CN110080118A - Vertical transport for slding form operation rises system and its construction method certainly - Google Patents
Vertical transport for slding form operation rises system and its construction method certainly Download PDFInfo
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- CN110080118A CN110080118A CN201910479346.7A CN201910479346A CN110080118A CN 110080118 A CN110080118 A CN 110080118A CN 201910479346 A CN201910479346 A CN 201910479346A CN 110080118 A CN110080118 A CN 110080118A
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- 238000010276 construction Methods 0.000 title claims abstract description 67
- 238000009415 formwork Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 78
- 239000010959 steel Substances 0.000 claims description 78
- 239000002002 slurry Substances 0.000 claims description 34
- 238000009751 slip forming Methods 0.000 claims description 25
- 230000002787 reinforcement Effects 0.000 claims description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 239000011440 grout Substances 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 239000004035 construction material Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 230000007704 transition Effects 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 235000003826 Artemisia Nutrition 0.000 description 2
- 235000003261 Artemisia vulgaris Nutrition 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 244000030166 artemisia Species 0.000 description 2
- 235000009052 artemisia Nutrition 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241000380450 Danaus melanippus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention belongs to the construction methods that a kind of vertical transport of slding form operation rises system certainly.System is made of the vertical transit system of slding form operation and assembly type sliding formwork lifting system.Method is to substitute tower crane with the vertical transit system and hoist engine of slding form operation to transport material to promotion sliding formwork job platform, realizes the promotion certainly to sliding formwork job platform is promoted with assembly type sliding formwork lifting system.The bridge pier body that the present invention solves construction is more, and the tower crane used is more, and the problem that construction cost is big and construction speed is slow has structure simple, light-weight, convenient, flexible, adaptable, construction speed is fast, it is time saving and energy saving, at low cost, the advantage that construction quality is good and safety is good.
Description
Technical Field
The invention belongs to a vertical transportation self-lifting system for slip form construction and a construction method thereof.
Background
In bridge engineering, when a bridge pier column (or called a pier body) is high in height and large in span, most of the lower structure of the bridge pier column adopts a hollow thin-wall pier form. The construction of the hollow thin-wall pier can be carried out by adopting a slip form operation platform. The existing slip form operation platform adopts a tower crane to finish the transportation of slurry to the upper end surface of a constructed pier body and realize the lifting of the slip form operation platform. Therefore, the more pier bodies are built, the more tower cranes are used, and the construction cost is greatly increased; on the other hand, the tower crane is positioned on the upper end surface of the bridge pier body, so that the operation space of the construction surface of the high pier is narrow, the construction quality is influenced, and the safety of personnel is harmed; meanwhile, the construction conditions are severe in mountainous and heavy-hilly areas where the pier bodies are constructed, the tower crane is large in size, heavy in weight and not beneficial to installation and transportation, the number of tower cranes is large, the transition times are frequent, the transition comprehensive cost is high, and the overall construction progress is restricted. If the Chinese medicinal preparation is located in the village artemisia town of Dong nationality of Guizhou Dongyuan nationality of Guizhou province, the starting point pile number K73+947.0 and the terminal point pile number K79+502.4, wherein the white tiger mountain No. 1 bridge is located at the west side of the eight sister villages of the village artemisia town, the central pile number K75+174 and the bridge length 494.00m, and the number of holes and the span are as follows: 12 multiplied by 40, wherein the piers No. 6 to 10 are all constructed with high piers, the number of the piers is as many as 16, and the highest pier is 76.6 m. The preliminary estimation only occupies the comprehensive cost of the tower crane and the tower crane transition, which accounts for 15 percent of the total construction cost, and the total construction progress needs to be delayed by one time compared with the plan. Therefore, the problems that the more pier bodies are constructed, the more tower cranes are used, the higher construction cost is, and the construction progress is slow need to be solved urgently.
Disclosure of Invention
The invention aims to design a vertical transportation self-lifting system for slip form construction and a construction method thereof, solves the problems of high construction cost and low construction progress due to more used tower cranes and more pier bodies for construction, and has the advantages of simple structure, light weight, convenience, flexibility, strong adaptability, high construction progress, time and labor conservation, low cost, good construction quality and good safety.
Therefore, the vertical transportation self-lifting system for sliding formwork construction comprises a vertical transportation system for sliding formwork construction and an assembled sliding formwork lifting system, wherein:
vertical transportation system of slipform construction: the lifting device is used for lifting slurry and materials to the sliding-mode operation platform. The vertical transportation system for slip form construction consists of a portal lifting support frame, a steel wire rope, a lifting hook, a pulp hopper, a roller, a speed reducer, a motor, a left turning pulley, a right turning pulley and a lower turning pulley. The door-shaped lifting support frame is formed by fixing the lower ends of two door hanger support columns which are arranged at intervals on the transverse central axis of the slip form operation platform and the main body frame of the slip form operation platform at the corresponding position into a whole. The upper ends of the two gantry crane supporting columns extend upwards to the upper end of the pier body reinforcement framework to be constructed. The lower end of the middle part of the hanging beam is fixed with the top ends of the two gantry crane supporting columns at the corresponding positions into a whole, and the two ends of the upper part of the hanging beam are respectively provided with a left steering pulley and a right steering pulley. And a lower steering pulley is arranged on the pier base on one side of the pier body at the lower end corresponding to the right steering pulley or the left steering pulley. A winch base is fixed on the ground corresponding to one side of the lower diverting pulley. The roller is located the front end of hoist engine base, and the motor passes through the reduction gear and drives the cylinder rotation. One end of a steel wire rope is fixed on the roller, and the other end of the steel wire rope sequentially bypasses the lower steering pulley, then upwards bypasses one side of the pier body to be constructed, bypasses the right steering pulley, or traverses the upper end of the steel reinforcement framework of the pier body to be constructed from the hanging beam by the left steering pulley, and then bypasses the left steering pulley, or downwards bypasses the right steering pulley, and is connected with the grout hopper positioned at the other side of the pier body to be constructed from the other side of the pier body to be constructed through the lifting hook.
