Pouring formwork for bridge engineering
By using electric heating tape to heat the pouring formwork in bridge engineering and combining it with the design of the insulation layer, the problem of weakened concrete hydration reaction under low winter temperatures was solved, achieving efficient concrete heating and improved construction efficiency.
Patent Information
- Application Number
- CN202520287108.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-22
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-22
AI Technical Summary
In the low-temperature environment of winter, the hydration reaction kinetics of traditional concrete pouring formwork are weakened, resulting in a reduced rate of hydration product formation. In addition, existing heating methods have problems such as high energy consumption, uneven temperature distribution, and low construction efficiency.
A casting template consisting of a baffle mechanism, a base, and a support mechanism is used. Electric heating tape is used in conjunction with an insulation layer design to ensure uniform heat transfer and reduce heat loss. Concrete is poured into the casting cavity by combining these components.
It improves concrete heating efficiency, reduces heat loss, enhances construction quality and economy, and achieves sustainability in winter construction.
Smart Images
Figure CN223853191U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge construction field especially relates to a bridge engineering is with pouring formwork. BACKGROUND
[0002] In winter low temperature environment, the application of traditional concrete pouring formwork faces significant technical bottleneck. Because the ambient temperature is usually lower than the optimum temperature range (20±5℃) required for cement hydration reaction, the hydration reaction kinetics of concrete inside the formwork system is significantly weakened, resulting in a reduction of about 60%-80% in the generation rate of hydration products. Experimental data show that when the ambient temperature is lower than 5℃, the 3-day compressive strength of ordinary Portland cement concrete can only reach 30%-40% of that under standard curing conditions; when the temperature inside the formwork drops below freezing point, the volume expansion caused by phase change of free water will cause microcracks in the unhydrated cement stone structure, resulting in irreversible strength loss.
[0003] The prior art mostly uses external heating or covering insulation materials to cope with it, but there are systematic defects such as high energy consumption (heat loss rate can reach 40%-60%), uneven temperature field distribution (temperature difference can reach more than 15℃) and reduced construction efficiency (process time consumption increases by 30%-50%), which are difficult to realize the economy and sustainability of winter construction under the premise of ensuring engineering quality. SUMMARY
[0004] The utility model aims at providing a kind of bridge engineering is with pouring formwork, effectively promote the thermal efficiency of formwork for cement to promote temperature.
[0005] The utility model discloses a kind of bridge engineering is with pouring formwork, and the technical scheme it adopts is:
[0006] Including baffle mechanism, base and support mechanism, the baffle mechanism includes bottom plate and insulation layer, the side of the bottom plate is provided with serpentine reciprocating insertion slot, the slot is arranged with electric heat tracing band, the both ends of the insulation layer are fixedly connected with first reinforcing rib, two the first reinforcing rib is connected with the top and bottom of bottom plate respectively, the side of the insulation layer covers bottom plate, the one end of the support mechanism is connected with bottom plate through insulation layer, the baffle mechanism is placed on the top of base, the edge of the baffle mechanism is close to base, the other end of the support mechanism is detachably connected with base.
[0007] As a preferred scheme, the baffle mechanism further includes isolation layer, the both ends of the isolation layer are fixedly connected with second reinforcing rib, two the second reinforcing rib is connected with the top and bottom of bottom plate respectively, the other side of the isolation layer covers bottom plate.
[0008] As a preferred scheme, one side of the bottom plate is embedded with a temperature measuring device, the temperature measuring device penetrates through the heat preservation layer, and the temperature measuring device is electrically connected with the electric heat tracing belt.
[0009] As a preferred scheme, a mounting area is arranged on the top of the base, and a cushion block is detachably connected in the mounting area, and the cushion block is in contact with the heat preservation layer.
[0010] As a preferred scheme, a connecting base is arranged on the top of the base, and the other end of the supporting mechanism is detachably connected with the connecting base.
[0011] As a preferred scheme, the supporting mechanism comprises a lead screw and a rocker arm, one end of the lead screw is rotatably connected with a first connecting plate, the first connecting plate is connected with the bottom plate through the heat preservation layer, one end of the rocker arm is rotatably connected with a nut, the other end of the lead screw is connected with the nut in a matched mode, the other end of the rocker arm is rotatably connected with a second connecting plate, and the second connecting plate is detachably connected with the connecting base.
