CN108131024B - Method for repairing tower hall building transfer floor - Google Patents
Method for repairing tower hall building transfer floor Download PDFInfo
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- CN108131024B CN108131024B CN201711318690.5A CN201711318690A CN108131024B CN 108131024 B CN108131024 B CN 108131024B CN 201711318690 A CN201711318690 A CN 201711318690A CN 108131024 B CN108131024 B CN 108131024B
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- 238000006243 chemical reaction Methods 0.000 claims description 30
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- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
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- 238000005259 measurement Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
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Abstract
The invention relates to a method for repairing a transfer beam at a tower hall building transfer floor, which comprises the following steps: constructing a lower connecting node on the lower structural column; constructing an upper connecting node corresponding to the lower connecting node on the upper structural column; hoisting an upper inclined strut to the upper connecting node; hoisting the lower inclined strut to a lower connecting node; connecting hydraulic jacking loading equipment between the upper inclined strut and the lower inclined strut, and loading; and connecting the upper inclined strut and the lower inclined strut during pressure stabilization. The invention adopts the inclined strut structure arranged between the upper structural column and the lower structural column, utilizes the inclined strut structure to transmit the stress between the upper structural column and the lower structural column, forms a new force transmission system, ensures the structural safety of the building, is suitable for the operation in a limited space, does not need large-scale equipment, is simple and convenient to construct compared with the conventional reinforcement.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a method for repairing a tower hall building transfer floor.
Background
For the existing building, after a fire accident occurs, the structure of the building is greatly damaged, if the building is directly abandoned, great waste is caused, and the building is reinforced and repaired, so that the building after the fire accident can still be put into use, and great economic benefit is achieved. However, the damaged structure is difficult to measure by using equipment, that is, the strength of the existing structure cannot be actually measured, so that the repair work is difficult.
The existing repairing and reinforcing method is that a vertical shoring is usually arranged from the ground, the vertical shoring is built to the top layer of a building layer by layer, and each component or structure is repaired from bottom to top so as to improve the structural strength of the component or structure and enable the component or structure to be put into use.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for repairing a tower hall building conversion layer, which solves the problem that the existing method is difficult to be applied to the structural repair of a limited space.
The technical scheme for realizing the purpose is as follows:
the invention provides a method for repairing a transfer beam at a tower hall building transfer floor, which comprises the following steps:
constructing a lower connecting node on a lower structural column which is positioned below the transfer beam and positioned on the outer side;
constructing an upper connecting node corresponding to the lower connecting node at the connecting part of the conversion beam and the upper structural column;
providing an upper inclined strut, hoisting the upper inclined strut to the upper connecting node and fixedly connecting the upper inclined strut with the upper connecting node;
providing a lower inclined strut, hoisting the lower inclined strut to a lower connecting node and fixedly connecting the lower inclined strut with the lower connecting node;
providing hydraulic jacking loading equipment, connecting the hydraulic jacking loading equipment between the upper inclined strut and the lower inclined strut, and loading the upper inclined strut and the lower inclined strut, so that the upper inclined strut is tightly abutted against the upper connecting node, and the lower inclined strut is tightly abutted against the lower connecting node; and
and when the hydraulic jacking loading equipment stabilizes the pressure, the upper inclined strut and the lower inclined strut are connected.
The invention repairs the transfer beam of the tower hall building transfer floor, the transfer beam plays a force transfer role in the original building structure, namely the stress of the upper structure column is transferred to the lower structure column.
The invention further improves the method for repairing the transfer beam at the tower hall building transfer floor, and the method for constructing the lower connection node comprises the following steps:
binding lower node steel bars at the set positions of the lower structural columns, and hooping the lower node steel bars on the peripheries of the lower structural columns;
connecting the lower embedded plate with the lower node steel bars;
erecting a template at the outer side of the lower node steel bar and pouring grouting material;
and after the poured grouting material reaches the design strength, fixedly connecting the lower ear plates on the embedded plates to form lower connection nodes.