Assembled slipform lift system: the lifting device is used for lifting the sliding mode operation platform. The assembled sliding formwork lifting system consists of a self-elevating support pillar, a transverse connecting column, an inclined bottom reinforcing column, a supporting cross beam, a hand-pulling lifting device, a lifting ring, a bottom fixing fin and a support base. The support base is in an annular shape, and a slot for inserting and fixing the lower end of the self-elevating support column is formed in the transverse central axis of the support base. The bracket base is provided with corresponding bolt fixing holes corresponding to the screw holes on the lower end of the inclined bottom reinforcing column and the bottom fixing fin. The lower ends of two self-elevating support columns arranged at intervals are inserted into slots on the corresponding support bases. Bottom fixing fins are fixedly arranged on two sides of a self-elevating frame support column positioned on the upper end of the slot and on the support base surface, and bolt fixing holes are formed in the bottom fixing fins and correspond to screw holes in the support base. Inclined bottom reinforcing columns are arranged between the lower parts of the two sides of the two self-lifting frame supporting columns and the corresponding side edges of the support base, and the upper parts and the lower parts of the inclined bottom reinforcing columns are connected with the two side surfaces of the corresponding positions of the self-lifting frame supporting columns and bolt fixing holes arranged on the support base through bolts. The plurality of transverse connecting columns are fixed between the two self-elevating frame supporting columns at intervals. The lower end of the middle part of the supporting beam is fixed with the top end of the self-lifting frame supporting column at the corresponding position into a whole, and two ends of the supporting beam are respectively provided with a lifting ring for clamping and fixing a lifting hook of a hand-pulling lifting device. An inclined upper reinforcing column is arranged between the lower parts of the two ends of the supporting beam and the upper part of the corresponding self-elevating frame support. The lifting hooks of the two hand-pulling hoists are respectively clamped on the lifting rings on the corresponding sides, the lifting chains of the hand-pulling hoists are respectively hooked on the lifting beams at the corresponding positions of the lower ends through steel hooks, and the support base is placed on the upper end face of the construction pier body.
And a pier body to be constructed is arranged between the two gantry crane supporting columns. And the two ends of the hanging beam extend out of the transverse outer ends of the sliding mode operation platforms at the corresponding positions. And an inclined strut is arranged between the lower end of the hanging beam and the upper parts of the two gantry crane supporting columns. The slurry hopper and the lower steering pulley are respectively positioned on two side edges of the pier body. The supporting beam of the self-elevating support post is positioned at the upper end of the hanging beam, and the distance between the supporting beam and the hanging beam is greater than the lifting height of the sliding mode lifting operation platform.
A construction method of a vertical transport jack-up system for slip form construction, comprising the steps of:
(1) and respectively preparing each part of the vertical transportation system and the assembled sliding formwork lifting system for sliding formwork construction according to the size of the designed pier. Preparing two hand-pulling cranes, preparing an outer side template, an outer main template, an inner side template and an inner main template for lifting the slip form operation platform and constructing a pier, reinforcing steel bars for a reinforcing steel bar framework, fixing bolts, gaskets and construction materials.
(2) And (3) transporting the prepared system component and construction materials to a construction site, installing a lifting slip-form operation platform at the upper end of the pier base around the periphery of the constructed pier body, fixing the lower ends of two gantry crane supporting columns of the portal-shaped lifting support frame and a main body frame on the transverse central axis of the slip-form operation platform into a whole, and fixing the lower end of the portal-shaped lifting support frame on the transverse central axis of the slip-form operation platform. The pier body to be constructed is arranged between the two gantry crane supporting columns.
(3) A right steering pulley corresponding to one side of a hanging beam at the upper end of the portal-shaped lifting support frame, or a lower steering pulley fixedly arranged on a pier base at one side of a pier body at the lower end of the left steering pulley, and a winch base corresponding to one side of the lower steering pulley and fixedly arranged on the ground. The roller is located the front end of hoist engine base, and the motor passes through the reduction gear and drives the cylinder rotation. One end of a steel wire rope is fixed on the roller, and the other end of the steel wire rope sequentially bypasses the lower steering pulley, then upwards bypasses one side of the pier body to be constructed, bypasses the right steering pulley or the left steering pulley, traverses the upper end of the steel reinforcement framework of the pier body to be constructed, and then bypasses the left steering pulley or the right steering pulley, and is downwards connected with the grout hopper positioned at the other side of the pier body to be constructed through the lifting hook from the other side of the pier body to be constructed.
(4) And an outer side template, an outer main template, an inner side template and an inner main template are respectively installed on the inner periphery and the outer periphery of the steel reinforcement framework of the pier body to be constructed on the lifting slip form operation platform. A space for building a hollow bridge pier body is formed between the inner template and the outer template. The steel bar frameworks of the bridge pier body are positioned in the space to be built, and the upper ends of the steel bar frameworks are higher than the upper end surface of the outer main template.