[0012] As a preferred scheme, a limiting block is arranged on the second connecting plate, a limiting slot is arranged on the connecting base, and the limiting block is slidably inserted into the limiting slot.
[0013] The bridge engineering pouring formwork disclosed by the utility model has the advantages that:
[0014] When the device is used, four pouring formwork assemblies can be combined to form a cuboid pouring cavity between the four baffle mechanisms, and after pouring concrete into the cavity during construction, the liquid concrete will be in full contact with the baffle mechanisms and form a rudiment of the pier.
[0015] The electric heat tracing belt is started by power supply, and the generated heat is first conducted to the baffle mechanism, and then the heat energy is uniformly transmitted to the concrete medium through the heat conduction of the baffle mechanism; in order to improve the heat efficiency, a heat preservation layer is arranged on one side of the bottom plate where the electric heat tracing belt is arranged, the heat preservation structure can effectively prevent the direct contact of external cold air with the bottom plate, thereby reducing the heat loss of the heat generated by the electric heat tracing belt, the double heat preservation design significantly reduces the overall heat loss of the formwork system, and the heating efficiency of the pouring formwork is improved. ACCURACY OF DRAWINGS
[0016] Figure 1 is a structural schematic view of the bridge engineering pouring formwork.
[0017] Figure 2 is an installation schematic view of the heat preservation layer and the isolation layer of the bridge engineering pouring formwork.
[0018] Figure 3 is an installation schematic view of the heat preservation layer and the isolation layer of the bridge engineering pouring formwork.
[0019] Figure 4 is a bottom plate structure schematic view of the pouring formwork for bridge engineering.
[0020] Figure 5 is an installation schematic view of the supporting mechanism and the cushion block of the pouring formwork for bridge engineering.
[0021] Figure 6 is a structure schematic view of the cushion block of the pouring formwork for bridge engineering being replaced by different angles. DETAILED DESCRIPTION
[0022] The utility model makes further elaboration and illustration to the utility model by combining specific embodiments and the drawings of the specification:
[0023] Please refer to Figures 1-4 .
[0024] The utility model discloses a pouring formwork for bridge engineering, including baffle mechanism 1, base 2 and supporting mechanism 3;
[0025] Baffle mechanism 1 includes bottom plate 11, heat preservation layer 12 and isolation layer 13;The bottom plate 11 of this embodiment is preferably made of aluminum alloy, and the bottom plate 11 made of aluminum alloy has higher heat conduction performance, and also can reduce the weight of the bottom plate 11, which is convenient for carrying and layout during construction;The side of bottom plate 11 is provided with serpentine reciprocating insertion groove, so that the groove can be more evenly distributed on one side of bottom plate 11;The groove is provided with electric heat tracing band 111, and the electric heat tracing band 111 is in contact with the inner wall of the groove, and the both ends of the electric heat tracing band 111 are extended with expansion wires, and the expansion wires are electrically connected with terminals, and an external power supply is electrically connected with one of the terminals, so that the electric heat tracing band 111 is connected with the power supply.
[0026] When four templates are combined, four electric heat tracing bands 111 are electrically connected through terminals, so that the external power supply can sequentially connect the power supply to the four electric heat tracing bands 111.
[0027] Further, the side of bottom plate 11 is embedded with temperature measuring device 112, and the temperature measuring device 112 is electrically connected with the electric heat tracing band 111, so that the external power supply can connect the power supply to the temperature measuring device 112 through the electric heat tracing band 111, so that the electric heat tracing band 111 and the temperature measuring device 112 are synchronously operated, and the temperature measuring device 112 is used for monitoring the temperature of bottom plate 11.