The invention further improves the method for repairing the transfer beam at the tower hall building transfer floor, and the method for constructing the upper connection node comprises the following steps:
knocking the set position of the conversion beam flat, and anchoring a chemical anchor bolt part into the conversion beam by using a bar planting method;
providing a side plate, and fixing the side plate on the transfer beam through the chemical anchor bolts;
providing an angle plate, and fixedly arranging the angle plate at the convex angle position of the transfer beam;
providing a batten plate, connecting the batten plate between two adjacent corner plates and partially wrapping the transfer beam; and
providing a circumferential plate, sleeving and adhering the circumferential plate on the upper structure column and placing the circumferential plate at the connecting part of the upper structure column and the conversion beam;
and fixedly connecting the upper ear plate on the side plate to form an upper connecting node.
The invention further improves the repairing method of the transfer beam at the tower hall building transfer floor, and also comprises the following steps:
arranging a first hoisting device at a position, close to the upper connecting node, on a floor slab where the transfer beam is located;
arranging a second hoisting device and a third hoisting device on a structural beam connected with the lower structural column, wherein the second hoisting device and the third hoisting device are positioned on two sides of the lower structural column;
hoisting the upper inclined strut and the lower inclined strut by the first hoisting device, the second hoisting device and the third hoisting device.
The invention further improves the repairing method of the transfer beam at the tower hall building transfer floor, and the hoisting of the upper inclined strut comprises the following steps:
hoisting the upper inclined strut by using the third hoisting device;
then, the upper inclined strut is hoisted to the area between the lower structural column and the conversion beam by using the second hoisting device;
and hoisting the upper inclined strut to the upper connecting node by using the first hoisting device, connecting the upper inclined strut with the upper connecting node in a butt joint manner, and simultaneously keeping the first hoisting device in suspended connection with the upper inclined strut.
The invention further improves the method for repairing the transfer beam at the tower hall building transfer floor, and the hoisting of the lower inclined strut comprises the following steps:
hoisting the lower inclined strut by using the third hoisting device;
and hoisting the lower inclined strut to a lower connecting node of the lower structural column by using the second hoisting device, connecting the lower inclined strut with the lower connecting node in a butt joint manner, and simultaneously keeping the second hoisting device in suspended connection with the lower inclined strut.
The invention further improves the repairing method of the transfer beam at the tower hall building transfer floor, and also comprises the following steps:
providing a connecting plate, and fixedly connecting the connecting plate with the upper inclined strut before the hydraulic jacking loading equipment is loaded;
and when the hydraulic jacking loading equipment is stabilized, the connecting plate is fixedly connected with the lower inclined strut.
The method for repairing the transfer beam at the tower hall building transfer floor is further improved in that a hydraulic pump station and a connecting oil pipe are arranged after hydraulic jacking loading equipment is installed;
and connecting the connecting oil pipe with the corresponding hydraulic jacking loading equipment and a hydraulic pump station, and supplying oil to the hydraulic jacking loading equipment through the hydraulic pump station and the connecting oil pipe to realize loading.
The method for repairing the transfer beam at the tower hall building transfer floor is further improved in that when the hydraulic jacking loading equipment is used for loading, the displacement of the upper connecting node and the lower connecting node is detected, and when the displacement reaches an early warning value, the loading is stopped.
The invention further improves the repairing method of the transfer beam at the tower hall building transfer floor, and also comprises the following steps:
and constructing outer concrete at the joint of the upper inclined strut and the upper connecting node to form a concrete node structure.
Drawings
Fig. 1 is a schematic structural diagram of arrangement of diagonal bracing structures in the method for repairing a transfer beam at a tower hall building transfer floor according to the present invention.
Fig. 2 is a schematic structural diagram of a lower connecting node in the repairing method of the transfer beam at the tower hall building transfer floor according to the present invention.
Fig. 3 is a schematic structural diagram of an upper connecting node in the repairing method of the transfer beam at the tower hall building transfer floor according to the present invention.
FIG. 4 is a cross-sectional view A1-A1 of FIG. 3.
FIG. 5 is a cross-sectional view A2-A2 of FIG. 3.
FIG. 6 is a cross-sectional view A3-A3 of FIG. 3.
Fig. 7 is a schematic structural view of a lower inclined strut used in the repairing method of a transfer beam at a tower hall building transfer floor according to the present invention.
Fig. 8 is a schematic structural view of an upper diagonal brace used in the repairing method of a transfer beam at a tower hall building transfer floor according to the present invention.
Fig. 9 is a schematic structural diagram of a joint of a lower inclined strut and an upper inclined strut used in the repairing method of a transfer beam at a tower hall building transfer floor according to the present invention.
