, and can completely eradicate the damage caused by the road bottom immersion.

Another object of the present invention is to provide a road rigid paving plate support structure, which has the effects of effectively reducing the construction period of the road base layer and the surface layer, and has the function of permeable and water retaining to improve the urban heat island effect, and can achieve environmental protection, rapid maintenance and no maintenance. Affect the significant advantages of transportation.

Another object of the present invention is to provide a road rigid paving plate support structure, which is designed to enhance the shear strength and avoid the failure mechanical cracking type for the gradient cross section of the end of the male and female unit grille beams. (Opening mode) crack.

A further object of the present invention is to provide a road rigid paving plate support structure, in which the joint structure of the male and female unit ends of the stencil block is stacked on the upper and lower sides of the beam, thereby avoiding the common conventional support structure in the wheel passing through the adjacent unit joints. When the load on the pedestal and the plate is discontinuous, the impact force is reduced and the seam maintenance period is extended.

Still another object of the present invention is to provide a road rigid pavement support structure, which is supported by the adjustable base under the support portion of the male unit and the female unit, and the flatness of the pavement needs to be adjusted to be lifted and lowered. The elevation of the block male and female units to improve the flatness of the joints of the male and female units.

In order to achieve the above and other objects, the road rigid pavement support structure according to the present invention mainly comprises: a slab, an adjustable base, a bench base, and a base level batching; wherein the slab comprises a male unit and a parent unit Each male unit and each female unit is composed of a reinforced concrete surface layer and a bottom plate of a grid. The surface layer of the surface layer is provided with a water-permeable hole, which can discharge the surface runoff of the pavement layer to the lower layer, and borrow The surface layer is subjected to the vehicle tire load and transmitted to the lower slab.

The male unit and the female unit of the 預鑄 block are respectively composed of pre-stressed concrete two-way grating beams with bending and shear strength; the bottom layer of the grid of the 預鑄 块 block corresponds to the lower part of the support at both ends ,by The longitudinal grille beam forms a pair of convex lower lap joints; the bottom layer of the grid of the 預鑄 块 母 parent unit corresponds to the upper part of the support portions at both ends, and a pair of convex upper laps are formed by the transverse grille beams The interface; the lower lap interface and the upper lap interface are complementary to each other to be overlapped on one another.

Furthermore, the bottom plate of the grid of the male unit and the female unit protrudes downward at the longitudinal end ends to form a pair of support portions, and an angular arch structure is formed between the two support portions.

The adjustable base comprises a base and a plurality of height adjusting devices supported under the overlapping interface between the male unit and the female unit of the cymbal block, each set of lifting mechanism being composed of an outer sleeve and an inner screw. The outer sleeve is embedded in the base plate, and the outer sleeve includes an internal thread that engages with the screw and can rise or fall as the screw rotates.

The bench top base includes a base plate and a box-shaped wall body that is carried under the adjustable base, the box wall being isolated from the outside of the adjustable base.

The base layer leveling comprises a water-permeable bottom layer pellet and a base layer pellet, wherein the water-permeable bottom layer pellet is mainly composed of a particle size of #3/8~1 inch, and the pellet is mixed with cement slurry to be filled under the crucible block. The bottom layer; the base layer is mixed with sand and gravel, and the particle size is maintained between 4.75 and 19 mm, and is filled between the slab and the permeable bottom granule.

According to this, the stencil section adopts the permeable paving and permeable base layer design, which can make the subgrade soil have the function of water permeable and water retaining, so as to effectively conserve the water source and improve the heat island effect; the adjustable pedestal can flexibly adjust the height according to the road paving flatness requirement. It can meet the requirements of Luping project to ensure the use of passers-by rights; and the support structure is designed according to the thickness and the required design. The amount of traffic can be calculated to provide sufficient surfacing capacity and transmitted to the pedestal and benchtop foundation via the 預鑄 preloaded girder beam structure to ensure structural safety. In addition, if there is any pavement damage, it is only necessary to hoist and replace the 預鑄 預鑄 ,, construction and maintenance is convenient and fast.

