Scroll type UHPC concrete composite board ground hardening process and device

Abstract

The invention relates to the technical field of engineering construction, in particular to a scroll type UHPC concrete composite board ground hardening technology and utensil which comprises a UHPC concrete composite board and a storage tool used for driving the UHPC concrete composite board to be laid and taken back. The UHPC concrete composite board comprises a first board, a standard board, a lengthened board, a shortened board and a tail board. Each UHPC concrete composite board is composed of a face board, a bottom board, hinge teeth and shear pins. The UHPC concrete composite boards are connected through hinges. Large-area long-distance ground hardening mechanical operation and recycling mechanical operation are achieved, and the construction efficiency is high; the reel type UHPC concrete composite board can be recycled for multiple times, and generation of construction waste and loss of steel are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a scroll-type UHPC concrete composite board ground hardening process and apparatus. Background Art

[0002] During the construction process, temporary construction access roads, temporary facility site hardening and other temporary ground hardening are often required. The relevant fees are generally charged on a daily, square meter or base percentage basis, which has a great impact on the economic efficiency of the project construction.

[0003] The traditional ground hardening process generally uses concrete for long-term use and rented steel plates for short-term use. The bearing capacity of the ground hardened by concrete technology is better and can meet the construction needs. The disadvantage is that a large amount of concrete fragments and other construction waste are generated during the demolition process. The steel plate hardening process has a fast laying speed and weak bearing capacity. The deformation affects the recycling function. In addition, due to the small size of the steel plate, a large amount of steel plates are needed, which makes on-site management difficult. Concrete ground hardening and steel plate ground hardening also have a common problem, that is, poor economic efficiency.

[0004] Therefore, engineering construction urgently needs a scroll-type UHPC concrete composite panel ground hardening process and equipment developed in combination with emerging materials to overcome the above problems. Summary of the invention

[0005] The object of the present invention is to provide a scroll-type UHPC concrete composite panel ground hardening process and apparatus to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A scroll-type UHPC concrete composite slab ground hardening process, for large-area ground hardening, including:

[0008] S1: Position and lay out the site that needs to be hardened and determine the hardened area. The results of positioning and laying out include: site turning points and red lines;

[0009] S2: According to the terrain characteristics of the hardening site, the longitudinal and transverse hardening directions of the hardening site are planned; the angle between the longitudinal and transverse hardening directions is 60°-120°; the hardening is carried out in the same direction from high to low, and the adjacent two hardened ground surfaces are side by side without any gaps;

[0010] S3: Harden the site to remove water and drain, fill the underground tree holes and pits, level the site, and level the ground with a slope of 2% to 3% according to the site's terrain characteristics and soil quality;

[0011] S4: Lay 2-3cm medium-coarse sand as the ground leveling layer;

[0012] S5: Lay the lower layer of UHPC concrete composite slabs along the longitudinal direction of the site. Multiple UHPC concrete composite slabs in the same direction are laid in the same direction, from high to low, and two adjacent UHPC concrete composite slabs are laid side by side without leaving any gaps;

[0013] S6: Lay the upper UHPC concrete composite slab along the horizontal direction of the site. Multiple UHPC concrete composite slabs in the same direction are laid in the same direction, from high to low. Two adjacent UHPC concrete composite slabs are laid side by side without leaving any gaps, forming a vertical and horizontal bidirectional double-layer ground hardening structure;

[0014] S7: The hardened site is completed, forming a hardened ground with natural drainage at the base and a high bearing capacity on the surface;

[0015] S8: After the site is used, the two layers of UHPC concrete composite panels are rolled up in reverse order; the coarse sand on the ground is cleaned to restore the original appearance of the site, and the ground hardening operation is completed.