Fig. 10 to 12 are schematic diagrams illustrating an exploded step of hoisting an upper inclined strut in the repairing method of a transfer beam at a tower hall building transfer floor according to the present invention.
Fig. 13 to 15 are schematic diagrams illustrating an exploded step of hoisting a lower diagonal brace in the repairing method of a transfer beam at a tower hall building transfer floor according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the present invention provides a method for repairing a transfer beam at a conversion floor of a tower hall building, wherein the tower hall building has a structure characterized in that upper structural columns and lower structural columns are retracted layer by layer from bottom to top, so that the upper structural columns and the lower structural columns are not arranged correspondingly, the modeling and the function of the building are realized through the conversion floor between the upper structural columns and the lower structural columns, and the transfer beam at the conversion floor is used for connecting the upper structural columns and the lower structural columns to form a stable force transfer system. After the tower hall building is damaged, the repair of the conversion layer becomes difficult, and a repair scheme meeting the performance requirement is difficult to make due to the fact that the effectiveness of the conversion beam structure cannot be measured. And the repairing method of the invention realizes the repairing of the conversion beam at the inner side of the tower top of the conversion layer by utilizing an inclined strut structure and a hydraulic jacking reinforcing technology aiming at the force transmission sequence of the original tower hall building and ensuring the safety of the structure. The method for repairing the transfer beam at the tower hall building transfer floor according to the invention is described below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of arrangement of diagonal bracing structures in the repairing method of a transfer beam at a tower hall building transfer floor according to the present invention is shown. The method for repairing a transfer beam at a tower hall building transfer floor according to the present invention will be described with reference to fig. 1.
As shown in fig. 1, in the repairing method of the transfer beam at the conversion floor of the tower hall building, a plurality of bracing structures 20 are arranged at the conversion floor, the upper structure columns 12 and the lower structure columns 13 are braced by using the bracing structures 20, and the stress of the upper structure columns 12 is transferred to the lower structure columns 13 through the bracing structures 20, so that a stable stress system is formed, and the safety of the structure is ensured.
The invention relates to a method for repairing a transfer beam at a tower top building transfer floor, which comprises the following steps:
as shown in fig. 2, a lower connection node 21 is constructed on the lower structural columns 13 located below the transfer beam 11 and located on the outer side, the lower connection node 21 being disposed on the lower structural columns 13 and facing the upper structural columns 13;
as shown in fig. 3, an upper connecting node 22 corresponding to the lower connecting node 21 is constructed at the joint of the transfer beam 11 and the upper structural column 12, and when the upper connecting node 22 and the lower connecting node 21 are arranged, the upper connecting node 22 and the lower connecting node 21 are ensured to be positioned in parallel, so as to facilitate the installation of a subsequent diagonal brace;
as shown in fig. 8 and 12, an upper inclined strut 23 is provided, and the upper inclined strut 23 is hoisted to the upper connecting node 22 and is fixedly connected with the upper connecting node 22;
as shown in fig. 7 and fig. 15, a lower inclined strut 24 is provided, and the lower inclined strut 24 is hoisted to the lower connecting node 21 and fixedly connected with the lower connecting node 21, at this time, the lower inclined strut 24 and the upper inclined strut 23 are parallel and opposite;
then providing a hydraulic jacking loading device 41, connecting the hydraulic jacking loading device 41 between the upper inclined strut 23 and the lower inclined strut 24, and loading the upper inclined strut 23 and the lower inclined strut 24, so that the upper inclined strut 23 is tightly abutted against the upper connecting node 22, and the lower inclined strut 24 is tightly abutted against the lower connecting node 21; by the loading of the hydraulic jacking loading equipment 41, the upper inclined strut 23 and the lower inclined strut 24 form an effective force transmission structure, and the stress of the upper structural column 12 can be transmitted to the lower structural column 13; when the hydraulic jacking loading equipment stabilizes the pressure, the upper inclined strut 23 and the lower inclined strut 24 are connected, so that the inclined strut structure 20 obliquely supported between the upper structural column 12 and the lower structural column 13 is formed.
The inclined strut structure is arranged between the upper structure column and the lower structure column at the conversion beam of the tower hall building conversion layer, the stress between the upper structure column and the lower structure column is transmitted by the inclined strut structure to form a new force transmission system, the inclined strut structure can realize effective force transmission through hydraulic jacking loading equipment, and the inclined strut structure and the original conversion beam are used as the force transmission structure together to ensure the structural safety of the building.
