CN211113187U - Template system for high pier construction - Google Patents
Template system for high pier construction Download PDFInfo
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- CN211113187U CN211113187U CN201920868367.3U CN201920868367U CN211113187U CN 211113187 U CN211113187 U CN 211113187U CN 201920868367 U CN201920868367 U CN 201920868367U CN 211113187 U CN211113187 U CN 211113187U
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Abstract
The utility model discloses a template system for high pier construction, which is used for thin-wall hollow high pier construction; the method comprises the following steps: the template system comprises an inner template and an outer template, the outer template forms a cavity structure in a surrounding mode, the inner template is arranged in the cavity structure, and a cavity to be poured is formed between the inner template and the outer template; the formwork lifting device comprises a first lifting device connected with the inner formwork and a second lifting device connected with the outer formwork; in the high pier construction, the formwork lifting device is respectively used for lifting the inner formwork and the outer formwork; the inner operating platform is arranged in the inner template; the outer operating platform is arranged on the periphery of the outer template; the lifting device comprises a first lifting device and a second lifting device; during construction, the template is lifted by the template lifting system, and then the inner operating platform and the outer operating platform are lifted by the lifting device.
Description
Technical Field
The utility model belongs to the technical field of the high mound concrete construction of bridge, a be applied to template system of the hollow high mound concrete construction of bridge thin wall is related to.
Background
When a highway crosses deep groove dangerous peaks, the lower part of the bridge is higher and is usually designed into a high pier. According to the stipulation, when the bridge pier exceeds 40 meters, the bridge pier is generally designed into a thin-wall hollow pier, and the concrete construction needs to adopt processes such as creeping formwork or turning plates. The present plate turnover system construction platform that is applied to high mound concrete construction field generally depends on the plain type scaffold frame on the template, and it is shown with reference to attached figure 1-1 to 1-5, when the lower bolster form is demolishd and is lifted upwards, will walk around the side forms and promote, because rail and template link together, construction safety drawback is obvious, has very big potential safety hazard in the promotion process. And because the traditional template is connected with an operation platform, the template has a complex structure and large self weight, the cost is increased, the construction is inconvenient, and the economy and the safety are unreasonable.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a promote rail formula template system for high mound construction of bridge, solved the following problem that exists among the prior art template structure is complicated, promote the operation difficulty, there is the potential safety hazard in construction platform and template connection, the construction work efficiency is not high, construction cost is great, etc.
In order to realize the above effect, the utility model discloses the technical scheme who adopts is:
a template system for high pier construction is used for thin-wall hollow high pier construction; the method comprises the following steps:
the template system comprises an inner template and an outer template, the outer template forms a cavity structure in a surrounding mode, the inner template is arranged in the cavity structure, and a cavity to be poured is formed between the inner template and the outer template;
the formwork lifting device comprises a first lifting device connected with the inner formwork and a second lifting device connected with the outer formwork; in the high pier construction, the formwork lifting device is respectively used for lifting the inner formwork and the outer formwork;
the inner operating platform is arranged in the inner template;
the outer operating platform is arranged on the periphery of the outer template;
the lifting device comprises a first lifting device for controlling the inner operating platform to lift and a second lifting device for controlling the outer operating platform to lift;
before the lifting device acts, the template lifting device finishes lifting the corresponding template.
The utility model discloses in, through the template and the operation platform that set up alone, ensure in the construction, both promote alone, construct alone, and the security is higher.
As a further improvement of the present invention, the inner form and the inner operation platform are provided with a first operation gap therebetween, the inner form is lifted by turning over the inner form through the first operation gap, and the first operation gap is 28-35 mm. The operation clearance is too large, the safety is difficult to guarantee, constructors in the turnover formwork are unsafe, a small inner operation platform is needed, and the operation clearance is not easy to build; if the size is too small, the die is difficult to overturn, the construction difficulty is increased, and the construction time is prolonged.
As a further improvement of the present invention, the outer form plate is provided with a second operation gap between the outer operation platforms, the outer form plate is lifted by turning over the outer form plate through the second operation gap, and the second operation gap is 28-35 mm. The operation clearance is too large, the safety is difficult to guarantee, constructors in the turnover formwork are unsafe, a large external operation platform is needed, and the operation clearance is not easy to build; if the size is too small, the die is difficult to overturn, the construction difficulty is increased, and the construction time is prolonged.