[0028] The two ends of the heat preservation layer 12 are fixedly connected with first reinforcing ribs 121, and the two first reinforcing ribs 121 are detachably connected with the top and the bottom of the bottom plate 11, so that workers can detach the heat preservation layer 12 and replace new components when the electric heating tape 111 is damaged; the heat preservation layer 12 covers one side of the bottom plate 11, the temperature measuring device 112 penetrates through the heat preservation layer 12, so that workers can check the temperature value of the bottom plate 11 monitored by the temperature measuring device 112, and the heat preservation layer 12 wraps the electric heating tape 111 in the groove of the bottom plate 11, thereby reducing heat loss of the electric heating tape 111.
[0029] The isolation layer 13 is preferably an aluminum alloy sheet. The isolation layer 13 made of the aluminum alloy sheet has high heat conduction performance and can be folded by 90° to cover the other side of the bottom plate 11, so that the isolation layer 13 isolates the bottom plate 11 from the concrete. The two ends of the isolation layer 13 are fixedly connected with second reinforcing ribs 131, and the two second reinforcing ribs 131 are detachably connected with the top and the bottom of the bottom plate 11. The isolation layer 13 covers the other side of the bottom plate 11. When four template combinations are used, a cuboid pouring cavity is constructed between the four baffle mechanisms 1, and concrete is poured into the cavity during construction. The concrete is in direct contact with the isolation layer 13, the isolation layer 13 isolates the bottom plate 11 from the concrete, reduces corrosion and wear of the bottom plate 11 by the concrete, and only needs to detach the severely worn isolation layer 13 and replace a new isolation layer 13 when the isolation layer 13 is severely worn, so that the baffle mechanism 1 can continue to work and the maintenance cost of the template is reduced.
[0030] Further, a plurality of first screws are arranged on the second reinforcing rib 131, the first screws penetrate through the second reinforcing rib 131 and the first reinforcing rib 121 in sequence and are detachably connected with the bottom plate 11, the heat preservation layer 12 and the isolation layer 13 are limited on the bottom plate 11 by the first screws, and the heat preservation layer 12 and the isolation layer 13 can be detached by detaching the first screws.
[0031] Please refer to Figure 1 , Figure 5 and Figure 6 .
[0032] The baffle mechanism 1 is placed on the top of the base 2, the baffle mechanism 1 is close to the edge of the base 2, one end of the support mechanism 3 penetrates through the heat preservation layer 12 and is connected with the bottom plate 11, and the other end of the support mechanism 3 is detachably connected with the base 2. The support mechanism 3 is used to support the angle of the baffle mechanism 1 formed on the base 2.
[0033] The top of the base 2 is provided with an installation area 21, which is a slope, and a cushion block 211 is detachably connected in the installation area 21, and the outer side of the cushion block 211 is provided with a contact area; a plurality of second screws are arranged in the installation area 21, the second screws pass through the cushion block 211 and are detachably connected with the base 2, the cushion block 211 is connected on the base 2 through the second screws, or the cushion block 211 is detached through the second screws; the contact area of the cushion block 211 is in contact with the heat preservation layer 12, when the outer contour of the cast pier is vertical, the contact area is replaced by a 90° vertical cushion block 211, and when the outer contour of the cast pier is inclined, the contact area is replaced by a cushion block 211 corresponding to the inclination angle of the outer contour of the pier.
[0034] The top of the base 2 is provided with an installation area 21, which is a slope, and a cushion block 211 is detachably connected in the installation area 21, and the outer side of the cushion block 211 is provided with a contact area; a plurality of second screws are arranged in the installation area 21, the second screws pass through the cushion block 211 and are detachably connected with the base 2, the cushion block 211 is connected on the base 2 through the second screws, or the cushion block 211 is detached through the second screws; the contact area of the cushion block 211 is in contact with the heat preservation layer 12, when the outer contour of the cast pier is vertical, the contact area is replaced by a 90° vertical cushion block 211, and when the outer contour of the cast pier is inclined, the contact area is replaced by a cushion block 211 corresponding to the inclination angle of the outer contour of the pier.
