Post-cast strip formwork for double-piece assembled comprehensive pipe gallery

Abstract

The utility model relates to a post-cast strip template for a double-piece assembled comprehensive pipe gallery. The post-cast strip template comprises a liftable bottom die and two side dies, the liftable bottom die comprises a bottom plate support, a lifting mechanism and a groove-shaped bottom die, the lower end of the lifting mechanism is connected to the bottom plate support, the upper end of the lifting mechanism is connected to the bottom of the groove-shaped bottom die, the lifting mechanism can drive the groove-shaped bottom die to ascend or descend, and the groove-shaped bottom die is used as a bottom supporting template of post-cast strip concrete; the two side formworks are used for being arranged on the groove-shaped bottom formwork in a supported mode and serve as side face supporting formworks of post-cast strip concrete. When the post-cast strip formwork for the double-piece assembled comprehensive pipe gallery is used for erecting a formwork at the post-cast strip position when two half-piece prefabricated pipe gallery sections are assembled, after post-cast strip concrete pouring is completed and the strength for bearing the load of the post-cast strip concrete is achieved, the formwork can be quickly disassembled without lifting the whole prefabricated pipe gallery sections; therefore, the turnover rate of the post-cast strip formwork is increased, the utilization rate of the post-cast strip formwork is improved, and the construction period is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to municipal engineering technical field more specifically, relate to a kind of post-cast strip formworks for double-piece assembled comprehensive pipe gallery. BACKGROUND

[0002] Because large-section prefabricated pipe gallery section is difficult to transport, it needs to be assembled into a complete prefabricated pipe gallery section in two pieces on site after half-piece prefabrication in a prefabrication plant, and a post-assembled post-cast strip needs to be set during on-site assembly. During traditional post-cast strip construction and assembly, the post-cast strip concrete needs to reach the design strength before being lifted for removal of the bottom mold. However, it takes a long time for the post-cast strip concrete to reach the design strength, which seriously affects the turnover rate of the post-cast strip mold, especially the post-cast strip bottom mold, and further affects the construction schedule. SUMMARY

[0003] Therefore, the utility model aims to provide a post-cast strip formwork for double-piece assembled comprehensive pipe gallery to solve the problems in the prior art.

[0004] According to the utility model, a post-cast strip formwork for double-piece assembled comprehensive pipe gallery is provided, which comprises a liftable bottom mold and two side molds.

[0005] The liftable bottom mold comprises a bottom plate support, a lifting mechanism, and a grooved bottom mold. The lower end of the lifting mechanism is connected to the bottom plate support, and the upper end of the lifting mechanism is connected to the bottom of the grooved bottom mold. The lifting mechanism can drive the grooved bottom mold to rise or fall. The grooved bottom mold serves as a bottom support formwork for post-cast strip concrete.

[0006] The two side molds are used to be set on the grooved bottom mold as side support formworks for post-cast strip concrete.

[0007] Preferably, the grooved bottom mold comprises a groove bottom plate and two groove side plates arranged at both ends of the groove bottom plate in the width direction. The bottom of the side mold is used to abut against the groove bottom plate, and the outer side of the side mold is used to abut against the inner side of the groove side plate.

[0008] Preferably, a layer of plastic formwork is arranged on the groove bottom plate.

[0009] Preferably, the lifting mechanism is a jack.

[0010] Preferably, the jack is a hydraulic jack or a screw jack.

[0011] Preferably, the number of jacks is two, and the two jacks are arranged at intervals along the length direction of the grooved bottom mold.

[0012] Preferably, the bottom plate support is a rectangular steel plate.

[0013] Preferably, the side mold comprises a side mold panel and a side mold skeleton, and the side mold panel is fixedly connected to one side of the side mold skeleton.

[0014] Preferably, the side mold skeleton is a flat frame structure welded by sections.

[0015] Preferably, the top of the side mold is provided with an ear.