(5) The slurry hopper is used for containing concrete pouring mortar, and the lifting hook on the steel wire rope at the end is hooked on the lifting hole in the middle of the upper end of the slurry hopper. And starting a motor fixed on a winch base, driving a roller to rotate by the motor through a speed reducer, shortening a steel wire rope between a slurry hopper and the roller by the rotating roller, and lifting the slurry hopper upwards to the upper part of a to-be-built space at the lower end of an upper hanging beam of the sliding mode operation platform along a left steering pulley or a right steering pulley at the upper end of the slurry hopper. And (3) introducing the concrete pouring mortar flowing out from a discharge opening at the lower end of the mortar hopper into the space to be poured by using the sliding plate guide groove, and pouring concrete into the space to be poured, which is enclosed by the outer main template, the inner main template and the upper end surface of the bridge pier as the bottom surface. And then, the roller rotates reversely to lengthen the steel wire rope between the slurry hopper and the roller, the slurry hopper is put on the ground again, the slurry hopper is filled with the concrete again, the concrete pouring is completed in the space to be built, and the integral self-lifting of the slip form operation platform is carried out after the solidification period of the poured concrete.
(6) The lifting slip form operation platform and the whole body of the door-shaped lifting support frame on the lifting slip form operation platform are lifted automatically:
(a) the slurry hopper is placed on the ground, and the slurry hopper is unloaded from a lifting hook of the steel wire rope, and the steel wire rope is in a loose state.
(b) And placing a support base on the upper end face of the pier body at the inner side or the outer side of the steel reinforcement framework on the upper end face of the pier which is subjected to concrete pouring. The lower bottom surface of the bracket base is pressed down on the upper end surface of the pier body, the annular outer side edge or the inner side edge of the bracket base is supported against the side edge of the corresponding steel reinforcement framework, and the assembled sliding formwork lifting system is assembled on the bracket base.
(c) And respectively clamping and fixing the lifting hooks of the two hand-pulling hoists on the lifting rings on the corresponding sides of the supporting cross beam. The lifting chains of the hand-pulling lifting device are respectively hooked on the lifting beams at the corresponding positions of the lower ends through steel hooks, and the two persons respectively and synchronously pull the hand zippers of the hand-pulling lifting device to enable the lifting chains to be in a load-bearing state.
(d) And loosening the fastening device of the slip form operation platform and the pier body to enable the slip form operation platform to be in a free state which is only hung by the hoisting chain.
(e) Two persons respectively and synchronously pull the hand zippers of the hand-pulling cranes to drive the lifting chains of the hand-pulling cranes and the lifting beams on the hand-pulling cranes to advance to drive the slip form operation platform to synchronously rise to the upper end surface of the pier body to be constructed at the upper part. And then fastening the fastening device of the slip form operation platform with the pier body at the corresponding position. Two persons synchronously loosen the lifting chain of the hand-pulling lifter respectively and disassemble the assembled sliding mode lifting system. The long steel bar framework is connected by steel bars and steel bar extension pipes, and then the hanging beams at the upper ends of the portal lifting support frames are used as supporting beams to fix the hanging hooks of the two hand-pulling cranes. And sequentially hoisting upwards by using a hoisting chain of the hand-pulling hoist and installing an outer side template, an outer main template, an inner side template and an inner main template on the upper end surface of the pier body to be constructed so as to enable the slip form operation platform and the upper end surface of the pier body to be in a construction-waiting state again. The integral self-lifting of the sliding mode lifting operation platform and the door-shaped lifting support frame on the sliding mode lifting operation platform is completed.
(7) And (5) repeating the steps (4), (5) and (6) in sequence until the pouring construction of the pier body is completed, dismantling the assembling equipment and the assembly, and transporting to the next construction site for re-assembling construction.
The sliding mode operation platform and the door-shaped lifting support frame on the sliding mode operation platform synchronously move upwards in the same direction and horizontally.
The upper end surface of the pier body supports the lower bottom surface of the support base, and the inner side surface of the bottom of the steel reinforcement framework at the corresponding position of the upper end surface of the pier body or the outer side edge or the inner side edge of the support supporting the pier body is supported by the inner side surface. The dismantling and assembling equipment and the assembly can be completed by a ground crane.
The above system and method achieve the objectives of the present invention.
The invention solves the problems of high construction cost and low construction progress caused by more constructed pier bodies (including hollow thin-wall pier bodies) and more used tower cranes, and has the advantages of simple structure, light weight, convenience, flexibility, strong adaptability, high construction progress, time and labor conservation, low cost, good construction quality and good safety.
(1) The invention can replace a tower crane to be used for vertical transportation of slip form construction and lifting of a slip form operation platform, does not need large transportation and matching construction of tower crane equipment, saves the rental cost and the transition cost of the tower crane, and accelerates the construction progress of a high pier bridge body. Compared with the traditional tower crane, the construction time of the invention is shortened by 60 percent, the lifting cost only accounts for 0.5 percent of the total construction cost, and the construction cost is reduced by 40 percent.
(2) The invention has no hydraulic lifting system, can be lifted by manpower and a hand-pulling lifting device (commonly called as a hoist), and can be suitable for construction conditions with severe natural conditions. The device can be transported dispersedly, assembled on site, assembled conveniently and flexibly, light in weight, fast in construction progress, time-saving and labor-saving, and low in construction cost.
(3) The safety coefficient of the invention is obviously improved. According to the slip form construction platform, vertical transportation of slip form construction can be completed through the winch located on the ground, and the equipment of the winch is located on the ground, so that the weight of the slip form operation platform is greatly reduced, the slip form operation platform can be lifted without a tower crane, the construction area of the slip form operation platform is large and wide, and the construction safety factor is remarkably improved.