1‧‧‧預鑄版

10‧‧‧ Public unit

10’‧‧‧ mother unit

11‧‧‧Face version

110‧‧‧through hole

12, 12'‧‧‧ grille bottom version

120, 120’‧‧‧ longitudinal grille beams

121, 121'‧‧‧ transverse grille beams

122‧‧‧ lattice trough

13, 13' ‧ ‧ support

14‧‧‧Lower interface

14'‧‧‧Upper interface

2‧‧‧Adjustable base

20‧‧‧ Pedestal

21‧‧‧ Height adjustment device

211‧‧‧Outer casing

212‧‧‧Inner screw

3‧‧‧ Benchtop Foundation

31‧‧‧ Basic Edition

32‧‧‧Box wall

4‧‧‧Base level ingredients

41‧‧‧Water-permeable bottom pellets

42‧‧‧Basic pellets

1 is a perspective view showing a preferred embodiment of a road rigid pavement support structure of the present invention; FIG. 2 is a perspective view showing an exploded state of a male unit of a stencil; and FIG. 3 is a perspective view showing an exploded state of a slab master unit; Figure 4 is a view showing the reinforcement of the surface layer of the male (female) unit of the 預鑄 plate; Figure 5 is a partial sectional perspective view showing the underlying version of the grid of the 預鑄 block; An imaginary diagram of the longitudinal grid beam of the underlying version of the male (female) unit grid; Figure 5b is an imaginary diagram of the transverse grid beam of the underlying version of the slab of the male (female) unit grid; Figure 6 shows An exploded view of the adjustable base and the table base; Figure 7 is a view showing the reinforcement of the base; Figure 8 is a partial perspective view showing the support structure of the jaw; and Figure 9 is a view of the traditional joint of the finite element analysis. The distribution state diagram of the stress, which shows: (a) the figure shows the load at the left of the joint; (b) the figure shows the load at the center of the joint; (c) the figure shows the load at the right of the joint; Figure 10 is a finite element analysis of the S33 stress distribution state of the joint of the present invention, which shows: (a) the figure is the load at the left of the joint; (b) the figure is the center load of the joint; (c) the figure is the seam The load is on the right; the 11th is a comparison of the S33 stress showing the conventional joint and the support structure of the present invention; the 12th is a flow chart showing the implementation steps of the support structure of the road rigid pavement of the present invention; and the 13th is the 12th Figure 14 is a detailed flow chart of the environmental analysis steps of the implementation process; Figure 14 is a detailed flow chart showing the system design steps of the implementation flow of Figure 12; and Figure 15 is a system manufacturing and construction process planning showing the implementation process of Figure 12. Detailed flow chart of the analysis step.

The technical features of the present invention are further described in the following with reference to the accompanying drawings.

First, a preferred embodiment of the road rigid pavement support structure of the present invention will be described with reference to Figs. As shown in the figure, it mainly includes a stencil block 1, an adjustable pedestal 2, a bench top base 3, and a base level ingredient 4 and the like.

Wherein, the plaque block 1 comprises a male unit 10 and a female unit 10', and each male unit 10 and each female unit 10' is composed of a reinforced concrete surface layer 11 and a grid bottom plate 12, 12'. And in the surface layer 11 A plurality of water permeable holes 110 are provided in the cross section. The stencil 1 topsheet 11 is primarily intended to withstand the vehicle tire load and transfer it to the underlying grid version 12, 12' (as shown in Figures 2 and 3). The design of the reinforcement of the surface layer 11 is as shown in Fig. 4.

The underlay plate 12 (12') is composed of a plurality of longitudinal grating beams 120 (120') and a plurality of transverse grating beams 121 (121') which are perpendicularly intersected each other to form a grid structure, and are formed between the two The plurality of lattice grooves 122 correspond to the plurality of water-permeable holes 110 of the surface plate 11 (as shown in FIG. 5, the illustration is only represented by the bottom plate of the common unit, and the mother unit is the same).

Each of the longitudinal grating beams 120 of the plurality of longitudinal grating beams 120 is provided with a plurality of transverse water-permeable holes 1201 communicating with the corresponding lattice grooves 122; and each of the transverse grating beams 121 of the plurality of transverse grating beams 121 is provided. A plurality of longitudinally permeable holes 1211 communicate with the corresponding lattice slots 122 (as shown in the imaginary diagrams of Figures 5a and 5b).

Furthermore, the underlying plates 12, 12' of the slab 1 male unit 10 and the female unit 10' are respectively protruded downward at the longitudinal end ends to form a pair of supporting portions 13, 13', and in two An angular arch structure is formed between the support portions 13, 13'. Moreover, the bottom layer 12 of the grid of the slab 1 unit 10 corresponds to the lower portion of the support portions 13 at both ends, forming a pair of convex lower lap joints 14; The gate bottom plate 12' corresponds to a pair of convex upper overlapping interfaces 14' at the upper portions of the both end support portions 13'.

The lower lap joint 14 and the upper lap joint 14' are complementary to each other to be overlapped one on top of the other. This method of splicing up and down can avoid the phenomenon that the load of the conventional support structure on the pedestal and the slab is discontinuous when the wheel passes through the joint of each adjacent unit, so as to reduce the impact force and Extend the length of repair of the seam. For the gradient section of the end of the grid beam, the angle arch design is adopted to strengthen the shear strength and avoid the failure of the mechanical strain cracking (Mode-1) crack.