Firstly, preparing construction preparation before construction, comprising the following steps: familiarizing with drawings, performing on-site review and deepening by matching with a deepening designer, and performing on-site construction after confirmation by a design unit; checking the construction deviation of the original concrete structure, finding the ending of the problem, and determining the size, the number, the position and the installation construction sequence of the inclined strut structure; the novel disc buckle type overhead operation frame is designed and erected, the load of the frame body is strictly controlled, the frame body cannot be used as a bearing frame body, and the frame body can be used after being accepted. And performing measurement lofting, retesting a reference central line and a horizontal line of the original civil engineering, popping an installation control line and an elevation of the inclined strut structure on the cylindrical surface, determining the sizes and the positions of the upper connecting node and the lower connecting node, and performing field construction.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2, the construction lower connection node 21 includes:
binding lower node steel bars 211 at the set positions of the lower structural columns 13, and hooping the lower node steel bars 211 on the peripheries of the lower structural columns 13;
connecting the lower embedded plate 212 with the lower node steel bars 211;
erecting a template on the outer side of the lower node steel bar 211 and pouring grouting material;
after the poured grouting material reaches the design strength, the lower ear plate 213 is fixedly connected to the embedded plate 211, so as to form the lower connection node 21.
When the lower connecting node 21 is constructed, steel bars are bound according to drawing and specification requirements, the lower node steel bars 211 comprise columnar steel bar cages 2111 and special-shaped steel bars 2112, the columnar steel bar cages 2111 are formed by connecting a plurality of annular steel bars and stirrups, the columnar steel bar cages 2111 are sleeved on the periphery of the lower structural columns 13, the special-shaped steel bars 2112 are arranged on the outer sides of the columnar steel bar cages 2111, the special-shaped steel bars 2112 are connected with the columnar steel bar cages 2111 to form an outward convex shape, supporting surfaces are arranged at positions facing the upper connecting nodes 22 and used for arranging the embedded plates 212, the embedded plates 212 are placed on the supporting surfaces of the special-shaped steel bars 2112, and the embedded bars 2121 at the bottoms of the embedded plates 212 are fixedly connected with the special-shaped steel bars 2112 and the columnar steel bar cages 2111. When the lower node bars 211 are provided, the damaged portion of the outer surface of the lower structural column 13 is roughened to form a roughened surface 131, and then the lower node bars 211 are provided. The grouting material is a self-leveling cement-based grouting material, and the lower ear plate 213 is connected after the designed strength is achieved. After the grouting material is poured, a circle of convex cylindrical concrete structure is formed on the periphery of the lower structural column 13, and a convex triangular concrete structure is formed at a position corresponding to the upper connection node 22, and the triangular concrete structure comprises a first inclined surface at the upper part and a second inclined surface at the lower part, and the first inclined surface is used for fixedly connecting the lower ear plate 213. The lower ear plate 213 is welded to the embedded plate 211, and it is necessary to ensure that the lower ear plate 213 is accurately positioned, otherwise the installation of the lower inclined strut 24 is affected, and the welding of the lower ear plate 213 should be performed simultaneously with the welding of the upper ear plate 226.
As another preferred embodiment of the present invention, as shown in fig. 3, the construction upper connection node 22 includes:
knocking the set position of the conversion beam 11 flat, and anchoring the chemical anchor bolt 221 part into the conversion beam 11 by using a bar planting method;
as shown in fig. 4 to 6, a side plate 222 is provided, and the side plate 222 is fixed to the transfer beam 11 by a chemical anchor 221;
providing a corner plate 223, and fixedly arranging the corner plate 223 at the convex angle position of the conversion beam 11;
providing a gusset plate 224 connecting the gusset plate 224 between two adjacent gusset plates 223 and partially wrapping the transfer beam 11; and
providing a circumferential plate 225, sleeving and adhering the circumferential plate 225 on the upper structural column 12 and placing the circumferential plate at the joint of the upper structural column 12 and the conversion beam 11;
an upper ear panel 226 is fixedly attached to the side panel 222 to form the upper connection node 22.