(4) The invention can use local materials and save cost. Both the door-shaped lifting support frame and the assembled sliding-mode lifting system can be processed and manufactured by using excess materials such as angle steel and section steel with good quality on the ground, so that the manufacturing cost is saved, and the energy-saving and environment-friendly effects are good.
Drawings
Fig. 1 is a schematic structural view of a using state of a vertical transportation system for slipform construction of the present invention.
Fig. 2 is a schematic structural diagram of an assembled sliding-mode lifting system according to the present invention in a use state.
Fig. 3 is a partial structural view of the self-elevating frame column and its accessories according to the present invention.
Detailed Description
As shown in fig. 1 to 3, a vertical transport jack-up system for slip form construction includes a vertical transport system for slip form construction and an assembled slip form lifting system, wherein:
vertical transportation system of slipform construction: for lifting the slurry and material to the slipform work platform 18. The vertical transportation system for slip form construction consists of a portal lifting support frame, a steel wire rope 14, a lifting hook 11, a pulp hopper 17, a roller 12, a speed reducer 7, a motor 8, a left steering pulley 1, a right steering pulley 4 and a lower steering pulley 15. The roller, the reducer, the motor, the winch base 13 and the operating rod 6 are of a winch structure, and the winch is a product purchased in the market, so the description is omitted.
The portal lifting support frame is formed by fixing the lower ends of two portal crane support columns 9 arranged at intervals on the transverse central axis of the slip form operation platform and the main body frame of the slip form operation platform 18 at the corresponding position into a whole; namely: and welding the lower end of the gantry crane supporting column and the main body frame of the sliding mode operation platform at the corresponding position into an integral structure. The upper ends of the two gantry crane supporting columns extend upwards to the upper end of the pier body reinforcement framework 10 to be constructed, so that slurry can be conveniently discharged to the pier body to be constructed. The distance from the upper end of the steel reinforcement framework of the pier body to be constructed to the upper end of the gantry crane support column is larger than the height of the grout hopper.
The lower end of the middle part of the hanging beam 3 is fixed with the top ends of the two door hanger supporting columns at the corresponding positions into a whole in a welding mode. The two ends of the upper part of the hanging beam are respectively provided with a left steering pulley and a right steering pulley. A lower diverting pulley 15 is provided on the pier base 16 on the side of the pier body 19 at the lower end corresponding to the right diverting pulley. A winch base 13 is fixed on the ground corresponding to one side of the lower diverting pulley. The cylinder is located the front end of hoist engine base, and the motor passes through the reduction gear and drives the cylinder rotation, and action bars 6 control the positive and negative rotation of cylinder, for the hoist engine is from taking the function. One end of a steel wire rope is fixed on the roller, and the other end of the steel wire rope sequentially bypasses the lower steering pulley, then upwards bypasses one side of the pier body to be constructed, bypasses the right steering pulley, then transversely crosses the upper end of the steel bar framework of the pier body to be constructed from the hanging beam, bypasses the left steering pulley, and downwards passes through the other side of the pier body to be constructed, and is connected with a grout hopper positioned on the other side of the pier body through a lifting hook. Obviously, one side of the pier body where the lower steering pulley is located can be selected as required, namely, the lower steering pulley can also be arranged on a pier base on one side of the pier body at the lower end corresponding to the left steering pulley, the winch is located on one side of the lower steering pulley, one end of the steel wire rope is fixed on the roller, the other end of the steel wire rope sequentially bypasses the lower steering pulley, then upwards bypasses the left steering pulley from one side of the pier body to be constructed, then transversely crosses the upper end of the reinforcement cage of the pier body to be constructed from the hanging beam, then bypasses the right steering pulley, and is connected with the grout hopper located on the other side of the pier body to be constructed downwards through the lifting hook from the other side of the pier body.
And a pier body 5 to be constructed is arranged between the two gantry crane supporting columns. The two ends of the hanging beam extend out of the transverse outer ends of the sliding mode operation platforms at the corresponding positions so as to ensure that the lifting of the pulp hopper is not influenced. And an inclined strut 2 is arranged between the lower end of the hanging beam and the upper parts of the two gantry crane supporting columns so as to strengthen the strength and stability of the hanging beam and the two gantry crane supporting columns.
The slurry hopper and the lower steering pulley are respectively positioned on two side edges of the pier body. The wheel shafts on two sides of the lower steering pulley can be arranged at the upper end of the pulley yoke in a shaft mode, the lower end of the pulley yoke is fixedly welded on the upper end face of the pulley shaft seat, the pulley shaft seat is fixed on the pier base through a ground bolt, the wheel shafts on two sides of the left or right steering pulley can be arranged at the upper end of the pulley yoke in a shaft mode in the same way, and the lower end of the pulley yoke is fixedly welded at two ends of the corresponding hanging beam.
Assembled slipform lift system: the lifting device is used for lifting the sliding mode operation platform. The assembled sliding formwork lifting system consists of a self-lifting frame support 23, a transverse connecting column 22, an inclined bottom reinforcing column 29, a supporting beam 20, a hand-pulling lifting device 25 (commonly known as a lifting block), a lifting ring 24, a bottom fixing fin 34 and a bracket base 35. The support base is annular, and the support base is made of cast iron, and is 25-35 cm wide and 20-25 cm high. The support base is an annular body and is adapted to the peripheral surface of the upper end surface of the hollow thin-wall pier body.