[0016] The back pouring belt formwork for the double-piece assembled comprehensive pipe gallery provided by the utility model can support the position of the back pouring belt when two half-piece prefabricated pipe gallery sections are assembled through the setting of the liftable bottom mold and the two side molds, and after the back pouring belt concrete pouring is completed and reaches the strength to bear its own load, the side mold and the bottom mold can be quickly removed in situ without lifting the whole prefabricated pipe gallery section, so that the turnover rate of the back pouring belt formwork is accelerated, the utilization rate of the back pouring belt formwork is improved, the construction period is saved, and the construction cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the utility model will become more apparent from the following description of the utility model embodiments with reference to the accompanying drawings.

[0018] Figure 1 A three-dimensional structure schematic diagram of the back pouring belt formwork for the double-piece assembled comprehensive pipe gallery according to the utility model embodiments is shown.

[0019] Figure 2 It is a structure schematic diagram when two half-piece prefabricated pipe gallery sections are lifted and placed on two concrete supports.

[0020] Figure 3 It is a structure schematic diagram after the butt joint back pouring belt reinforcement is bound at the back pouring belt position between the two half-piece prefabricated pipe gallery sections.

[0021] Figure 4 It is a structure schematic diagram after the liftable bottom mold is set below the back pouring belt position between the two half-piece prefabricated pipe gallery sections.

[0022] Figure 5 It is a structure schematic diagram after the side mold is installed at the back pouring belt position between the two half-piece prefabricated pipe gallery sections.

[0023] Figure 6 It is a structure schematic diagram after the side mold is removed after the back pouring belt concrete is poured between the two half-piece prefabricated pipe gallery sections.

[0024] Figure 7 It is a structure schematic diagram after the liftable bottom mold is removed after the back pouring belt concrete is poured between the two half-piece prefabricated pipe gallery sections.

[0025] In the figure: 1, the liftable bottom die; 11, the bottom plate support; 12, the lifting mechanism; 13, the groove type bottom die; 131, the groove bottom plate; 132, the groove side plate; 2, the side die; 21, the side die panel; 22, the side die framework; 23, the lifting lug; 3, the concrete support; 4, the half piece prefabricated pipe gallery section; 5, the post-cast strip steel bar; 6, the post-cast strip concrete. DETAILED DESCRIPTION

[0026] Various embodiments of the present application will be described in more detail below with reference to the accompanying drawings. In each of the drawings, the same elements are denoted by the same or similar reference numerals in order to clearly describe the present application.

[0027] The utility model provides a kind of post-cast strip formwork for double-piece assembled comprehensive pipe gallery, referring to Figure 1 The post-cast strip formwork for double-piece assembled comprehensive pipe gallery includes liftable bottom die 1 and two side dies 2;Wherein, the liftable bottom die 1 includes bottom plate support 11, lifting mechanism 12 and groove type bottom die 13, the lower end of lifting mechanism 12 is connected on the bottom plate support 11, the upper end of lifting mechanism 12 is connected on the bottom of groove type bottom die 13, lifting mechanism 12 can drive groove type bottom die 13 to rise or fall, groove type bottom die 13 is used as the bottom support formwork of post-cast strip concrete;Two side dies 2 are used to support on groove type bottom die 13, as the side support formwork of post-cast strip concrete.

[0028] Specifically, the post-cast strip formwork for double-piece assembled comprehensive pipe gallery is used, two half piece prefabricated pipe gallery sections 4 are oppositely arranged on two interval arranged concrete supports 3, so that the post-cast strip position is located between the two concrete supports 3, the liftable bottom die is placed below the post-cast strip position, the groove type bottom die 13 is jacked up by lifting mechanism 12, so that the upper surface of groove type bottom die 13 is flush with the lower end surface of half piece prefabricated pipe gallery section 4, then two side dies 2 are supported on groove type bottom die 13, and two side dies 2 are located on both sides of post-cast strip area, that is, the post-cast strip can be concreted. After the post-cast strip concrete is poured, when the strength of post-cast strip concrete reaches the weight of post-cast strip concrete itself that can support the post-cast strip position, the post-cast strip formwork can be removed, the side die 2 is removed first, then the groove type bottom die 13 is lowered by lifting mechanism 12, so that the liftable bottom die 1 can be moved out from below the post-cast strip concrete position for repeated use.