As a further improvement, the utility model also comprises a supporting steel bar for supporting the inner operation platform, the supporting steel bar passes to be treated to pour the cavity and the end part is exposed. In the technology, after a supporting steel bar penetrates through a cavity to be poured, two ends of the supporting steel bar are exposed out of an outer body of a pier; through the support rod iron that exposes, can ensure the support of operation platform bottom, improve stability.
As a further improvement, the inner operating platform and the outer operating platform are respectively provided with a bottom beam, two the bottom beam is a frame structure, two the bottom beam is supported by a common supporting steel bar.
Specifically, the bottom beam is of a rectangular frame structure and directly falls down to be placed on four exposed cantilevers of the supporting steel bars. The supporting of the supporting steel bar on the outer operating platform is realized through the bottom beam; the two bottom beams are a first profile steel bottom beam for respectively supporting the outer operating platform and a second profile steel bottom beam for respectively supporting the inner operating platform, the first profile steel bottom beams are arranged on the periphery of the second profile steel bottom beam, the heights of the first profile steel bottom beams and the second profile steel bottom beams are consistent, then the first profile steel bottom beams and the second profile steel bottom beams are supported through shared supporting steel bars, the number of shared supporting steel plates can be two, four or six, and the shared supporting steel bars are used for supporting at the moment, so that the cost is saved, and the construction safety of the inner and outer operating platforms is ensured; meanwhile, the technical personnel in the field know that an exposed cantilever is further arranged in the construction process, and the first section steel bottom beam positioned at the bottom of the outer operating platform can be supported through the exposed cantilever.
As a further improvement of the utility model, the height of the outer operating platform is higher than that of the inner operating platform, and the height of the inner operating platform is 3-5 times that of the template system. The operating platform is too high, and the safety of constructors can be ensured.
As a further improvement, the outer operation platform comprises a plurality of scaffolds, and a plurality of scaffolds are buckled through the bowl and are connected to form a closed space, the template system and the inner operation platform are all located in the closed space. Through the closed outer operating platform, the safety of constructors is further guaranteed.
As the utility model discloses a further improvement, the scaffold frame includes base, pole setting, horizontal pole and bridging, and the tip of a plurality of pole settings is fixed with the base respectively, and a plurality of horizontal pole parallel arrangement are in the pole setting, and the both ends of horizontal pole are connected with two adjacent pole settings respectively, and at least three horizontal pole forms a set ofly, sets up a bridging on every group.
As a further improvement of the utility model, the distance between the cross rods is 30-50 cm. The distance between the crossbars cannot be too small, otherwise the machining is troublesome, while too large a distance results in too low stability.
Drawings
FIG. 1-1 is a diagram showing the operation of a formwork panel turnover according to the prior art;
FIG. 1-2 is a second diagram of the working state of the turning plate of the formwork in the prior art;
FIGS. 1-3 are third views showing the operation of the turning plate of the formwork in accordance with the prior art;
FIGS. 1-4 are four views showing the operation of the turning plate of the formwork in the prior art;
FIGS. 1-5 are five views showing the operation of the turning plate of the formwork in the prior art;
FIG. 2-1 is a view showing an operation state of the construction method according to the present invention;
FIG. 2-2 is a second working state diagram of the construction method provided by the present invention;
fig. 2-3 are third working state diagrams of the construction method provided by the utility model;
FIG. 2-4 is a fourth diagram of the working state of the construction method provided by the present invention;
FIG. 3 is a process flow diagram of example 3 provided by the present invention;
fig. 4 is a schematic structural diagram of a template in example 3 provided by the present invention;
fig. 5 is a top view of the form of example 3 provided by the present invention;
fig. 6 is a front view of an outer steel pipe scaffold in embodiment 3 provided by the present invention;
fig. 7 is a right side view of the outer steel pipe scaffold in embodiment 3 provided by the present invention;
fig. 8 is a right side view of the inner steel pipe scaffold in example 3 provided by the present invention;
in the figure:
1. an inner template; 2. an outer template; 3. a pier body; 4. an internal operating platform; 5. an external operating platform; 6. a support body; 7. a first profile steel bottom beam; 8. a second profile steel bottom beam; 9. a small cross bar; 10. a large cross bar; 11. Erecting a rod; 12. a scissor support; 13. a base.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
The utility model relates to a template system for high pier construction, which is used for thin-wall hollow high pier construction; the method comprises the following steps: the template system comprises an inner template and an outer template, the outer template forms a cavity structure in a surrounding mode, the inner template is arranged in the cavity structure, and a cavity to be poured is formed between the inner template and the outer template;
the formwork lifting device comprises a first lifting device connected with the inner formwork and a second lifting device connected with the outer formwork; in the high pier construction, the formwork lifting device is respectively used for lifting the inner formwork and the outer formwork; the template lifting device can be a tower crane.