And a slot 36 for inserting the lower end of the self-elevating support column is arranged on the transverse central axis of the support base, and the depth of the slot is about 15 cm. The bracket base is provided with corresponding bolt fixing holes 37 corresponding to the screw holes 31 on the lower end of the inclined bottom reinforcing column and the bottom fixing fin.
When the lower ends of two self-elevating frame support columns arranged at intervals are inserted and fixed in the slots on the corresponding support base; bottom fixing fins are fixedly arranged on two sides of a self-elevating frame support column positioned on the support base surface at the upper end of the slot, and bolt fixing holes are arranged on the bottom fixing fins corresponding to screw holes on the support base; bolts are respectively inserted into the screw holes to be in threaded connection with corresponding bolt fixing holes on the support base, and the lower end and the bottom fixing fins of the self-elevating support are fixed with the middle part of the support base into a whole. One end of the bottom fixing fin is connected with the two sides of the corresponding part of the self-lifting frame support into a whole by welding.
Inclined bottom reinforcing columns are arranged between the lower parts of the two sides of the two self-lifting frame supporting columns and the corresponding side edges of the support base, and the upper parts and the lower parts of the inclined bottom reinforcing columns are connected with the two side surfaces of the corresponding positions of the self-lifting frame supporting columns and bolt fixing holes arranged on the support base through bolts. The self-elevating support column, the support base and the inclined bottom reinforcing column form a triangular support form so as to strengthen the strength and the stability of the self-elevating support column. The connection mode of the bolt, the screw hole and the bolt fixing hole (the bolt fixing hole with the internal thread) is suitable for connecting the supporting beam, the transverse connecting column and the self-elevating frame support, so the description is not repeated.
A plurality of transverse connecting posts 22 are fixed at spaced intervals between the two self-elevating frame posts. The lower bending angles at the two ends of the transverse connecting column can form a butt joint part 30, a screw hole is formed in the butt joint part, a bolt fixing hole is formed in the side face of the corresponding position of the self-elevating support column, and a bolt sequentially penetrates through the screw hole in the butt joint part and is in threaded connection with the bolt fixing hole in the side face of the corresponding position of the self-elevating support column to complete connection.
The middle part lower extreme of supporting beam and the top of corresponding department from the frame pillar of rising are fixed as an organic whole, can establish connection otic placode 32 at the middle part lower extreme that corresponds two from the supporting beam on frame pillar top, establish the screw on the connection otic placode, establish the bolt fastening hole from the frame pillar corresponding department side of rising, pass the screw on the connection otic placode with the bolt fastening hole spiro union from the frame pillar corresponding department side of rising in proper order with the bolt, accomplish the connection.
And the two ends of the supporting cross beam are respectively provided with a lifting ring 24 for clamping the lifting hook of the hand-pulling lifter, and the lifting rings can be sleeved at the two ends of the supporting cross beam and then bound with iron wires. An inclined upper reinforcing column 21 is arranged between the lower parts of the two ends of the supporting cross beam and the upper part of the corresponding self-elevating frame support column to reinforce the supporting cross beam. As above, the bolt 33, the screw hole and the bolt fixing hole can be used for connection. The lifting hooks of the two hand-pulling lifting devices are respectively clamped on the lifting rings on the corresponding sides, the lifting chains 27 of the hand-pulling lifting devices are respectively hooked on the lifting beams at the corresponding positions of the lower ends through steel hooks 28, and the support base is placed on the upper end face of the construction pier body.
The supporting beam of the self-elevating support post is positioned at the upper end of the hanging beam, and the distance between the supporting beam and the hanging beam is greater than the lifting height of the sliding mode lifting operation platform.
A construction method of a vertical transport jack-up system for slip form construction, comprising the steps of:
(1) and respectively preparing each part of the vertical transportation system and the assembled sliding formwork lifting system for sliding formwork construction according to the size of the designed pier. Preparing two hand-pulling cranes, preparing an outer side template, an outer main template, an inner side template and an inner main template for lifting the slip form operation platform and constructing a pier, reinforcing steel bars for a reinforcing steel bar framework, fixing bolts, gaskets and construction materials.
(2) And (3) transporting the prepared system component and construction materials to a construction site, installing a lifting slip-form operation platform at the upper end of the pier base around the periphery of the constructed pier body, fixing the lower ends of two gantry crane supporting columns of the portal-shaped lifting support frame and a main body frame on the transverse central axis of the slip-form operation platform into a whole, and fixing the lower end of the portal-shaped lifting support frame on the transverse central axis of the slip-form operation platform. The pier body to be constructed is arranged between the two gantry crane supporting columns.
(3) A right steering pulley corresponding to one side of a hanging beam at the upper end of the portal-shaped lifting support frame, or a lower steering pulley fixedly arranged on a pier base at one side of a pier body at the lower end of the left steering pulley, and a winch base corresponding to one side of the lower steering pulley and fixedly arranged on the ground. The roller is located the front end of hoist engine base, and the motor passes through the reduction gear and drives the cylinder rotation. One end of a steel wire rope is fixed on the roller, and the other end of the steel wire rope sequentially bypasses the lower steering pulley, then upwards bypasses one side of the pier body to be constructed, bypasses the right steering pulley or the left steering pulley, traverses the upper end of the steel reinforcement framework of the pier body to be constructed, and then bypasses the left steering pulley or the right steering pulley, and is downwards connected with the grout hopper positioned at the other side of the pier body to be constructed through the lifting hook from the other side of the pier body to be constructed.
(4) And (3) respectively installing an outer side template, an outer main template, an inner side template and an inner main template on the inner and outer peripheries of the reinforcement cage of the pier body to be constructed on the lifting slip form operation platform by using a traditional method.