[0016] A scroll-type UHPC concrete composite slab ground hardening process for long-distance ground hardening, including:

[0017] S1: Position and lay out the route that needs to be hardened and determine the hardening area. The positioning and laying out results include: the starting point, turning point, end point, red line and center line of the hardening route;

[0018] S2: Plan the hardening route according to the terrain characteristics of the hardening route;

[0019] S3: Harden the site to remove water and drain, fill underground tree holes and pits, level the site, and level the ground with a horizontal slope of 2% to 3% according to the site's topographical characteristics and soil quality;

[0020] S4: Lay 2-3cm medium-coarse sand as the roadbed leveling layer;

[0021] S5: Lay the lower layer of UHPC concrete composite slabs along the direction of the route. When multiple UHPC concrete composite slabs need to be laid in the same direction, the laying should be carried out in the same direction, and two adjacent UHPC concrete composite slabs should be laid side by side without leaving any gaps. After one UHPC concrete composite slab is laid, the next UHPC concrete composite slab will be laid in the subsequent section until the UHPC concrete composite slabs that need to be laid on the hardened ground are connected;

[0022] S6: The hardened site is completed, forming a hardened access road with natural drainage at the base and a high bearing capacity on the surface;

[0023] S7: After the site is used, the UHPC concrete composite board is rolled up in reverse; the coarse sand on the ground is cleaned to restore the original appearance of the site, and the ground hardening operation is completed.

[0024] As a further solution of the present invention: the longitudinal and transverse hardening directions in S2 are perpendicular to each other.

[0025] A reel-type UHPC concrete composite board ground hardening device comprises a UHPC concrete composite board and a storage tool for driving the UHPC concrete composite board to be laid and retracted; the UHPC concrete composite board comprises a first board, a standard board, an extended board, a shortened board and a tail board; a single UHPC concrete composite board consists of a face plate, a bottom plate, hinge teeth and shear nails; each UHPC concrete composite board is connected by a hinge.

[0026] As a further solution of the present invention: the bottom plate is a Q235 steel plate, and the shear nails and the teeth are made of steel.

[0027] As a further solution of the present invention: the shear nails are welded on the base plate in the shape of plum blossom piles, and the panel is cast on the base plate with the assistance of a mold using UHPC high-performance concrete. The cast panel fits the base plate and wraps the shear nails.

[0028] As a further solution of the present invention: the storage tool includes a reel, a sprocket, and a round shaft; the reel is provided with a hook for hooking the hanging groove provided on the first plate, and round shafts are provided at both ends of the reel, and the sprocket is fixed on the round shaft.

[0029] Compared with the prior art, the beneficial effects of the present invention are: realizing large-area and long-distance ground hardening mechanical operations, recycling mechanical operations, and high construction efficiency; the main tool, the scroll-type UHPC concrete composite board, has high strength and resistance to negative bending moments, can be used multiple times, and has economic benefits; reducing the generation of construction waste and the loss of steel, and realizing the sustainable development of engineering construction; the bearing capacity of the composite structure meets the construction needs, the double-layer laying force transmission decomposition is reasonable, and the ground hardening quality is reliable; it is conducive to large-scale factory prefabrication and realizes prefabricated construction; reducing the labor intensity of workers and reducing construction safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0031] Figure 2 This is a schematic diagram of the paving operation of this embodiment;

[0032] Figure 3 This is a elevation view of the present embodiment;

[0033] Figure 4 This is a schematic diagram of panel connection in this embodiment;

[0034] Figure 5 This is a schematic diagram of the scroll of this embodiment;

[0035] Figure 6 This is a schematic diagram of the hinge of this embodiment;

[0036] Figure 7 This is a schematic diagram of large-area site hardening operations in this embodiment.

[0037] Among them: 1 first plate, 1.1 hanging groove, 2 standard plate, 2.1 panel, 2.2 bottom plate, 2.3 hinge teeth, 2.4 shear nails, 3 extension plate, 4 shortening plate, 5 tail plate, 6 hinge, 6.1 hinge plate, 6.2 hinge shaft, 7 reel, 7.1 hook, 8 sprocket, 9 round shaft, 10 transmission chain, 11 hanger, 12 hanging beam. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] See also Figure 1-Figure 7 The present invention provides a reel-type UHPC concrete composite plate ground hardening device, which structure includes a UHPC concrete composite plate and a storage tool for driving the UHPC concrete composite plate to be laid and retracted; the UHPC concrete composite plate includes a first plate 1, a standard plate 2, an extended plate 3, a shortened plate 4, and a tail plate 5; a single UHPC concrete composite plate is composed of a panel 2.1, a bottom plate 2.2, hinge teeth 2.3, and shear nails 2.4; each UHPC concrete composite plate is connected by a hinge 6.