Referring to Figures 6, 7, and 8, the adjustable base 2 is supported below the support portions 13, 13' of the male unit 10 and the female unit 10' of the first block 1 to bear the first block 1 The shear forces transmitted by the male and female units 10, 10' end engagement formation. The adjustable base 2 includes a base 20 and a plurality of height adjusting devices 21, and the plurality of height adjusting devices 21 are disposed on the base 20 by a 3-point method or a 4-point method, for example, through the plurality of height adjusting devices 21 The elevation of the base 20 can be adjusted up and down. The design of the reinforcing bars and pre-forced steel rafts of the susceptor 20 is as shown in Fig. 7.

Each height adjusting device 21 includes an outer sleeve 211 and an inner screw 212. The outer sleeve 211 has an internal thread and is implanted at a predetermined point of the base 20 when the base 20 is closed. The inner screw 212 By screwing with the internal thread, the elevation of the male unit 10 and the female unit 10' can be indirectly adjusted via the forward and reverse rotation of the inner screw 212. Preferably, the inner screw 212 is provided with a biasing portion or the like of a conventional polygonal shape, of course, but is not limited thereto.

The table base 3 is carried under the adjustable base 2, and the table base 3 includes a bottom base plate 31 and a box wall 32, and the box wall 32 is disposed above the base plate 31. The box-shaped wall body 32 has four side walls facing to form a receiving space corresponding to the surrounding of the base 20 for isolating the roadbed soil and the water-permeable pellets, and the base 20 can be freely raised and lowered.

According to the invention, the substrate level ingredient 4 comprises a water permeable bottom The layered pellets 41 and a base layer of pellets 42, preferably the water-permeable bottom layer pellets 41 are mainly composed of a particle size of #3/8 to 1 inch, and the pellets can be directly mixed with cement under heavy traffic load conditions. Slurry, making permeable concrete to provide sufficient bearing capacity; preferably, the base layer granule 42 is mixed with sand and gravel to maintain the particle size between 4.75 and 19 mm, and is filled in the slab block 1 and Between the permeable bottom layer pellets 41 (as shown in Figure 1).

Preferably, the thickness and Young's modulus of the water-permeable base layer used for the heavy-duty heavy tire with a ground pressure of 9.1 kg/cm ² are as shown in the attached table, and the actual pellets should be in the numerical range after the blending. The basal layer pellets may be constructed by permeable bricks or on-site paving, subject to the requirements of Schedule 1.

Referring to FIG. 9 again, according to the plate support structure of the present invention, the finite element software SAP2000 is used to verify the joint of the 預鑄 預鑄 block, and the distribution state of the stress of the S33 under heavy load is received, as shown in (a) and (b). Figure (c) shows the distribution of stress from the left side of the joint, the center of the joint, and the right side of the joint, and the distribution of the stress of the traditional joint S33 in Figure 10, as shown in Figure (a) and Figure (b). Figure (c); in contrast, the vertical stress of the bearing surface under the joint of the Invent joint of the present invention is significantly smaller than the conventional joint structure (Conventional ioint). Further, as shown in Fig. 11, the analysis and comparison of the support structure of the present invention with the conventional joint structure prove that the present invention can effectively reduce the unevenness caused by the seam of the surface layer. The force is at least 50%. Further, the size of each unit of the present structure is designed according to actual needs, and is not particularly limited.

Furthermore, in the implementation process of the above-mentioned block support structure, the building information model (BIM) software is used for planning and design, and the structural analysis software is connected for mechanical analysis and strength check, and then the unit manufacturing and process are performed. Schedule scheduling and quality inspection. The process, as shown in Figure 12, includes: (1) environmental analysis, (2) system design, (3) system manufacturing and construction process planning analysis, (4) unit manufacturing, (5) site construction, ( 6) Steps such as on-site inspection and adjustment, which will be further explained below.

As shown in Figure 13, the detailed process of "Environmental Analysis" includes: drainage facility survey, rainfall intensity analysis, pavement runoff analysis, infiltration rate and soil permeability coefficient analysis, and rainwater retention analysis.

As shown in Figure 14, the detailed process of the "System Design" step includes: BIM software 3D modeling, surface layer layout design, grid beam design, permeable base layer design, height adjustable 預鑄 pedestal design, pre- Casting base design, and bench foundation construction. Among them, the ability of BIM software to link 3D building models to various analysis tools can improve the accuracy. The above components basically need to meet the following conditions: determine the design traffic volume (18kips ESAL), determine the pavement load, structural analysis, structural design, And design bending moment shear and torsion reinforcement.

As shown in Figure 15, the detailed operation procedures of the "System Manufacturing and Construction Process Planning Analysis" steps include: BIM-3D model file, various types of unit components and parts codes, component and parts conflict check, system material quantity list Export, system component drawing and spare parts drawing are exported, Unit price analysis of each project, and system cost assessment analysis. Among them, the BIM-3D model file includes: construction process planning analysis, establishing work item operation, setting job type, setting project productivity, setting sequence relationship before and after each work item, assigning each unit component and spare parts to each work item. , the work of each work item analysis and remittance period, and the system remittance construction plan and other operations.