The slipform operation platform, the fastening device with the pier body, the outer side template, the outer main template, the inner side template, the inner main template, the winch, the sliding plate guide groove, the steel bar extension pipe, the hand-pulling lifter and the like are all of conventional structures, the use method of the slipform operation platform is also known, and the self-lifting support column, the transverse connecting column, the inclined bottom reinforcing column, the supporting beam, the bottom fixing fin and the like of the vertical transportation system and the assembled slipform lifting system are all made of section steel or columns, such as I-steel, channel steel and the like, so the description is omitted.
A space for building a hollow bridge pier body is formed between the inner template and the outer template. The steel bar frameworks of the bridge pier body are positioned in the space to be built, and the upper ends of the steel bar frameworks are higher than the upper end surface of the outer main template.
(5) The slurry hopper is used for containing concrete pouring mortar, and the lifting hook on the steel wire rope at the end is hooked on the lifting hole in the middle of the upper end of the slurry hopper. And starting a motor fixed on a winch base, driving a roller to rotate by the motor through a speed reducer, shortening a steel wire rope between a slurry hopper and the roller by the rotating roller, and lifting the slurry hopper upwards to the upper part of a to-be-built space at the lower end of an upper hanging beam of the sliding mode operation platform along a left steering pulley or a right steering pulley at the upper end of the slurry hopper. And (3) introducing the concrete pouring mortar flowing out from a discharge opening at the lower end of the mortar hopper into the space to be poured by using the sliding plate guide groove, and pouring concrete into the space to be poured, which is enclosed by the outer main template, the inner main template and the upper end surface of the bridge pier as the bottom surface. And then, the roller rotates reversely to lengthen the steel wire rope between the slurry hopper and the roller, the slurry hopper is put on the ground again, the slurry hopper is filled with the concrete again, the concrete pouring is completed in the space to be built, and the integral self-lifting of the slip form operation platform is carried out after the solidification period of the poured concrete.
(6) The lifting slip form operation platform and the whole body of the door-shaped lifting support frame on the lifting slip form operation platform are lifted automatically:
(a) the slurry hopper is placed on the ground, and the slurry hopper is unloaded from a lifting hook of the steel wire rope, and the steel wire rope is in a loose state.
(b) And placing a support base on the upper end face of the pier body at the inner side or the outer side of the steel reinforcement framework on the upper end face of the pier which is subjected to concrete pouring. The lower bottom surface of the bracket base is pressed down on the upper end surface of the pier body, and the annular outer side edge or the inner side edge of the bracket base is supported against the corresponding side edge of the steel reinforcement framework, so that the bracket base can be supported and fixed. And assembling an assembled sliding mode lifting system on the support base. During assembly, the assembly sequence can be as follows: the lower end of the middle part of the supporting beam is fixed with the top end of a self-lifting frame support column at the corresponding position into a whole, the inclined upper reinforcing column is fixed, a plurality of transverse connecting columns are fixed among the self-lifting frame support columns, the lower end of the self-lifting frame support column is fixed with the support base, and the inclined bottom reinforcing column is fixed.
(c) And respectively clamping and fixing the lifting hooks of the two hand-pulling hoists on the lifting rings on the corresponding sides of the supporting cross beam. The lifting chains of the hand-pulling lifting device are respectively hooked on the lifting beams at the corresponding positions of the lower ends through steel hooks, and the two persons respectively and synchronously pull the hand zippers of the hand-pulling lifting device to enable the lifting chains to be in a load-bearing state.
(d) And loosening the fastening device of the slip form operation platform and the pier body to enable the slip form operation platform to be in a free state which is only suspended by the two hoisting chains.
(e) Preferably, two persons can stand on the upper end surface of the finished abutment respectively, and the two persons respectively and synchronously pull the hand-pulling chains 26 of the hand-pulling cranes to drive the lifting chains 27 of the hand-pulling cranes and the lifting beams on the hand-pulling cranes to drive the slip-form work platform to synchronously rise to the upper end surface of the upper part of the abutment to be constructed. And then fastening the fastening device of the slip form operation platform with the pier body at the corresponding position. Two persons synchronously loosen the lifting chain of the hand-pulling lifter respectively and disassemble the assembled sliding mode lifting system. The long steel bar framework is connected by steel bars and steel bar extension pipes, and then the hanging beams at the upper ends of the portal lifting support frames are used as supporting beams to fix the hanging hooks of the two hand-pulling cranes. And sequentially hoisting upwards by using a hoisting chain of the hand-pulling hoist and installing an outer side template, an outer main template, an inner side template and an inner main template on the upper end surface of the pier body to be constructed so as to enable the slip form operation platform and the upper end surface of the pier body to be in a construction-waiting state again. The integral self-lifting of the sliding mode lifting operation platform and the door-shaped lifting support frame on the sliding mode lifting operation platform is completed.
(7) And (5) repeating the steps (4), (5) and (6) in sequence until the pouring construction of the pier body is completed, dismantling the assembling equipment and the assembly, and transporting to the next construction site for re-assembling construction.
The sliding mode operation platform and the door-shaped lifting support frame on the sliding mode operation platform synchronously move upwards in the same direction and horizontally.
The upper end surface of the pier body supports the lower bottom surface of the support base, and the inner side surface of the bottom of the steel reinforcement framework at the corresponding position of the upper end surface of the pier body or the outer side edge or the inner side edge of the support supporting the pier body is supported by the inner side surface. The dismantling and assembling equipment and the assembly can be completed by a ground crane.