[0040] The bottom plate 2.2 is a 2 cm thick Q235 steel plate. The shear nails 2.4 and the teeth 2.3 are made of steel. The shear nails 2.4 are 2 cm high and welded to the bottom plate 2.2 in a plum blossom shape. The teeth 2.3 are welded to both ends of the bottom plate 2.2. The panel 2.1 is made of 5.5 cm thick UHPC high-performance concrete (strength UC120) and is cast on the bottom plate 2.2 with the assistance of a mold. After casting, the panel 2.1 is close to the bottom plate 2.2 and completely wraps the shear nails 2.4.

[0041] Preferably, the designed UHPC concrete composite board has ten layers, the standard board 2 of the first layer is 7.5 cm thick, the upper surface is 4 m wide and 14 cm long, the standard board 2 of the second layer is 7.5 cm thick, the upper surface is 4 m wide and 20.3 cm long, and so on. The length of each standard board 2 is longer than that of the upper standard board 2, and the lengthened board 3 of each layer is 10.1 cm longer than the length of the standard board 2 of the current layer, and the shortened board of each layer is 10.1 cm shorter than the length of the standard board 2 of the current layer. There is no shortened board in the first layer, and there is no lengthened board 3 in the tenth layer.

[0042] The hinge 6 of the device is composed of a hinge plate 6.1 and a hinge shaft 6.2, which are made of steel. The hinge shaft 6.2 passes through the hinge teeth 2.3 and can rotate inside the hinge teeth 2.3. Both ends of the hinge shaft 6.2 are connected to the hinge plate 6.1 to prevent the hinge shaft 6.2 from falling off.

[0043] After the UHPC concrete composite panels are manufactured, the connection order is the first panel 1, the first layer of standard panels 2 (5 panels), the first layer of extended panels 3, the second layer of shortened panels 4, the second layer of standard panels 2 (6 panels), the second layer of extended panels 3, the third layer of shortened panels 4… the last layer of shortened panels 4, the last layer of standard panels 2 (6 panels), the last panel 5. The panels are connected by hinges 6 to form a concrete paving material that is 4 meters wide, 33.7 meters long and weighs 37.5 tons.

[0044] The storage tool is composed of a reel 7, a sprocket 8, and a circular shaft 9. The reel 7 is a heptagon (a regular octagon with one corner filled to a right angle, preferably 19 cm high, 19 cm wide, and 4 m long). The longer side of the cross section of the reel 7 is the same width as the first board 1. The reel 7 is provided with a hook 7.1, which is used to hook the hanging groove 1.1 opened on the first board 1 to hang the first board 1 on the reel 7. The reel 7 is provided with a circular shaft 9 at both ends, and the sprocket 8 is fixed on the circular shaft 9. When the sprocket 8 rotates, the reel 7 can rotate with it, driving the panel 2.1 to be laid or retracted.

[0045] The transmission chain 10, the hanger 11, and the hanging beam 12 constitute the installation and disassembly device of the UHPC concrete composite panel. The hanging beam 12 is installed on the transport vehicle or machinery, and the transport vehicle or machinery provides power for it. The hanging beam 12 can rotate horizontally; the hanger 11 is installed at the end of the hanging beam 12, connected to the circular shaft 9, and suspends the UHPC concrete composite panel off the ground. The working capacity of the hanger 11 is 60T, achieving a safety factor of 1.5 times. The transmission chain 10 is installed at the end of the hanging beam 12 and is connected to the sprocket 8. The transmission chain 10 drives the sprocket 8 to rotate.

[0046] UHPC concrete composite slabs can be laid in a single layer in one direction to form a long strip of hardened ground to meet the needs of temporary access roads. One roll-type UHPC concrete composite slab can realize a two-way single-lane temporary access road. When a larger width is required, such as a two-way four-lane road, two roll-type UHPC concrete composite slabs can be laid side by side to form an 8-meter wide temporary access road.

[0047] Embodiment The ground hardening of the scroll-type UHPC concrete composite panel can also be laid in double layers and in both directions. The load on the upper panel can be transferred to 6 to 20 lower panels for joint load-bearing. The double-layer structure is reasonably dispersed to improve the structural bearing capacity. When the length difference in different directions of the site is large, the lower layer is laid in the longer direction and the upper layer is laid in the shorter direction, which can reduce the number of transverse joints of the upper panel 2.1.