[0029] Further, the groove-shaped bottom die 13 comprises a groove bottom plate 131 and two groove side plates 132 arranged at both ends of the groove bottom plate 131 in the width direction, the bottom of the side die 2 is used to abut on the groove bottom plate 131, and the outer side of the side die 2 is used to abut on the inner side of the groove side plate 132. With such a structure, when the side die 2 is erected, the lower end outer side of the side die 2 can directly abut on the inner side of the groove side plate 132 for limiting, which can prevent the side die 2 from expanding at the bottom when pouring the post-cast strip concrete. As a preferred, a layer of plastic formwork (not shown in the figure) is arranged on the groove bottom plate 131, and in specific implementation, the plastic formwork can be adhered to the upper surface of the groove bottom plate 131 by adhesive. By arranging the plastic formwork, the surface of the plastic formwork is smooth, which is easier to demould, and the concrete residues are easy to clean, and the maintenance is simple.

[0030] Further, the lifting mechanism 12 is a jack, which is a hydraulic jack or a screw jack. The jack can conveniently jack up or lower the groove-shaped bottom die 13, and is more convenient to use. As a preferred, the number of the jack is two, and the two jacks are arranged along the length direction of the groove-shaped bottom die 13. By arranging two jacks, the groove-shaped bottom die 13 can be better supported, so that the groove-shaped bottom die 13 is more stable when in use. In specific implementation, the bottom end of the cylinder barrel of the jack and the top end of the telescopic rod of the jack can be respectively provided with flange connecting plates or hinged seats, and the upper and lower ends of the jack are connected to the groove-shaped bottom plate and the bottom plate support 11 through the flange connecting plates or the hinged seats. In other alternative embodiments, the lifting structure can be a telescopic screw rod, which can be arranged to comprise: an upper screw rod with left-handed threads connected to the groove-shaped bottom die 13, a lower screw rod with right-handed threads connected to the bottom plate support 11, and an adjusting sleeve screwed on the upper screw rod and the lower screw rod and having left-handed and right-handed threads at both ends, and by rotating the adjusting sleeve in the forward or reverse direction, the groove-shaped bottom die 13 can be jacked up or lowered.

[0031] In the embodiment, the bottom plate support 11 is a rectangular steel plate, which can improve the support area and provide more stable support for the lifting mechanism 12 and the groove-shaped bottom die 13.

[0032] Further, the side die 2 comprises a side die panel 21 and a side die framework 22, and the side die panel 21 is fixedly connected to one side of the side die framework 22. The side die framework 22 is a flat plate-shaped frame structure welded from a profile. In specific implementation, the side die panel 21 can be fixedly connected to the side die framework 22 by welding or connected to the side die framework 22 by means of a countersunk screw. As a preferred, the side die panel 21 is a plastic formwork, which can facilitate demoulding and cleaning.

[0033] Further, the top of the side mold 2 is provided with lifting lugs 23, which facilitate hoisting of the side mold 2 using hoisting equipment during installation and removal. In the embodiment, the lifting lugs 23 are welded and fixed to the top of the side mold skeleton 22.