In a word, the invention solves the problems of high construction cost and low construction progress caused by more constructed pier bodies (including hollow thin-wall pier bodies) and more used tower cranes, and has the advantages of simple structure, light weight, convenience, flexibility, strong adaptability, quick construction progress, time and labor conservation, low cost, good construction quality and good safety.
Claims (10)
1. The utility model provides a vertical transportation is from system of lifting for slip form construction, includes the vertical transportation system and the assembled slip form hoist system of slip form construction, its characterized in that: wherein,
vertical transportation system of slipform construction: the vertical transportation system for slip form construction consists of two door-shaped lifting support frames, a steel wire rope, a lifting hook, a grout hopper, a roller, a speed reducer, a motor and a left, a right and a lower steering pulley, wherein the lower ends of the two door-shaped lifting support frames which are arranged at intervals are positioned on the transverse central axis of the slip form operation platform and are fixed with the main body frame of the slip form operation platform at the corresponding position into a whole, the upper ends of the two door-shaped lifting support frames extend upwards to the upper end of a steel bar framework of a pier body to be constructed, the lower end of the middle part of a hanging beam is fixed with the top ends of the two door-shaped lifting support frames at the corresponding position into a whole, the two ends of the upper part of the hanging beam are respectively provided with a left steering pulley and a right steering pulley in a shaft manner, a lower steering pulley is arranged on a pier base at one side of the pier body at the lower end corresponding to the right steering pulley or the left steering pulley, the roller is positioned at the front end of the winch base, the motor drives the roller to rotate through the reducer, one end of the steel wire rope is fixed on the roller, the other end of the steel wire rope sequentially bypasses the lower steering pulley and then upwards moves from one side of the pier body to be constructed, bypasses the right steering pulley, or the left steering pulley traverses the upper end of the steel bar framework of the pier body to be constructed from the hanging beam, and then bypasses the left steering pulley, or the right steering pulley and downwards moves from the other side of the pier body to be constructed to be connected with the grout hopper positioned at the other side of the pier body through the lifting hook;
assembled slipform lift system: the assembled slip form lifting system consists of a self-lifting frame support column, a transverse connecting column, an inclined bottom reinforcing column, a supporting beam, a hand-pulling lifting device, a lifting ring, bottom fixing wings and a support base, wherein the support base is in an annular shape, a transverse central axis of the support base is provided with a slot for inserting and fixing the lower end of the self-lifting frame support column, the support base is provided with corresponding bolt fixing holes corresponding to the screw holes on the lower end of the inclined bottom reinforcing column and the bottom fixing wings, the lower ends of the two self-lifting frame support columns arranged at intervals are inserted and fixed in the slots on the support base at the corresponding positions, the two sides of the self-lifting frame support column positioned on the upper end of the slot are fixedly provided with the bottom fixing wings, the bottom fixing wings are provided with bolt fixing holes corresponding to the support base, the inclined bottom reinforcing columns are arranged between the lower parts of the two sides of the two self-lifting frame support columns and the side edges of the corresponding support base, the upper and lower parts of the inclined bottom reinforcing columns are connected with the two side surfaces, the horizontal spliced pole of several is that the interval is fixed between two from the frame pillar, the middle part lower extreme of supporting beam and the top of the frame pillar that corresponds department from the frame pillar of raising are fixed as an organic whole, the both ends of supporting beam are equipped with respectively and supply the solid rings of hand power hoist's lifting hook card, the both ends lower part of supporting beam and the corresponding frame pillar upper portion from the frame pillar of raising are equipped with the enhancement post that goes up to one side, the lifting hook of two hand power hoist blocks respectively on the rings that correspond the side, the chain of lifting by crane of hand power hoist hooks is established on the hanging beam that the lower extreme corresponds the department respectively through the steel hook, the support base is placed on the up end of construction pier body.
2. The vertical transport jack-up system for slipform construction according to claim 1, wherein: and a pier body to be constructed is arranged between the two gantry crane supporting columns.
3. The vertical transport jack-up system for slipform construction according to claim 1, wherein: and the two ends of the hanging beam extend out of the transverse outer ends of the sliding mode operation platforms at the corresponding positions.
4. The vertical transport jack-up system for slipform construction according to claim 1, wherein: and an inclined strut is arranged between the lower end of the hanging beam and the upper parts of the two gantry crane supporting columns.
5. The vertical transport jack-up system for slipform construction according to claim 1, wherein: the slurry hopper and the lower steering pulley are respectively positioned on two side edges of the pier body.
6. The vertical transport jack-up system for slipform construction according to claim 1, wherein: the supporting beam of the self-elevating support post is positioned at the upper end of the hanging beam, and the distance between the supporting beam and the hanging beam is greater than the lifting height of the sliding mode lifting operation platform.