[0035] The support mechanism 3 comprises a lead screw 31 and a rocker arm 32; one end of the lead screw 31 is rotatably connected with a first connecting plate 311, the first connecting plate 311 penetrates the heat preservation layer 12 and is connected with the bottom plate 11, one end of the rocker arm 32 is rotatably connected with a nut 321, the other end of the lead screw 31 is connected with the nut 321 in a matched mode, the other end of the lead screw 31 penetrates into the rocker arm 32 and is in sliding contact with the rocker arm 32, the other end of the rocker arm 32 is rotatably connected with a second connecting plate 322, and the second connecting plate 322 is detachably connected with the connecting seat 22; the length of the support mechanism 3 is adjusted by rotating the nut 321, so that the nut 321 pushes the lead screw 31 to slide out or slide in on the rocker arm 32, so that the support mechanism 3 supports the baffle mechanism 1 on the base 2 to form an angle.
[0036] Further, a limiting block is extended on the second connecting plate 322, and the cross section of the limiting block is a T-shaped slot; the limiting block is slidably inserted into the limiting slot, so that the other end of the support mechanism 3 is detachably connected with the connecting seat 22.
[0037] The bridge engineering pouring formwork provided by the utility model can be combined with four pouring formworks, a cuboid pouring cavity is formed between the four baffle mechanisms, and after pouring concrete into the cavity during construction, the liquid concrete is in full contact with the baffle mechanism and forms a rough shape of the pier.
[0038] The heat generated by the electric heat tracing band is firstly conducted to the baffle mechanism, and then the heat energy is uniformly transmitted to the concrete medium through the heat conduction of the baffle mechanism; in order to improve the heat efficiency, a heat preservation layer is covered on the bottom plate side where the electric heat tracing band is installed, the heat preservation structure can effectively block the direct contact of the outside cold air and the bottom plate, thereby reducing the heat loss of the heat generated by the electric heat tracing band, and the double heat preservation design significantly reduces the overall heat loss of the formwork system, and improves the heating efficiency of the formwork.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not a limitation on the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the present application.
Claims
1. A formwork for bridge engineering, characterized by, Including baffle mechanism, base and support mechanism; The baffle mechanism includes a bottom plate and a thermal insulation layer, one side of the bottom plate is provided with a serpentine reciprocating slot, an electric heating tape is arranged in the slot, both ends of the thermal insulation layer are fixedly connected with first reinforcing ribs, two first reinforcing ribs are connected with the top and bottom of the bottom plate respectively, and one side of the thermal insulation layer covers the bottom plate; One end of the support mechanism penetrates the thermal insulation layer and is connected with the bottom plate, the baffle mechanism is placed on the top of the base, the edge of the baffle mechanism is close to the base, and the other end of the support mechanism is detachably connected with the base.
2. The formwork for bridge engineering according to claim 1, wherein The baffle mechanism further includes an isolation layer, both ends of the isolation layer are fixedly connected with second reinforcing ribs, two second reinforcing ribs are connected with the top and bottom of the bottom plate respectively, and the other side of the isolation layer covers the bottom plate.
3. The formwork for bridge engineering according to claim 2, wherein A temperature measuring device is embedded on one side of the bottom plate, the temperature measuring device penetrates the thermal insulation layer, and the temperature measuring device is electrically connected with the electric heating tape.
4. The formwork for bridge engineering according to claim 3, wherein The top of the base is provided with a mounting area, a pad is detachably connected in the mounting area, and the pad top touches the thermal insulation layer.
5. A formwork for bridge engineering according to claim 4, wherein The top of the base extends a connecting seat, and the other end of the support mechanism is detachably connected with the connecting seat.
6. A formwork assembly according to claim 5, wherein the formwork assembly is a bridge formwork assembly. The support mechanism includes a lead screw and a rocker arm, one end of the lead screw is rotatably connected with a first connecting plate, the first connecting plate penetrates the thermal insulation layer and is connected with the bottom plate, one end of the rocker arm is rotatably connected with a nut, the other end of the lead screw is connected with the nut in a matched mode, the other end of the rocker arm is rotatably connected with a second connecting plate, and the second connecting plate is detachably connected with the connecting seat.
7. A formwork assembly according to claim 6, wherein the formwork assembly is a bridge formwork assembly. A limiting block extends on the second connecting plate, a limiting groove is formed on the connecting seat, and the limiting block is slidably inserted into the limiting groove.