[0048] The following specifically introduces the process of ground hardening of the scroll-type UHPC concrete composite panel. Example 1 is for large-area ground hardening:

[0049] S1: Position and lay out the site that needs to be hardened and determine the hardened area. The positioning and laying out results should include: site turning points, red lines and other major signs, and the accuracy should meet construction needs.

[0050] S2: According to the terrain characteristics of the hardened site, plan the longitudinal and transverse hardening directions of the hardened site. The longitudinal and transverse hardening directions should be perpendicular to each other. If they cannot be perpendicular, the angle between the longitudinal and transverse hardening directions should not be less than 60° or greater than 120°; the same-direction hardening should be carried out in the same direction, preferably from high to low, and the two adjacent hardened surfaces should be side by side without gaps. For example: the terrain is higher in the southeast direction, the longitudinal hardening is from south to north, the transverse hardening is from east to west, and the adjacent hardened surfaces are closely arranged.

[0051] S3: The hardened site shall be drained and water shall be removed, underground tree holes and pits shall be filled and compacted, and the site shall be leveled with a slope of 2% to 3% according to the site terrain characteristics and soil quality.

[0052] S4: Lay 2-3cm of medium-coarse sand as the ground leveling layer.

[0053] S5: Lay the lower layer of UHPC concrete composite slabs along the longitudinal direction of the site. Multiple UHPC concrete composite slabs in the same direction should be laid in the same direction, preferably from high to low. Two adjacent UHPC concrete composite slabs should be laid side by side without leaving any gaps between them.

[0054] S6: The upper layer of UHPC concrete composite slabs shall be laid horizontally along the site. Multiple layers of UHPC concrete composite slabs in the same direction shall be laid in the same direction, preferably from high to low. Two adjacent layers of UHPC concrete composite slabs shall be laid side by side without leaving any gaps between them, forming a vertical and horizontal bidirectional double-layer ground hardening structure.

[0055] S7: The hardened site is completed, forming a natural drainage base and a hardened surface with a high bearing capacity, which can meet the construction needs of arranging temporary facilities, storing materials or finished products, and parking vehicles.

[0056] S8: After the site is used, the two layers of UHPC concrete composite panels are rolled up in reverse order. The coarse sand on the ground is cleaned to restore the original appearance of the site, and the ground hardening operation is completed.

[0057] Example 2 for long distance ground hardening:

[0058] S1: Position and lay out the route that needs to be hardened and determine the hardening area. The positioning and laying out results should include: the starting point, turning point, end point, red line, center line and other major signs of the hardening route. The accuracy should meet the construction needs.

[0059] S2: Plan the hardened route according to the terrain characteristics of the hardened route.

[0060] S3: The hardened site shall be drained and water shall be removed, underground tree holes and pits shall be filled and compacted, and the site shall be leveled with a horizontal slope of 2% to 3% according to the site terrain characteristics and soil quality.

[0061] S4: Lay 2-3cm of medium-coarse sand as the roadbed leveling layer.

[0062] S5: Lay the lower layer of UHPC concrete composite slab along the direction of the route. If the width is wide and multiple UHPC concrete composite slabs need to be laid in the same direction, the laying should be carried out in the same direction, and the two adjacent UHPC concrete composite slabs should be laid side by side without leaving a gap between them. After one UHPC concrete composite slab is laid, the next UHPC concrete composite slab will continue to be laid in the subsequent section until the UHPC concrete composite slabs that need to be laid on the hardened ground are connected.

[0063] S6: The hardened site is completed, forming a natural drainage base and a hardened access road with a high bearing capacity on the surface, which can meet the passage needs of temporary vehicles, machinery, personnel, etc.

[0064] S7: After the site is used, the UHPC concrete composite board is rolled up in reverse. The coarse sand on the ground is cleaned up to restore the original appearance of the site, and the ground hardening operation is completed.