When the upper connecting node 22 is constructed, the loose layer is knocked out, and if the surface is not flat after knocking out, polymer mortar can be adopted for local trimming, so that the surface of the transfer beam 11 is flat; the chemical anchor bolts 221 are fixed on the transfer beam 11 by means of bar planting, the chemical anchor bolts 221 are implanted on the side surface of the transfer beam 11 facing the lower connecting node 21, so as to fix the side plates 222 by using the chemical anchor bolts 221, and the side plates 222 are correspondingly and fixedly arranged at the joint of the two transfer beams 11 and are also the connecting positions of the two transfer beams 11 and the upper structure columns 13. The angle plate 223 and the gusset plate 224 are utilized to partially wrap the conversion beam 11, the angle plate 223 is made of angle steel, the gusset plate 224 is made of strip-shaped steel plates, the angle plate 223 is wrapped at the convex angle of the conversion beam 11, then a plurality of gusset plates 224 arranged at intervals are connected between the two angle plates 223, and the conversion beam 11 is partially wrapped through the gusset plate 224 and the angle plate 223, so that the structural strength of the upper connecting node 22 is improved. In order to improve the reinforcing strength of the hoop plate 225, a reinforcing plate 2252 is fixedly arranged on the floor slab 14 connected to the upper structural column 12, a plurality of stiffening plates 2251 are arranged between the reinforcing plate 2252 and the hoop plate 225, and the stiffening plates 2251 are vertically arranged between the reinforcing plate 2252 and the hoop plate 225 to support the hoop plate 225 and improve the reinforcing strength of the hoop plate 225. The side plates 222 are vertically fixed with stiffening plates 2221, the stiffening plates 2221 are arranged on the side plates 222 side by side at intervals, in order to improve the connection strength of the stiffening plates 2221, the lower surface of the floor slab 14 is fixedly provided with stiffening plates 2223, the stiffening plates 2221 are fixedly connected with the stiffening plates 2223, the end parts of the stiffening plates 2221 are provided with end plates 2222, and the upper ear plates 226 are installed through the end plates 2222.
As another preferred embodiment of the present invention, as shown in fig. 10, the present invention further includes:
arranging a first hoisting device 31 on the floor slab 14 where the transfer beam 11 is located and close to the upper connecting node 22;
arranging a second hoisting device 32 and a third hoisting device 33 on a structural beam 15 connected with the lower structural column 13, wherein the second hoisting device 32 and the third hoisting device 33 are positioned at two sides of the lower structural column 13;
the upper and lower sprags 23 and 24 are hoisted by the first, second and third hoisting devices 31, 32 and 33.
In order to realize the hoisting installation of the upper inclined strut 23 and the lower inclined strut 24 in a limited space, corresponding auxiliary hoisting points are arranged on a building structure, and a hoisting device is installed to finish the hoisting operation.
Further, hoisting the upper inclined strut 23 includes:
as shown in fig. 10 to 12, the upper inclined strut 23 is hoisted by the third hoisting device 33;
then the upper diagonal brace 23 is hoisted to the area between the lower structural column 13 and the transfer beam 11 by using the second hoisting device 32;
and hoisting the upper inclined strut 23 to the upper connecting node 21 by using the first hoisting device 31, connecting the upper inclined strut 23 with the upper connecting node 21 in a butt joint manner, and simultaneously keeping the first hoisting device 31 in hanging connection with the upper inclined strut 23.
As shown in fig. 8, a first hanging ring 231 is provided on the upper inclined strut 23, a hanging rope of the third hoisting device 33 is connected with the first hanging ring 231, and the upper inclined strut 23 is hoisted to a certain height, then the lifting rope of the second hoisting device 32 is connected with the first hanging ring 231, at this time, the connection between the third hoisting device 33 and the first hanging ring 231 is not loosened, the second hoisting device 32 pulls the upper inclined strut 23 to the direction of the upper connecting node 21, and the third hoisting device 33 lowers the length of the hoisting rope, and maintains the stability of the upper inclined strut 23 in the hoisting process, after the upper diagonal brace 23 has been hoisted to the area between the lower structural column 13 and the transfer beam 11, the hoist rope of the first hoisting device 31 is connected to the first hoist ring 231, at which time the connection of the third hoisting device 33 can be released, and then the upper inclined strut 23 is hoisted to the upper connecting node 22 through the matching of the first hoisting device 31 and the second hoisting device 32. The first ear plate 234 is provided at the end of the upper diagonal brace 23, and the first ear plate 234 is connected to the upper ear plate 226 in a butt joint manner, and the pin shaft is used for connection, so that the upper diagonal brace 23 can be accurately positioned by rotating before the pin shaft is fastened. After the connection, the upper brace 23 is fixed at two points by the first hoisting device 31 and the upper connection node 22.
