CN114481825A - Support anchorage structure with large height adjustment amount and height adjustment method - Google Patents
Support anchorage structure with large height adjustment amount and height adjustment method Download PDFInfo
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- CN114481825A CN114481825A CN202210210392.9A CN202210210392A CN114481825A CN 114481825 A CN114481825 A CN 114481825A CN 202210210392 A CN202210210392 A CN 202210210392A CN 114481825 A CN114481825 A CN 114481825A
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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Abstract
The invention discloses a support anchorage structure with a large height-adjusting amount and a height-adjusting method, and solves the problems of complex operation, long construction period and limited height-adjusting distance of the conventional structure. The technical scheme includes that the building structure comprises a building structure main body, a pre-buried plate and a support plate which are sequentially arranged from top to bottom, wherein anchorage steel bars are arranged in the building structure main body and the pre-buried plate, and an internal thread hole is formed in the support plate; the front section of the anchorage bolt is provided with external threads, and the rear section is a polished rod; the rear section of the anchorage bolt penetrates through the internal thread hole of the support plate and is inserted into the anchorage steel bar, and the front section of the anchorage bolt is in threaded connection with the internal thread hole of the support plate.
Description
Technical Field
The invention relates to the field of building structures, in particular to a support anchorage structure with a large height adjusting amount and a height adjusting method.
Background
In the construction field, in particular in the case of bridges, the support acts as an independent part between the upper and lower parts of the structure, which supports the weight of the upper part and transmits the horizontal forces. When the foundation part is influenced by geological changes, the design height and the actual height of the structure can be changed, and particularly, geological settlement has a remarkable influence on the flatness of the line. To ensure that the superstructure is usable properly, the overall height of the structure needs to be adjusted in time.
Usually, the adjustment of structure elevation is gone on the support usually, and its structure mainly includes building structure main part, built-in board and the upper bracket board that from top to bottom sets gradually, be equipped with the anchorage bar in building structure main part and the built-in board, after the back end of anchorage bolt inserted and passed the upper bracket board, the screw thread and the anchorage bar threaded connection of bolt. The main height-adjusting mode of the similar structure generally adopts a height-adjusting mode of increasing a steel plate by plugging, and the operation steps are as follows: when the foundation subsides and the elevation of the upper structure is changed greatly and needs to be heightened. Firstly, loosening an anchorage bolt connected with a support and an upper structure, and then jacking up the upper structure by using a jacking device to enable the upper structure and an upper plate of the support to form a void layer; and secondly, stuffing a height-adjusting steel plate with corresponding thickness between the beam body and the support, then replacing the anchorage bolts, finally putting down the beam body, screwing down the support and the beam body anchorage bolts, and finishing the support height-adjusting operation. The following problems exist when the structure is adopted for height adjustment operation:
(1) because the rear section of the anchorage bolt is in threaded connection with the anchorage steel bar, when the height adjustment operation is required, the anchorage bolt is firstly required to be loosened, and when the anchorage bolt is rusted and cannot be loosened due to long-time looseness, the anchorage bolt needs to be forcibly dismantled and replaced. The loosening and replacing processes are difficult, time-consuming and labor-consuming, and the requirement of actual quick operation on site is difficult to meet;
(2) the height adjustment amount of the support standard and the technical requirement used in China at present is usually 0-20 mm, so that the height adjustment amount of the support anchorage bolt is reserved for 20 mm. On one hand, the reserved height-adjusting quantity of the support bolt is small, so that the requirement of the support height adjustment in a large geological settlement area cannot be met, and on the other hand, when the height-adjusting quantity exceeds the designed reserved height-adjusting quantity, the anchorage bolt needs to be replaced;
(3) for the installation of increase backing plate, preformed hole diameter on the backing plate is greater than former support plate aperture usually, leads to the clearance between bolt and the increase backing plate too big, and the bolt is changed into to bear the bending-shear combined action by single shearing force under the effect of horizontal force, leads to the anchorage bolt service behavior to be abominable.
Therefore, a support anchorage structure and a height adjusting method which can realize rapid height adjusting operation, meet the requirement of large height adjustment amount and have stable and reliable structure are needed.
Disclosure of Invention
The invention aims to solve the technical problems and provides a support anchorage structure with a large adjusting quantity, which has the advantages of simple structure, easy operation, good reliability, short construction period and greatly improved adjustable range.
The invention also provides a heightening method using the support anchorage structure, which has the advantages of extremely simple operation, short construction period, good reliability, large heightening range and good flexibility and adaptability.