The inner operating platform is arranged in the inner template;
the outer operating platform is arranged on the periphery of the outer template;
the lifting device comprises a first lifting device for controlling the inner operating platform to lift and a second lifting device for controlling the outer operating platform to lift; the lifting device may be a chain guide suspension.
When the high pier is constructed and turned over, the template is lifted by the template lifting system, and then the inner operating platform and the outer operating platform are lifted by the lifting device.
The utility model discloses in, through the template and the operation platform that set up alone, ensure in the construction, both promote alone, construct alone, and the security is higher.
Furthermore, a first operation gap is arranged between the inner template and the inner operation platform, the inner template is turned over and lifted through the first operation gap, and the first operation gap is 28-35 mm. The operation clearance is too large, the safety is difficult to guarantee, constructors in the turnover formwork are unsafe, a small inner operation platform is needed, and the operation clearance is not easy to build; if the size is too small, the die is difficult to overturn, the construction difficulty is increased, and the construction time is prolonged.
Further, a second operation gap is arranged between the outer template and the outer operation platform, the outer template is turned over and lifted through the second operation gap, and the second operation gap is 28-35 mm. The operation clearance is too large, the safety is difficult to guarantee, constructors in the turnover formwork are unsafe, a large external operation platform is needed, and the operation clearance is not easy to build; if the size is too small, the die is difficult to overturn, the construction difficulty is increased, and the construction time is prolonged.
In order to realize the support, the device also comprises a support steel bar for supporting the inner operating platform, wherein the support steel bar penetrates through the cavity to be poured, and the end part of the support steel bar is exposed. In the technology, after a supporting steel bar penetrates through a cavity to be poured, two ends of the supporting steel bar are exposed out of an outer body of a pier; through the support rod iron that exposes, can ensure the support of operation platform bottom, improve stability.
In order to ensure the construction safety, the bottoms of the inner operating platform and the outer operating platform are respectively provided with a bottom beam, the bottom beams are of a frame structure, and the bottom beams are supported through a shared supporting steel bar.
Specifically, the bottom beam is of a rectangular frame structure and directly falls down to be placed on four exposed cantilevers of the supporting steel bars. The supporting of the supporting steel bar on the outer operating platform is realized through the bottom beam; the two bottom beams are a first profile steel bottom beam for respectively supporting the outer operating platform and a second profile steel bottom beam for respectively supporting the inner operating platform, the first profile steel bottom beams are arranged on the periphery of the second profile steel bottom beam, the heights of the first profile steel bottom beams and the second profile steel bottom beams are consistent, then the first profile steel bottom beams and the second profile steel bottom beams are supported through shared supporting steel bars, the number of shared supporting steel plates can be two, four or six, and the shared supporting steel bars are used for supporting at the moment, so that the cost is saved, and the construction safety of the inner and outer operating platforms is ensured; meanwhile, the technical personnel in the field know that an exposed cantilever is further arranged in the construction process, and the first section steel bottom beam positioned at the bottom of the outer operating platform can be supported through the exposed cantilever.
In order to improve the safety, the height of the outer operating platform is higher than that of the inner operating platform, and the height of the inner operating platform is 3-5 times of that of the template system. The operating platform is too high, and the safety of constructors can be ensured.
Further, outer operation platform includes a plurality of scaffolds, and a plurality of scaffolds pass through the bowl and detain the connection, form closed interval, formwork system and interior operation platform all locate in the closed interval. Through the closed outer operating platform, the safety of constructors is further guaranteed.
Further, the scaffold frame includes base, pole setting, horizontal pole and bridging, and the tip of a plurality of pole settings is fixed with the base respectively, and a plurality of horizontal poles parallel arrangement are in the pole setting, and the both ends of horizontal pole are connected with two adjacent pole settings respectively, and at least three horizontal pole forms a set ofly, sets up a bridging on every group.
Further, the distance between the cross rods is 30-50 cm. The distance between the crossbars cannot be too small, otherwise the machining is troublesome, while too large a distance results in too low stability.