Further, as shown in fig. 13 to 15, the hoisting lower sprag 24 includes:
the lower inclined strut 24 is hoisted by using a third hoisting device 33;
and hoisting the lower inclined strut 24 to the lower connecting node 21 of the lower structural column 13 by using the second hoisting device 32, butting and connecting the lower inclined strut 24 with the lower connecting node 21, and simultaneously keeping the second hoisting device 32 in hoisting connection with the lower inclined strut 24.
Referring to fig. 7, a second hanging ring 241 is arranged on the lower inclined strut 24, a hanging rope of a third hoisting device 33 is connected with the second hanging ring 241, the lower inclined strut 24 is hoisted to a certain height, then the hanging rope of a second hoisting device 32 is connected with the second hanging ring 241, at this time, the connection between the third hoisting device 33 and the second hanging ring 241 is not loosened, the second hoisting device 32 pulls the lower inclined strut 24 to the position of the lower connecting node 21, the third hoisting device 33 lowers the length of the hanging rope, the stability of the lower inclined strut 24 in the hoisting process is maintained, after the lower inclined strut 24 is hoisted to the position of the lower connecting node 21, the lower inclined strut 24 is fixed on the lower connecting node 21, and at this time, the connection of the third hoisting device 33 can be released. The second ear plate 244 is provided at the end of the lower diagonal brace 24, and the second ear plate 224 is connected to the lower ear plate 213 in a butt joint manner, and the pin shaft connection is utilized, so that the lower diagonal brace 24 can be accurately positioned by rotating before the pin shaft is fastened. After the connection, the lower diagonal brace 24 is fixed at two points by the second hoisting device 32 and the lower connection node 21.
Preferably, the first hoisting device 31, the second hoisting device 32 and the third hoisting device 33 are chain blocks.
As another preferred embodiment of the present invention, as shown in fig. 9, the present invention further includes:
providing a connecting plate 25, and fixedly connecting the connecting plate 25 with the upper inclined strut 23 before loading by the hydraulic jacking loading equipment 41;
when the hydraulic jacking loading equipment 41 stabilizes the pressure, the connecting plate 25 is fixedly connected with the lower inclined strut 24.
The upper inclined strut 23 and the lower inclined strut 24 are fixedly connected through a connecting plate 25 to form an integrated force transmission structure. To facilitate the connection of the connection plate 24, as shown in fig. 7 and 8, a first wing plate 233 is provided on the upper inclined strut 23, a second wing plate 243 is provided on the lower inclined strut 24, one end of the connection plate 25 is connected to the first wing plate 233, and the other end of the connection plate 25 is connected to the second wing plate 243, thereby fastening the upper inclined strut 23 and the lower inclined strut 24.
The hydraulic jacking and loading device is characterized in that a first top plate 232 is arranged in the upper inclined strut 23 and used for supporting hydraulic jacking and loading equipment 41, a second top plate 242 is arranged in the lower inclined strut 24 and also used for supporting the hydraulic jacking and loading equipment 41, when the upper inclined strut 23 and the lower inclined strut 24 are hoisted, a first inner sleeve 235 is inserted in the upper inclined strut 23, the hydraulic jacking and loading equipment 41 is installed through the first inner sleeve 235, a second inner sleeve 245 is inserted in the lower inclined strut 24, the hydraulic jacking and loading equipment is arranged in the first inner sleeve 235 and the second inner sleeve 245, two ends of the hydraulic jacking and loading equipment are propped on the first top plate 232 and the second top plate 242, and oil holes are reserved in a gap between the upper inclined strut 23 and the lower inclined strut 24 so as to connect an oil inlet pipeline and an oil outlet pipeline.
After the hydraulic jacking loading equipment 41 is installed, a hydraulic pump station and a connecting oil pipe are arranged;
and connecting the connecting oil pipe with the corresponding hydraulic jacking loading equipment and the hydraulic pump station, and supplying oil to the hydraulic jacking loading equipment through the hydraulic pump station and the connecting oil pipe to realize loading.