The invention relates to a support anchorage structure with a large adjusting quantity, which comprises a building structure main body, a pre-buried plate and a support plate, wherein the building structure main body, the pre-buried plate and the support plate are sequentially arranged from top to bottom; the front section of the anchorage bolt is provided with external threads, and the rear section is a polished rod; the rear section of the anchorage bolt penetrates through the internal thread hole of the support plate and is inserted into the anchorage steel bar, and the front section of the anchorage bolt is in threaded connection with the internal thread hole of the support plate.
The front section of the anchorage bolt is in threaded connection with the internal thread hole of the support plate through an adjusting lantern ring; the adjusting lantern ring is provided with an internal thread hole matched with the external thread of the front section of the anchorage bolt and an external thread matched with the internal thread hole of the support plate.
The thickness of the adjusting lantern ring is larger than or equal to that of the support plate.
And the front end face of the adjusting lantern ring is provided with a positioning clamping groove.
The leveling device is characterized by further comprising a leveling lantern ring, wherein the leveling lantern ring is composed of two or more blocks which can be assembled and is used for being additionally arranged on an external thread between a bolt head of an anchor bolt and an adjusting lantern ring when the height is adjusted.
The invention relates to a height adjusting method of a support anchorage structure, which is characterized by comprising the following steps of:
firstly), jacking the building structure main body and the embedded plate to a specified height by adopting a jacking device, so that an anchorage steel bar positioned in the building structure main body and the embedded plate is separated from a rear section polished rod part of an anchorage bolt under the jacking action, and a separation layer is formed between the embedded plate and a support plate;
secondly), filling a height-adjusting steel plate into the void layer, or filling a fluid filler after the coaming is installed and filling the void layer after solidification;
and thirdly), releasing the jacking device to enable the building structure main body and the embedded plate to fall on the heightening cushion layer to finish the heightening operation.
When the adjusting lantern ring is installed in the support anchorage structure, after the jacking operation is completed in the step one), the adjusting lantern ring is continuously screwed in the height-adjusting direction until the rear end face of the adjusting lantern ring is flush with the embedded plate, the adjusting lantern ring is in threaded connection with the anchorage hole of the support plate, the anchorage bolt is screwed, and then the operation in the step two) is performed.
After the operation of the first step) is completed, when the height difference exists between the front end face of the adjusting lantern ring and the surface of the support plate, the positioning clamping groove on the adjusting lantern ring is clamped through the fixing tool, the anchorage bolt is rotated reversely to enable the anchorage bolt to withdraw downwards for a certain distance, then the fixing tool is withdrawn, then the leveling lantern ring is inserted into the internal thread hole where the support plate and the bolt are separated, the internal thread hole is sleeved on the external thread of the anchorage bolt, finally the anchorage bolt is screwed again, and then the operation of the second step) is performed.
Preferably, after the operation of step three) is completed, when the step-up is required again, the operations of step one) to step three) described in claim 6 are repeated once.
Aiming at the problems in the background technology, the inventor changes the threaded connection position of an anchorage bolt, an external thread is arranged at the front section of the anchorage bolt, a polished rod is arranged at the rear section of the anchorage bolt, and the traditional threaded connection between the anchorage bolt and an anchorage steel rod is changed into the threaded connection between the front section of the anchorage bolt and a support plate, and the movable splicing relationship between the rear section and the anchorage steel rod. Through anchorage bolt anterior segment and the reservation threaded connection of bedplate, improve the steadiness of building structure main part, make the polished rod of anchorage bolt back end peg graft with the anchorage rod simultaneously, guaranteed the transmission of power. When the height needs to be adjusted, the polished rod and the anchorage steel rod can be naturally separated, the anchorage bolt does not need to be loosened or even replaced in the whole height adjusting process, the operation difficulty can be greatly reduced, the construction period can be greatly shortened, and loosening of the threaded hole caused by repeated assembly and disassembly is avoided.
Aiming at the condition of large adjusting quantity, after the upper structure is lifted, a large disengaging layer exists between the support plate and the embedded plate, the structure of the adjusting lantern ring can be added in a matching mode, the adjusting lantern ring is driven to continuously screw in towards the direction of the embedded plate by rotating the anchorage bolt until the rear end face of the adjusting lantern ring is contacted with the embedded plate and screwed down, and therefore pre-tightening force is generated to enable the bolt anchorage to only bear horizontal shearing force, extra bending moment caused by lifting of the upper structure is avoided, and stability of the structure is improved.
Furthermore, the thickness of the adjusting ring sleeve is not less than the thickness of the support plate, and the adjusting ring sleeve which is thickened can be designed in advance, so that the adjusting ring sleeve can be adjusted to a designed height in a rotating mode once after being heightened, and a larger adjusting height is met. The invention increases the adjusting height and does not need to replace the anchor bolt.