Example 2
Referring to the attached drawings 2-1 to 2-4, the device of the utility model is adopted to carry out high pier construction, specifically, the high pier comprises N sections, each section comprises two sections, N is a natural number more than or equal to 2, and the height of each section is 5 +/-0.5 m; the concrete construction comprises the following steps:
firstly, according to the requirements of a safety construction manual and the like, a protective device such as a safety protection net and the like is arranged on the outer side of a pier, so that the safety in construction is ensured, and meanwhile, a foundation and the like are drilled to make full preparation for the construction of a high pier.
In the step 1) of constructing the first section of pier, the laying operation platform specifically comprises the following steps: the laying of outer operation platform and the laying of interior operation platform, outer operation platform forms confined interval, high mound is located confined interval, interior operation platform lays in the inside of high mound. Through the outside closed area, with high mound cladding, can make things convenient for the staff to be under construction, play the guard action.
The utility model discloses in, form template removal space between outer operation platform and the high mound and between interior operation platform and the high mound. The formed moving space is convenient for the lower template to move when moving.
Specifically, outer operation platform includes a plurality of first outer climbing devices, and a plurality of first climbing device's bottom loops through the tie-beam connection and forms closed interval.
Specifically, the inner operating platform comprises a plurality of second outer climbing devices, and the bottoms of the second outer climbing devices are connected in sequence through connecting beams to form a closed area.
In actual operation, outer operation platform and interior operation platform all adopt scaffold to connect and form, and the scaffold frame is convenient to be connected, and the quality is lighter moreover, and it is more convenient to use.
Secondly, the construction of the first section of pier:
specifically, an operation platform and peripheral protection are arranged on a foundation, and construction of a first section of pier is realized through steel bar forming, template positioning and pouring; of course, the process also comprises the steps of measuring, paying off, maintaining and the like;
thirdly, constructing the next section of pier: forming the reinforcing steel bars of the next section of pier by means of the previous section of pier, then moving the template of the 1 st section of the previous section of pier to the 1 st section of the next section of pier and performing construction, wherein an installation part for installing an operation platform is reserved at the bottom of the 1 st section of the next section of pier in the construction; after construction, lifting the operating platform to the bottom of the 1 st section of the next section of pier, and performing construction on the 2 nd section of the next section of pier after the template of the 2 nd section of the previous section of pier moves to the 2 nd section of the next section of pier;
in this step, moving the template of the section 1 of the previous section to the section 1 of the next section of pier specifically comprises: and moving the 1 st section of template of the upper section of pier out of the upper section of pier, then moving the template to the 1 st section of the next section of pier after bypassing the 2 nd section of template of the upper section of pier. Because the 1 st section of template is positioned at the lower part, the template is troublesome if the template moves upwards in other modes such as an inner side and the like, and the construction of the space position has limitation in the construction of the high pier, an operation mode of bypassing the 2 nd section of template positioned at the upper part is adopted, on one hand, the stability of the 2 nd section of template can be ensured in the bypassing process, and the accidents of falling off and the like caused by the contact with the 2 nd section of template are avoided; on the other hand, the construction process can adopt a tower crane, the tower crane firstly moves horizontally, then moves up and down, and finally moves horizontally and is installed on the 2 nd section of template, so that the construction is accurate. Because in the whole process, the template moves independently, the operation of the scaffold can not be influenced, and the working efficiency is improved.
Meanwhile, in the step, the distance of the 1 st section of template of the previous section of pier moving out of the template is 10mm-20 mm. The high pier bridge is generally constructed in a space with a distance such as a canyon and a bridge, but when the high pier bridge is arranged, the cross section of the bridge is not very large, so that the internal distance of the bridge is limited in construction, when the distance less than 10mm is adopted, the distance between the 1 st section of template and the 2 nd section of template positioned on the upper part of the 1 st section of template is too short, the 1 st section of template is easy to touch, the construction of the 2 nd section of template is influenced, and other auxiliary devices at the periphery of the 2 nd section of template are easy to touch, so that the construction of the 2 nd section of template is influenced; if the distance is too large and is larger than 20mm, the internal position of the space is not allowed, and the distance from the high pier is too far, so that equipment and a working process in construction are large, and certain financial and material resources are wasted.
The step of moving the 1 st section of the pier from the previous section of the pier to the 1 st section of the pier specifically comprises the movement of the inner template and the movement of the outer template, wherein in the movement, the inner template is moved firstly, and then the outer template is moved.