In summary, the pre-stress structure unit, including the stencil block, the adjustable pedestal, the bench foundation, etc., are all transported to the road construction site for assembly after completion of the manufacturing, except that the basic components need to be buried and coordinated on site. The permeable base layer 4 is laid on site, and the other units can be hoisted and assembled in sequence, and the operation is fast and free from rain and rain, which can shorten a large number of construction periods.

The above is only a preferred embodiment of the present invention, and is not limited to the details disclosed in the drawings and the description, and there are still many variations to those of ordinary skill in the art to which the present invention pertains, that is, without departing from the present disclosure. The equivalent variations and modifications of the scope of the invention are still within the scope of the invention.

1‧‧‧預鑄版

10‧‧‧ Public unit

10’‧‧‧ mother unit

11‧‧‧Face version

110‧‧‧through hole

12, 12'‧‧‧ grille bottom version

13, 13' ‧ ‧ support

2‧‧‧Adjustable base

3‧‧‧ Benchtop Foundation

31‧‧‧ Basic Edition

32‧‧‧Box wall

4‧‧‧Base level ingredients

41‧‧‧Water-permeable bottom pellets

42‧‧‧Basic pellets

Claims (7)

A road rigid paving plate support structure comprising: a plaque block, an adjustable base, a bench base, and a base level batching; wherein the slab comprises a male unit and a female unit, each male unit and each The parent unit is composed of a reinforced concrete surface layer and a grid bottom plate, and a plurality of water-permeable holes are arranged on the surface layer section; the male unit and the two ends of the mother unit each have a corresponding counterpart The interface is connected to each other one by one; the adjustable base comprises a base and a plurality of height adjusting devices supported under the overlapping interface between the male unit and the female unit of the first version, each set of lifting The mechanism is composed of an outer sleeve and an inner screw, and the outer sleeve is embedded in the base plate, and the outer sleeve includes an internal thread engaged with the screw, and can rise or fall with the rotation direction of the screw; The table base comprises a base plate and a box-shaped wall body, the base plate is carried under the adjustable base, the box wall is isolated on the outer side of the adjustable base; and the base layer is matched The utility model comprises a water-permeable bottom layer pellet and a base layer pellet, wherein the water-permeable bottom layer pellet is mainly composed of a particle size of #3/8~1 inch, and the pellet is mixed with cement slurry to fill the bottom layer below the crucible block; The base layer pellets are mixed with sand and gravel, and the particle size is maintained between 4.75 and 19 mm, and is filled between the crucible plate and the pervious bottom layer pellet. The road rigid pavement support structure as described in item 1 of the patent application scope The bottom plate of the grid is composed of a plurality of longitudinal grating beams and a plurality of transverse grating beams, which intersect perpendicularly to each other to form a grid structure, and a plurality of lattice grooves are formed between the two to correspond to the plural of the surface layer A water permeable hole. The road rigid pavement support structure of claim 2, wherein each longitudinal grille beam of the plurality of longitudinal grille beams is provided with a plurality of transverse water permeable holes communicating with the corresponding lattice grooves; and the plurality of transverse grids Each transverse grid beam of the grid beam is provided with a plurality of longitudinal water permeable holes communicating with the corresponding lattice grooves. The road rigid pavement support structure according to claim 1, wherein the bottom plate of the male unit and the parent unit of the stencil block protrude downward at the longitudinal end ends to form a pair of support portions, and An angular arch structure is formed between the two support portions. The road rigid paving plate support structure according to claim 2, wherein the bottom plate of the common block of the 預鑄 block forms a pair of convex lower lap joints corresponding to the lower portions of the support portions at both ends; The bottom layer of the grid of the casting block mother unit forms a pair of convex upper overlapping interfaces corresponding to the upper portions of the supporting portions at both ends; the lower overlapping interface and the upper overlapping interface complement each other to be overlapped one upon another together. The road rigid paving plate support structure according to claim 5, wherein the adjustable base is supported under the support portion of the male and female units of the cymbal block; the adjustable base is connected to the plurality of height adjusting devices The elevation of the male and female units of the 預鑄 block can be adjusted up and down. The road rigid pavement support structure as described in item 6 of the patent application scope The plurality of height adjusting devices are arranged on the adjustable base by a 3-point method or a 4-point method; each height adjusting device comprises an outer sleeve and an inner screw, the outer sleeve has an internal thread and is planted on the base At a predetermined point of the seat, the inner screw is screwed with the internal thread, and the elevation of the base can be adjusted by the forward and reverse rotation of the inner screw.