When the connecting oil pipe is arranged, the oil inlet pipe is connected firstly, and the oil return pipe is connected. And loading the hydraulic jacking loading equipment 41 by a synchronous stepped pressurization mode.
After the connection is finished, checking whether a line and a signal are normal, and then starting a hydraulic pump station to check whether a PLC synchronous control system is normal; and then carrying out loading debugging, starting the pump stations, carrying out pre-pressurization, respectively supplying oil to hydraulic jacking and loading equipment connected with the two hydraulic pump stations, checking whether the telescopic direction of the hydraulic jacking and loading equipment and the oil pipe leak oil or not, if the direction of the hydraulic jacking and loading equipment is correct, the oil pipe does not leak oil, carrying out formal loading, if the oil pipe leaks oil and the like, immediately replacing the oil pipe, carrying out debugging again, and carrying out formal loading after all indexes are normal.
And (3) carrying out graded setting on each group of loads according to design requirements in the PLC hydraulic synchronous control system, setting the upper pressure limit of each group, grading according to the design loads, and totally dividing into 5 grades for loading. All open 8 control points on the hydraulic power unit, carry out the pressurization operation, the jacking force is set for and is carried out according to the design requirement, observes corresponding displacement change, the record data, after the loading, closes the stop valve, takes off displacement sensor, carries out the field welding construction under steady voltage state simultaneously, it needs to be noted that, is main with force control in the loading process, and displacement control is for assisting, when power does not reach the design requirement, continues the loading to the design requirement. If the displacement difference value reaches the warning value (1mm) and the load does not meet the design requirement, the reason needs to be analyzed on site with a design unit, and the loading construction is continued after the problem is solved.
Preferably, when the hydraulic jacking loading device 41 is loading, the displacement of the upper connecting node 22 and the lower connecting node 21 is detected, and when the displacement reaches an early warning value, the loading is stopped.
Preferably, the hydraulic jacking loading device 41 adopts a jack.
And connecting an upper inclined strut 23 and a lower inclined strut 24, and dismantling the connecting oil pipe and the hydraulic pump station after passing the acceptance check to perform pressure relief work.
As still another preferred embodiment of the present invention, the present invention further includes:
and constructing outer concrete at the joint of the upper inclined strut 23 and the upper connecting node 22 to form a concrete node structure. As shown in fig. 3 and 15, the outer-clad steel bars are disposed at the joints of the upper connection node 22, the upper diagonal brace 23, the upper structure column 12 and the transfer beam 11, and then grouting material is poured to form a concrete node structure wrapping the joints of the upper connection node 22, the upper diagonal brace 23, the upper structure column 12 and the transfer beam 11, so that the strength can be improved, and the appearance is improved. Reserved grouting holes 141 are reserved on the floor slab 14, and grouting materials are poured to the joints of the upper connecting nodes 22, the upper inclined struts 23, the upper structural columns 12 and the transfer beams 11 through the grouting holes 141.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A method for repairing a transfer beam at a tower hall building transfer floor is characterized by comprising the following steps:
constructing a lower connecting node on a lower structural column which is positioned below the transfer beam and positioned on the outer side;
constructing an upper connecting node corresponding to the lower connecting node at the connecting part of the conversion beam and the upper structural column;
providing an upper inclined strut, hoisting the upper inclined strut to the upper connecting node and fixedly connecting the upper inclined strut with the upper connecting node;
providing a lower inclined strut, hoisting the lower inclined strut to a lower connecting node and fixedly connecting the lower inclined strut with the lower connecting node;
providing hydraulic jacking loading equipment, connecting the hydraulic jacking loading equipment between the upper inclined strut and the lower inclined strut, and loading the upper inclined strut and the lower inclined strut, so that the upper inclined strut is tightly abutted against the upper connecting node, and the lower inclined strut is tightly abutted against the lower connecting node; and
and when the hydraulic jacking loading equipment stabilizes the pressure, the upper inclined strut and the lower inclined strut are connected.