The operation platform is lifted to the bottom of the 1 st section of the next pier, and the operation platform further comprises an operation platform support, wherein the operation platform support is as follows: the supporting of the operating platform is realized by the supporting body inserted into the reserved mounting part. Through the installation department of reserving, guaranteed the support of whole operation platform bottom, avoid removing the back, operation platform unstability problem that drops. Specifically, the supporter can select for use the rod iron, passes the preformed hole with it, sets up in operation platform's lower part, carries out the support to operation platform.
And finally, constructing the Nth section: and (3) repeating the operation of the step 2), wherein the construction of each section of pier is carried out after the construction of the previous section of pier is completed until the construction of the Nth section of pier is completed. The template and the operation platform are independently lifted, the weight is lighter in each lifting process, the potential safety hazard is small, the lifting is independent, the weight is lightened, and the lifting mode is more diversified in selection. Need not synchronous promotion, when a plurality of hoisting device, need not satisfy and go on in step, convenient operation.
In this embodiment, through the synchronous promotion with template and operation platform change into asynchronous promotion, this little change for the security performance of whole construction obtains very big promotion, and simultaneously, behind every section mound construction, promote template and operation platform respectively, ensure construction safety.
The utility model discloses in, through set up the installation department below the bottom template, for later stage operation platform's support provides the condition, ensured later stage operation platform's stable stay.
Example 3
Referring to fig. 3-7 and 2-1 to 2-4, the utility model discloses in, at first, need lay operation platform, specifically, operation platform comprises shaped steel floorbar and inside and outside steel pipe scaffold, scaffold board, safety net, the safety net is in the periphery of high mound, inside steel pipe scaffold sets up in inside, a plurality of inside steel pipe scaffolds pass through the bowl and detain the connection, form confined interior operation platform 4, interior operation platform 4 has a certain distance with interior template 1 in the template simultaneously, approximate distance is about 30cm, make things convenient for lower floor's template to carry through this width and hang, realize rising. A plurality of outer steel pipe scaffolds are buckled through the bowl and are connected, form confined outer operation platform 5, and outer operation platform 5 has certain interval with outer template 2 in the template. The distance is about 30cm greater than the thickness of the template, so that the template can be conveniently lifted and hung on site through the width. The closed outer operating platform ensures that the whole construction is carried out in the interior, and the safety is high. The inner template 1 and the outer template 2 just coat the pier body 3.
In this embodiment, the interval between operation platform and the template sets up to 30 ± 5cm, through this interval, can realize the independent lift of interior outer template, and in the template goes up and down, operation platform need not to remove, can not influenced.
The utility model also comprises a section steel bottom beam which is used for supporting the external operating platform, and the section steel bottom beam is formed by welding section steel (the specific size is determined according to the on-site actual condition calculation);
the inner steel scaffold and the outer steel scaffold are composed of small cross rods (in the width direction), large cross rods (in the length direction), vertical rods, cross braces and a base (formed by welding section steel according to the actual situation on site). Referring to the attached drawings, the cross braces can support the vertical rods of multiple sections, namely, one cross brace is arranged among the cross rods, the small cross rods, the vertical rods, the base and the cross braces are adopted for the small-specification scaffold, and the large cross rods, the vertical rods, the base and the cross braces are adopted for the large-specification scaffold.
In this embodiment, the outer steel pipe scaffold is set up on first shaped steel floorbar 7, and the shaped steel floorbar is set up on second shaped steel floorbar 8, and shaped steel floorbar 1 is set up on the rod iron (i.e. supporter 6), and the rod iron is worn in the cavity (i.e. installation department) that reserves.
Referring to the attached figures 7-8, the outer steel pipe scaffold comprises small cross rods, large cross rods, vertical rods, cross braces and a base. Wherein the pole setting welding of lower floor is on the base, and all the other member are by bowl formula fastener interconnect, lay scaffold board on every layer of little horizontal pole, and the pole setting outside installation safety net. The safety net is generally installed along the outer side of the vertical rod, and the safety net is an existing product and is made of nylon as a raw material.
The inner steel pipe scaffold is directly erected on the steel bar.
The inner steel pipe scaffold is composed of a small cross rod, a large cross rod, a vertical rod, a cross brace and a base. Wherein the vertical rod of the lowest layer is welded on the base, the other rod pieces are connected with each other by the bowl-type fastener, and the scaffold board is laid on each layer of small cross rods.