7. A construction method of a vertical transportation self-lifting system for slip form construction is characterized in that: the method comprises the following steps:
(1) respectively preparing parts of a vertical transportation system and an assembled sliding formwork lifting system for sliding formwork construction according to the size of a designed pier, preparing two hand-pulling lifting devices, preparing an outer side formwork, an outer main formwork, an inner side formwork, an inner main formwork, reinforcing steel bars for a reinforcing steel bar framework, fixing bolts, gaskets and construction materials for lifting a sliding formwork operation platform and the pier construction;
(2) transporting the prepared system component and construction materials to a construction site, installing a lifting slip-form operation platform at the upper end of a pier base around the periphery of a constructed pier body, fixing the lower ends of two gantry crane supporting columns of a gantry crane supporting frame and a main body frame on the transverse central axis of the slip-form operation platform into a whole, fixing the lower end of the gantry crane supporting frame on the transverse central axis of the slip-form operation platform, and arranging the pier body to be constructed between the two gantry crane supporting columns;
(3) a right steering pulley on one side of a hanging beam at the upper end of a lifting support frame corresponding to the shape of a Chinese character 'men' or a lower steering pulley is fixedly arranged on a pier base on one side of a pier body at the lower end of the left steering pulley, a winch base is fixedly arranged on the ground on one side corresponding to the lower steering pulley, a roller is positioned at the front end of the winch base, a motor drives the roller to rotate through a speed reducer, one end of a steel wire rope is fixed on the roller, and the other end of the steel wire rope sequentially bypasses the lower steering pulley, then upwards winds the right steering pulley from one side of the pier body to be constructed, or traverses the upper end of a steel bar framework of the pier body to be constructed, and then downwards bypasses the left steering pulley or the right steering pulley and is connected with a grout hopper positioned on the other side;
(4) an outer side template, an outer main template, an inner side template and an inner main template are respectively installed on the inner periphery and the outer periphery of a steel reinforcement framework of a pier body to be constructed on a lifting sliding formwork operation platform, a space to be built of a hollow pier body is formed between the inner template and the outer template, the steel reinforcement framework of the pier body is positioned in the space to be built, and the upper end of each steel reinforcement framework is higher than the upper end surface of the outer main template;
(5) the slurry hopper is used for containing concrete pouring mortar, a lifting hook on a steel wire rope at the end is hooked on a lifting hole in the middle of the upper end of the slurry hopper, a motor fixed on a winch base is started, the motor drives a roller to rotate through a speed reducer, the rotating roller shortens the steel wire rope between the slurry hopper and the roller, the slurry hopper is lifted upwards along a left steering pulley or a right steering pulley at the upper end of the slurry hopper to the upper part of a space to be poured at the lower end of a hanging beam on a lifting slip form operation platform, a sliding plate guide groove is used for guiding the concrete pouring mortar flowing out from a discharge port at the lower end of the slurry hopper into the space to be poured, the concrete pouring mortar is poured into the space to be poured, which is enclosed by an outer main template, an inner main template and a bridge pier upper end face as a bottom face, the roller rotates reversely to lengthen the steel wire rope between the slurry hopper and the roller, completing concrete pouring in the space to be poured, and lifting the whole slip form operation platform after the solidification period of the poured concrete;
(6) the lifting slip form operation platform and the whole body of the door-shaped lifting support frame on the lifting slip form operation platform are lifted automatically:
(a) placing the pulp hopper on the ground, and unloading the pulp hopper from a lifting hook of a steel wire rope, wherein the steel wire rope is in a loose state;
(b) placing a support base on the inner side of a steel reinforcement framework on the upper end surface of the bridge pier after concrete pouring or on the upper end surface of a bridge pier body on the outer side, pressing the lower bottom surface of the support base down on the upper end surface of the bridge pier body, jacking the annular outer side edge or the inner side edge of the support base and the corresponding side edge of the steel reinforcement framework, and assembling an assembled sliding formwork lifting system on the support base;
(c) the lifting hooks of the two hand-pulling hoists are respectively clamped and fixed on the lifting rings on the corresponding sides of the supporting cross beam, the hoisting chains of the hand-pulling hoists are respectively hooked on the lifting beams at the corresponding positions of the lower ends through steel hooks, and the two persons respectively and synchronously pull the hand zippers of the hand-pulling hoists to enable the hoisting chains to be in a load-bearing state;
(d) loosening the fastening device of the slip form operation platform and the pier body to enable the slip form operation platform to be in a free state which is only hung by the hoisting chain;
(e) two persons respectively and synchronously pull the hand zippers of the hand-pulling cranes to drive the lifting chains of the hand-pulling cranes and the lifting beams on the hand-pulling cranes to advance to drive the slip form operation platform to synchronously rise to the upper end surface of the pier body to be constructed at the upper part, then fastening a fastening device of the slip form operation platform with the pier body at the corresponding position, synchronously loosening lifting chains of the hand-pulling lifting devices by two persons respectively, disassembling the assembled slip form lifting system, connecting a long steel bar framework by using a steel bar and a steel bar extension pipe, fixing lifting hooks of the two hand-pulling lifting devices by using a lifting beam at the upper end of the portal-shaped lifting support frame as a supporting beam, sequentially and respectively lifting upwards by using the lifting chains of the hand-pulling lifting devices and installing an outer side template, an outer main template, an inner side template and an inner main template on the upper end surface of the pier body to be constructed, so that the slip form operation platform and the upper end surface of the pier body are in the state to be constructed again, and the integral self-lifting of the lifting slip form operation platform and the portal-shaped lifting support frame thereon is completed;
(7) and (5) repeating the steps (4), (5) and (6) in sequence until the pouring construction of the pier body is completed, dismantling the assembling equipment and the assembly, and transporting to the next construction site for re-assembling construction.
8. The method of claim 7, wherein: the sliding mode operation platform and the door-shaped lifting support frame on the sliding mode operation platform synchronously move upwards in the same direction and horizontally.
9. The method of claim 7, wherein: the upper end surface of the pier body supports the lower bottom surface of the support base, and the inner side surface of the bottom of the steel reinforcement framework at the corresponding position of the upper end surface of the pier body or the outer side edge or the inner side edge of the support supporting the pier body is supported by the inner side surface.
10. The method of claim 7, wherein: the dismantling and assembling equipment and the assembly can be completed by a ground crane.
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