As another example, if the preset adjusting ring sleeve is screwed down, the front end surface of the leveling lantern ring has a height difference with the surface of the support plate, so that the adjusting lantern ring works in an un-leveled state and interferes with other parts, compared with the problem that the leveling lantern ring is further considered to be added by the inventor, the leveling lantern ring is composed of two or three blocks which can be correspondingly assembled and is used for being additionally arranged on an external thread above the adjusting lantern ring at the upper section of the anchorage bolt during height adjustment, the height adjustment requirement is met, meanwhile, the effect of reducing the gap between the bolt and the support plate without reducing the contact area between the anchorage bolt and the support plate can be achieved, and the horizontal force can be effectively transmitted.
Further, for some cases of the limit height adjustment, when the height adjustment is not achieved by using the above method, the operations of the step one) to the step three) may be repeated once.
Furthermore, in addition to the step-up steel plate is arranged in the void layer to fill the void layer, a mode of pouring a fluid filler after the enclosing plate is installed and then solidifying can be adopted, and the filler can be selected from non-metal materials with higher rigidity after solidification, or alloys with lower melting point, such as non-shrinkage cement mortar, polyurethane, low-melting-point metal gallium alloy and the like. Although the mode of adopting pouring after installing the bounding wall is longer than the mode that adopts the increase steel sheet of plugging in on operation cycle, nevertheless have easy operation, the selectivity of filler is many, material cost is low, and closely knit nature is better, has also avoided the default hole diameter of increaseing the steel sheet to be greater than "the bolt becomes curved-shear combined action by single shear force under the effect of horizontal force, leads to the problem that anchorage bolt service behavior is abominable" that anchorage bolt diameter was brought.
Has the advantages that:
the invention has simple structure, easy operation, good reliability, good stability and can effectively avoid the generation of extra bending moment caused by the lifting of the upper structure; the adjusting method greatly reduces the construction difficulty, shortens the construction period, and greatly enlarges the height adjusting range (the design adjustable range is 0-120mm, and the actual adjusting range depends on the bolt inserting length); the invention has good adaptability and is suitable for concrete or steel structure building structures, including building structures such as buildings or bridges influenced by foundation settlement. But also to different kinds of holders.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a state diagram after jacking in embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
FIG. 4 is a state diagram after adjustment according to embodiment 2 of the present invention.
Fig. 5 is a state diagram after the collar is adjusted to be tightened according to embodiment 3 of the present invention.
FIG. 6 is a schematic structural view of the leveling collar of example 3 of the present invention.
Fig. 7 is a state diagram after jacking in embodiment 4 of the present invention.
Fig. 8 is a state diagram after the tightening of the adjusting collar according to embodiment 5 of the present invention.
Fig. 9 is a state diagram after the step-up according to embodiment 6 of the present invention.
Fig. 10 is a schematic structural view of an anchor bolt.
Fig. 11 is a structural schematic diagram of a thickened leveling collar.
Fig. 12A is a schematic view of a structure formed by two adjusting collars.
Fig. 12B is a schematic view of a structure composed of three adjusting collars.
Fig. 13 is a schematic view of an exemplary installation structure of an anchorage steel rod.
Fig. 14 is a schematic view illustrating an installation structure of an anchorage steel rod suitable for a steel structure as an upper structure.
Figure 15 is a schematic view of a support anchorage structure of the present invention applied to a vertical building structure.
Fig. 16 is a schematic view of the support anchorage structure of the present invention applied to a horizontal building structure.
The anchor plate comprises a support plate (1), an internal thread hole (11), an anchor bolt (2), external threads (21), a polished rod (22), a pre-embedded plate (3), an anchor steel bar (4), an anchor bolt (41), an anchor sleeve (42), an adjusting lantern ring (5), an internal thread hole (51), external threads (52), a positioning clamping groove (53), a building structure main body (6), a heightening steel plate (7), a temporary enclosing plate (8), a filler (9), a leveling lantern ring (10), a block (101) and a support body (A).
Detailed Description
Example 1:
referring to fig. 1-2 and 10-12, in this embodiment, a building structure main body 6, an embedded plate 3 and a support plate 1 are sequentially arranged from top to bottom, an anchor steel bar 4 is arranged in the building structure main body 6 and the embedded plate 3, and an internal threaded hole 11 is formed in the support plate 1; the front section of the anchorage bolt 2 (namely the front section of the bolt is close to the part of the bolt head) is provided with an external thread 21, and the rear section (namely the bolt insertion part) is a polished rod 22; the rear section of the anchorage bolt 2 passes through the internal thread hole 11 of the support plate 1 and is inserted into the anchorage steel bar 4, and the front section of the anchorage bolt is in threaded connection with the internal thread hole 11 of the support plate 1.