Referring to fig. 3-8, in the present embodiment, the lifting fence type panel turnover system (i.e. the whole formwork system) mainly comprises a lifting fence operation platform and a formwork, and the operation platform and the formwork are separately and independently supported.
The operation platform for lifting the fence consists of a profile steel bottom beam, a steel pipe support, a scaffold plate and a safety net, and the total height of the fence is 12 m. The solidified concrete pier body is taken as a bearing main body, is supported on a steel bar in a preformed hole of solidified concrete and is lifted along with the circular lifting of the template, and constructors and machines are attached to the solidified concrete pier body to complete the work of steel bar forming, template positioning and correction, concrete pouring, curing and the like.
The template system comprises two sections of templates (specifically can be divided into an upper section of templates and a lower section of templates, and when in use, the lower section of templates is positioned at the lower part), and each section of templates is 3m high. The solidified concrete pier body is used as a bearing main body, the round steel pull rod penetrating through the concrete pier body is attached to the lower formwork on the finished concrete pier body to support the upper formwork, and the construction of the pier column is completed in a circulating mode repeatedly.
The overall process is as follows: as shown in the figure, construction of the pier body of the first section A (namely the lower section formwork in the pier of the first section) → construction of the pier body of the second section A (namely the upper section formwork in the pier of the first section) → removal of the formwork of No. 1 (namely the lower section formwork in the pier of the first section) to the pier body of the first section B (namely the 1 st section in the pier of the next section), assembly of the pier body formwork of the first section B → construction of the pier body of the first section B → lifting of the fence operation platform to the reserved hole (namely the installation part) at the bottom of the pier body of the first section B, removal of the formwork of No. 2 (namely the upper formwork at the 2 nd section in the pier of the first section) to the pier of the second section B (namely the upper formwork or the 2 nd section in the pier of the next section B → assembly of the pier body formwork of the second section B → construction of the pier body of the second section B → removal of the No. 1 to the pier body of the first section N → assembly of the pier body formwork of the second section → the first section B → the assembly of the pier body of the second section → the second section B → the pier construction platform of the And II, constructing the pier body, namely constructing the pier body in a circulating manner till the pier top.
In this embodiment, the lifting of operation platform adopts the guide chain to hang, and the lifting of template is then to adopt the tower crane. In the construction, the operation platform and the template are respectively lifted, and the safety is high.
The specific sub-process (namely the construction process of each section of pier) is as follows:
1. construction at section A
Measuring and paying-off → forming of I section steel bar of A section → quality inspection → placing of No. 1 template of I section of A section → quality inspection → pouring and vibrating of pier body of I section of A section → forming of II section steel bar of A section → quality inspection → placing of No. 2 template of II section of A section → quality inspection → pouring and vibrating of pier body of II section of A section → curing
2. Construction at section B
B section I section steel bar molding → quality inspection → dismantling A section I section No. 2 formwork to the B section I section position in place → quality inspection → B section I section pier body concrete pouring and vibrating → maintenance → B section II section steel bar molding → quality inspection → dismantling A section II section No. 2 formwork to the B section II section position in place → quality inspection → B section II section pier body concrete pouring and vibrating → maintenance
3. Lifting fence
The method comprises the steps of forming a fence operation platform → erecting the fence operation platform and a laying scaffold plate → constructing the first section and the second section of the pier body of the section A → constructing the first section of the pier body of the section B → lifting the fence operation platform to a reserved hole at the bottom of the first section of the pier body of the section B → arranging a supporting steel bar and supporting the fence operation platform → constructing the second section of the pier body of the section B → constructing the first section of the pier body of the section N → lifting the fence operation platform to a reserved hole at the bottom of the first section of the pier body of the section N → arranging a supporting steel bar and supporting the fence operation platform → constructing the second section of the.
The operation in this embodiment is as follows:
1. the pier body concrete is pumped, other materials are vertically transported by a tower crane, and constructors adopt construction elevators from top to bottom.
2. The plate turning template is divided into two sections, each section is 3m high, and the height of cast-in-place concrete at each time in the circulation stage is 3 m. The surface, the back rib and the transverse belt of the template are determined by checking calculation, so that the rigidity and the flatness of the template are ensured.
3. The arrangement of the bottom beams of the fence operation platform, the design of the steel pipe scaffold and the diameter and the number of the steel bars supported by the preformed holes must be checked, and the safety and the stability of the fence operation platform are ensured.