[0065] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A scroll-type UHPC concrete composite board ground hardening process, characterized by: For large-area ground hardening, including: S1: Position and lay out the site that needs to be hardened and determine the hardened area. The results of positioning and laying out include: site turning points and red lines; S2: According to the terrain characteristics of the hardening site, the longitudinal and transverse hardening directions of the hardening site are planned; the angle between the longitudinal and transverse hardening directions is 60°-120°; the hardening is carried out in the same direction from high to low, and the adjacent two hardened ground surfaces are side by side without any gaps; S3: Harden the site to remove water and drain, fill the underground tree holes and pits, level the site, and level the ground with a slope of 2% to 3% according to the site's terrain characteristics and soil quality; S4: Lay 2-3cm medium-coarse sand as the ground leveling layer; S5: Lay the lower layer of UHPC concrete composite slabs along the longitudinal direction of the site. Multiple UHPC concrete composite slabs in the same direction are laid in the same direction, from high to low, and two adjacent UHPC concrete composite slabs are laid side by side without leaving any gaps; S6: Lay the upper UHPC concrete composite slab along the horizontal direction of the site. Multiple UHPC concrete composite slabs in the same direction are laid in the same direction, from high to low. Two adjacent UHPC concrete composite slabs are laid side by side without leaving any gaps, forming a vertical and horizontal bidirectional double-layer ground hardening structure; S7: The hardened site is completed, forming a hardened ground with natural drainage at the base and a high bearing capacity on the surface; S8: After the site is used, the two layers of UHPC concrete composite panels are rolled up in reverse order; the coarse sand on the ground is cleaned to restore the original appearance of the site, and the ground hardening operation is completed.

2. A scroll-type UHPC concrete composite board ground hardening process, characterized by: For long distance ground hardening, including: S1: Position and lay out the route that needs to be hardened and determine the hardening area. The positioning and laying out results include: the starting point, turning point, end point, red line and center line of the hardening route; S2: Plan the hardening route according to the terrain characteristics of the hardening route; S3: Harden the site to remove water and drain, fill underground tree holes and pits, level the site, and level the ground with a horizontal slope of 2% to 3% according to the site's topographical characteristics and soil quality; S4: Lay 2-3cm medium-coarse sand as the roadbed leveling layer; S5: Lay the lower layer of UHPC concrete composite slabs along the direction of the route. When multiple UHPC concrete composite slabs need to be laid in the same direction, the laying should be carried out in the same direction, and two adjacent UHPC concrete composite slabs should be laid side by side without leaving any gaps. After one UHPC concrete composite slab is laid, the next UHPC concrete composite slab will be laid in the subsequent section until the UHPC concrete composite slabs that need to be laid on the hardened ground are connected; S6: The hardened site is completed, forming a hardened access road with natural drainage at the base and a high bearing capacity on the surface; S7: After the site is used, the UHPC concrete composite board is rolled up in reverse; the coarse sand on the ground is cleaned to restore the original appearance of the site, and the ground hardening operation is completed.

3. A scroll-type UHPC concrete composite panel ground hardening process according to claim 1, characterized in that: The longitudinal and transverse hardening directions in S2 are perpendicular to each other.

4. A reel-type UHPC concrete composite panel floor hardening device, characterized in that: It includes UHPC concrete composite panels and storage tools for driving the laying and retraction of UHPC concrete composite panels; the UHPC concrete composite panels include the first panel, the standard panel, the extended panel, the shortened panel and the tail panel; a single UHPC concrete composite panel is composed of a panel, a bottom panel, hinge teeth and shear nails; each UHPC concrete composite panel is connected by a hinge.

5. The scroll-type UHPC concrete composite panel floor hardening device according to claim 4, characterized in that: The bottom plate is made of Q235 steel plate, and the shear nails and teeth are made of steel.

6. The scroll-type UHPC concrete composite panel floor hardening device according to claim 4, characterized in that: The anti-shear nails are welded on the bottom plate in the shape of plum blossom piles, and the panel is cast on the bottom plate with the assistance of a mold using UHPC high-performance concrete. The cast panel fits the bottom plate and wraps the anti-shear nails.

7. The scroll-type UHPC concrete composite panel floor hardening device according to claim 4, characterized in that: The storage tool comprises a reel, a sprocket and a round shaft; a hook is arranged on the reel for hooking a hanging groove provided on the first plate, round shafts are arranged at both ends of the reel, and the sprocket is fixed on the round shafts.

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