2. The method of repairing a transfer beam at a tower hall building transfer level of claim 1, wherein constructing the lower connection node comprises:
binding lower node steel bars at the set positions of the lower structural columns, and hooping the lower node steel bars on the peripheries of the lower structural columns;
connecting the lower embedded plate with the lower node steel bars;
erecting a template at the outer side of the lower node steel bar and pouring grouting material;
and after the poured grouting material reaches the design strength, fixedly connecting the lower ear plates on the embedded plates to form lower connection nodes.
3. The method of repairing a transfer beam at a tower hall building transfer level of claim 1 wherein constructing the upper connection node comprises:
knocking the set position of the conversion beam flat, and anchoring a chemical anchor bolt part into the conversion beam by using a bar planting method;
providing a side plate, and fixing the side plate on the transfer beam through the chemical anchor bolts;
providing an angle plate, and fixedly arranging the angle plate at the convex angle position of the transfer beam;
providing a batten plate, connecting the batten plate between two adjacent corner plates and partially wrapping the transfer beam; and
providing a circumferential plate, sleeving and adhering the circumferential plate on the upper structure column and placing the circumferential plate at the connecting part of the upper structure column and the conversion beam;
and fixedly connecting the upper ear plate on the side plate to form an upper connecting node.
4. The method of repairing a transfer beam at a tower hall building transfer floor of claim 1, further comprising:
arranging a first hoisting device at a position, close to the upper connecting node, on a floor slab where the transfer beam is located;
arranging a second hoisting device and a third hoisting device on a structural beam connected with the lower structural column, wherein the second hoisting device and the third hoisting device are positioned on two sides of the lower structural column;
hoisting the upper inclined strut and the lower inclined strut by the first hoisting device, the second hoisting device and the third hoisting device.
5. The method of repairing a transfer beam at a tower hall building transfer floor of claim 4, wherein hoisting the upper diagonal brace comprises:
hoisting the upper inclined strut by using the third hoisting device;
then, the upper inclined strut is hoisted to the area between the lower structural column and the conversion beam by using the second hoisting device;
and hoisting the upper inclined strut to the upper connecting node by using the first hoisting device, connecting the upper inclined strut with the upper connecting node in a butt joint manner, and simultaneously keeping the first hoisting device in suspended connection with the upper inclined strut.
6. The method of repairing a transfer beam at a tower hall building transfer floor of claim 4, wherein hoisting the lower diagonal brace comprises:
hoisting the lower inclined strut by using the third hoisting device;
and hoisting the lower inclined strut to a lower connecting node of the lower structural column by using the second hoisting device, connecting the lower inclined strut with the lower connecting node in a butt joint manner, and simultaneously keeping the second hoisting device in suspended connection with the lower inclined strut.
7. The method of repairing a transfer beam at a tower hall building transfer floor of claim 1, further comprising:
providing a connecting plate, and fixedly connecting the connecting plate with the upper inclined strut before the hydraulic jacking loading equipment is loaded;
and when the hydraulic jacking loading equipment is stabilized, the connecting plate is fixedly connected with the lower inclined strut.
8. The method for repairing a transfer beam at a tower hall building transfer floor according to claim 1, wherein a hydraulic pump station and a connecting oil pipe are arranged after a hydraulic jacking loading device is installed;
and connecting the connecting oil pipe with the corresponding hydraulic jacking loading equipment and a hydraulic pump station, and supplying oil to the hydraulic jacking loading equipment through the hydraulic pump station and the connecting oil pipe to realize loading.
9. The method for repairing a transfer beam at a tower hall building transfer floor as claimed in claim 1 or 8, wherein the displacement of the upper connection node and the lower connection node is detected when the hydraulic jacking loading device is loaded, and the loading is stopped when the displacement reaches an early warning value.
10. The method of repairing a transfer beam at a tower hall building transfer floor of claim 1, further comprising:
and constructing outer concrete at the joint of the upper inclined strut and the upper connecting node to form a concrete node structure.
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| CN201711318690.5A CN108131024B (en) | 2017-12-12 | 2017-12-12 | Method for repairing tower hall building transfer floor |
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| CN201711318690.5A CN108131024B (en) | 2017-12-12 | 2017-12-12 | Method for repairing tower hall building transfer floor |
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| CN108131024B true CN108131024B (en) | 2020-02-07 |
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| CN109853741B (en) * | 2019-03-29 | 2024-08-27 | 同济大学建筑设计研究院(集团)有限公司 | Core tube structure system with conversion layer |
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