4. The lifting of the fence operation platform is synchronously and slowly lifted by four guide chains in a hanging mode, and the tonnage of the guide chains is determined and must be checked to ensure the safety of the guide chains.
5. When the pier shaft preformed hole is used for bearing, the strength of the concrete at the position needs to reach over 75 percent of the designed strength.
6. The template positioning is controlled by matching a total station longitudinal and transverse axis method with four corner fixed points, and the lifting fence operation platform is controlled by adopting the total station longitudinal and transverse axis verticality.
In the utility model, independent operation is carried out when the operation platform and the template are lifted, namely four corners of the operation platform are suspended through four guide chain connecting devices; the two sets of scaffolds form two operating platforms respectively, and in the process of turning over the formwork, the lifting speed of the formwork is improved. Among the prior art, the lift of scaffold can be influenced in the lift of template, need all put down scaffold promptly, then put the template and go up and down together on scaffold again.
In this embodiment, need not the concurrent operation, be equipped with the interval between scaffold frame and the template, when the template removed, rely on the interval to realize the rollover, safer, efficiency is higher.
Certainly, in this embodiment, the formwork can also use three sections of formworks, and two sections of formworks are selected because, compared with three sections of formworks, the two sections of formworks are assembled faster before and after construction (because one section of formwork is saved), the two sections of formwork turnover also have three sections, mainly speed and concrete strength are formed, for example, in winter, strength is formed slowly, and three sections are needed to be better; if three-section templates are adopted, the strength requirement of the steel bar is high, and the corresponding height of the scaffold needs to be increased
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A template system for high pier construction is used for thin-wall hollow high pier construction; it is characterized by comprising:
the template system comprises an inner template and an outer template, the outer template forms a cavity structure in a surrounding mode, the inner template is arranged in the cavity structure, and a cavity to be poured is formed between the inner template and the outer template;
the formwork lifting device comprises a first lifting device connected with the inner formwork and a second lifting device connected with the outer formwork; in the high pier construction, the formwork lifting device is respectively used for lifting the inner formwork and the outer formwork;
the inner operating platform is arranged in the inner template;
the outer operating platform is arranged on the periphery of the outer template;
the lifting device comprises a first lifting device for controlling the inner operating platform to lift and a second lifting device for controlling the outer operating platform to lift;
when the high pier is constructed and turned over, the template lifting system is used for lifting the template, and the lifting device is respectively used for lifting the inner operating platform and the outer operating platform.
2. The formwork system for high pier construction, according to claim 1, wherein a first operating gap is provided between the inner formwork and the inner operating platform, the inner formwork is lifted by the over-mold through the first operating gap, and the first operating gap is 28-35 mm.
3. The formwork system for high pier construction, according to claim 1, wherein a second operating gap is provided between the outer formwork and the outer operating platform, the outer formwork is lifted by the over-moulding through the second operating gap, and the second operating gap is 28-35 mm.
4. The formwork system for high pier construction according to claim 1, further comprising a support steel bar supporting the inner operation platform, wherein two ends of the support steel bar penetrate through the cavity to be poured and the ends are exposed.
5. The formwork system for high pier construction according to claim 4, wherein bottom beams are respectively arranged at the bottoms of the inner operating platform and the outer operating platform, both bottom beams are of a frame structure, and both bottom beams are supported by a common supporting steel bar.
6. A formwork system for high pier construction according to claim 1, wherein the height of the outer work platform is higher than the height of the inner work platform, and the inner work platform is 3-5 times the height of the formwork system.
7. The formwork system for high pier construction according to claim 6, wherein the outer operation platform comprises a plurality of scaffolds, the plurality of scaffolds are connected by a bowl buckle to form an enclosed space, and the formwork system and the inner operation platform are both arranged in the enclosed space.
8. The formwork system for high pier construction according to claim 7, wherein the scaffold comprises a base, vertical rods, cross rods and cross braces, ends of the vertical rods are respectively fixed to the base, the cross rods are arranged on the vertical rods in parallel, two ends of each cross rod are respectively connected with two adjacent vertical rods, at least three cross rods form a group, and one cross brace is arranged on each group.
9. A formwork system for high pier construction according to claim 8, wherein the distance between the cross bars is 30-50 cm.
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|---|---|---|---|
| CN201920868367.3U CN211113187U (en) | 2019-06-11 | 2019-06-11 | Template system for high pier construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920868367.3U CN211113187U (en) | 2019-06-11 | 2019-06-11 | Template system for high pier construction |
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