[0034] The use method of the post-cast strip formwork for the double-piece assembled comprehensive pipe gallery is introduced below in combination with the drawings. Figure 2 At the construction site, according to the size and mutual relationship of the two half-pieces of the prefabricated pipe gallery section 4 to be assembled, a prefabricated concrete support 3 is prepared, the concrete support 3 is disconnected at the post-cast strip position of the two half-pieces of the prefabricated pipe gallery section 4 to be assembled, and a post-cast strip gap is left; and the two half-pieces of the prefabricated pipe gallery section 4 are transported and placed on the concrete support 3. See Figure 3 The butt-jointed post-cast strip steel bars 5 are bound between the two half-pieces of the prefabricated pipe gallery section 4. See Figure 4 The liftable bottom mold 1 is placed below the post-cast strip position, and the inner sides of the two groove side plates 132 of the groove-shaped bottom mold 13 are aligned with the side faces of the two half-pieces of the prefabricated pipe gallery section 4; the groove-shaped bottom mold 13 is jacked up through the lifting mechanism 12, so that the upper surface of the groove bottom plate 131 of the groove-shaped bottom mold 13 is flush with the lower end face of the two half-pieces of the prefabricated pipe gallery section 4. See Figure 5 The two side molds 2 are supported on the groove-shaped bottom mold 13, the lower end outer sides of the two side molds 2 abut against the inner sides of the groove side plates 132 of the groove-shaped bottom mold 13, the horizontal direction two ends of the two side molds 2 are respectively clamped on the two half-pieces of the prefabricated pipe gallery section 4, and the upper ends of the two side molds 2 are fixed through the tensioning screw rod connection; after the liftable bottom mold 1 and the two side molds 2 are installed, the post-cast strip position is concreted. See Figure 6 After the post-cast strip concrete 6 reaches 50% of the design strength (or can support the weight of the post-cast strip position itself), the two side molds 2 are removed, and the groove-shaped bottom mold 13 is lowered through the lifting mechanism 12, so that it is separated from the bottom surface of the post-cast strip concrete 6. See Figure 7 The liftable bottom mold 1 is removed from the post-cast strip concrete 6 position, the removed liftable bottom mold 1 can be transferred to the post-cast strip position of the next prefabricated pipe gallery section to be assembled for recycling; at the same time, the post-cast strip concrete 6 is continuously maintained, and after the post-cast strip concrete 6 reaches 100% of the design strength, the entire prefabricated pipe gallery section is hoisted and transported for on-site construction.

[0035] The post-cast strip formwork for the double-piece assembled comprehensive pipe gallery is simple to manufacture and convenient to operate and use, does not need to purchase special materials and equipment, and can realize quick and efficient installation and removal of the post-cast strip bottom mold.

[0036] The post-pouring belt formwork for the double-piece assembled comprehensive pipe gallery is provided by the utility model, the post-pouring belt position during the assembling of the two half-piece prefabricated pipe gallery sections is supported by the setting of the liftable bottom die and the two side dies, after the post-pouring belt concrete pouring is completed and the strength of bearing its own load is reached, the side die and the bottom die can be quickly removed in situ without hoisting the whole prefabricated pipe gallery section, so that the turnover rate of the post-pouring belt formwork is accelerated, the utilization rate of the post-pouring belt formwork is improved, the construction period is saved, and the construction cost is reduced.

[0037] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0038] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, all the implementation ways do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A formwork for post-cast strips in a double-piece assembled integrated utility tunnel, characterized in that, include: A liftable bottom mold and two side molds; among which, The liftable bottom formwork includes a base plate support, a lifting mechanism, and a trough-shaped bottom formwork. The lower end of the lifting mechanism is connected to the base plate support, and the upper end of the lifting mechanism is connected to the bottom of the trough-shaped bottom formwork. The lifting mechanism can drive the trough-shaped bottom formwork to rise or fall. The trough-shaped bottom formwork is used as the bottom support template for the post-pouring concrete. The two side molds are used to support the bottom mold of the trough, serving as side support templates for the post-cast concrete.

2. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 1, characterized in that, The trough-shaped bottom mold includes a trough bottom plate and two trough side plates disposed at both ends of the trough bottom plate in the width direction. The bottom of the side mold is used to abut against the trough bottom plate, and the outer side of the side mold is used to abut against the inner side of the trough side plate.

3. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 2, characterized in that, A layer of plastic template is provided on the bottom plate of the trough.

4. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 1, characterized in that, The lifting mechanism is a jack.

5. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 4, characterized in that, The jack is a hydraulic jack or a screw jack.

6. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 4, characterized in that, The number of jacks is two, and the two jacks are spaced apart along the length direction of the groove bottom mold.

7. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 1, characterized in that, The base plate support is a rectangular steel plate.

8. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 1, characterized in that, The side mold includes a side mold panel and a side mold frame, with the side mold panel fixedly connected to one side of the side mold frame.

9. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 8, characterized in that, The side mold skeleton is a flat frame structure welded from profiles.

10. The formwork for the post-cast strip of a double-piece assembled integrated utility tunnel according to claim 8, characterized in that, The top of the side mold is provided with lifting lugs.

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