The surface of the anchorage bolt 2 can be coated with a layer of anticorrosive paint in a spraying or electroplating mode, a certain gap is formed between the polish rod 22 and the inner wall of the anchorage steel rod 4, sealing lubricating grease is coated on the polish rod, and when the jacking upper structure drives the anchorage steel rod 4 to ascend, the polish rod 22 can be quickly and effectively separated from the anchorage steel rod 4, so that normal use and height adjustment operation of the anchorage bolt 2 are ensured. Preferably, the initial length of the polish rod 22 inserted into the anchorage steel rod 4 should be greater than the "polish rod diameter + the maximum design height adjustment value δ", so that the contact length of the anchorage bolt 2 and the anchorage steel rod 4 after height adjustment is still greater than 1 time of the polish rod 22 diameter. The anchorage steel bar 4 is always buried in the upper structure at the beginning of installation and after being heightened, and the contact area of the polished rod 22 of the anchorage bolt 2 matched with the anchorage steel bar after being heightened still meets the requirement of transmitting horizontal force, so that the structure and the support cannot be stressed badly due to jacking and emptying and reduced stress area.
Referring to fig. 15 and 16, the present invention can be applied to a vertically loaded building structure, and also can be applied to a horizontally loaded building structure, and fills up gaps generated by lateral deformation of a building, which is prior art and will not be described in detail.
When the support is normally used, the horizontal force generated by the upper structure is transmitted downwards from top to bottom through the anchorage steel bar 4, the anchorage bolt 2 and the support plate 1, and is finally transmitted to the foundation. Therefore, when the foundation is settled, the height of the support is required to be adjusted, and the height adjusting method comprises the following steps:
firstly), jacking the building structure main body 6 and the embedded plate 3 to a designed height by adopting a jacking mechanism (such as a jack) so that the anchorage steel bar 4 positioned in the building structure main body 6 and the embedded plate 3 is partially separated from the rear section polished rod 22 of the anchorage bolt 2, and a void layer is formed between the embedded plate 3 and the support plate 1;
secondly) filling the void layer with a height-adjusting steel plate 7 (not shown in the figure);
and thirdly), releasing the jacking mechanism to finish the heightening operation.
The method can be directly used for height adjustment within the range of 0-60 mm.
Example 2:
referring to fig. 3 and 4, unlike embodiment 1: the front section of the anchorage bolt 2 is in threaded connection with the internal thread hole 11 of the support plate 1 through an adjusting lantern ring 5; the adjusting lantern ring 5 is provided with an internal thread hole 51 matched with the front section external thread 21 of the anchorage bolt 2 and an external thread 52 matched with the internal thread hole 11 of the support plate 1.
The procedure for increasing the height was the same as in example 1.
Example 3:
the structure of the support anchorage is the same as that of the embodiment 2.
Referring to fig. 5, the difference from the height adjustment method of embodiment 2 is: after the jacking operation is completed in the step one), the adjusting lantern ring 5 is continuously screwed in the direction of the embedded plate 3 until the rear end face of the adjusting lantern ring 5 is in contact with the embedded plate 3, the front section of the adjusting lantern ring 5 is still in threaded connection with the support plate 1, the anchorage bolt 2 is screwed, and then the operation in the step two) is performed.
In the second step), the temporary enclosing plate 8 is firstly used for enclosing the void layer, then the filler 9 is poured, the filler 9 is made of polyurethane material or low-melting-point alloy in the embodiment, and the temporary enclosing plate 8 is removed after the filler 9 is solidified and molded to reach the designed strength.
The rotation directions of the internal thread 51 of the adjusting lantern ring 5 and the external thread 21 of the anchor bolt 2 can be the same or different. When the rotation directions of the internal thread 51 and the external thread 52 of the adjusting lantern ring 5 are the same, the adjusting lantern ring 5 can be driven to be screwed into the direction of the embedded plate 3 together by rotating the anchor bolt 2; when the rotation directions of the internal thread 51 and the external thread 52 of the adjusting collar 5 are opposite, the adjusting collar 5 provides an acting force opposite to the rotation direction to the rotating anchor bolt 2, so that the anti-loosening effect can be achieved. When the adjusting lantern ring 5 is installed, the limiting tool is used for clamping the positioning clamping groove 53, the adjusting lantern ring 5 is screwed into the direction of the embedded plate 3 and locked, and then the anchorage bolt 2 is screwed into the adjusting lantern ring 5 until the anchorage bolt is screwed down.
The method can be used for height adjustment within the range of 0-80 mm.
Example 4:
referring to fig. 6, the structure of the anchor of the support is the same as that of embodiment 3.
The height adjusting method comprises the following steps: the difference from example 3 is: after the operation of the first step), when the front end face of the adjusting lantern ring 5 has a height difference with the surface of the support plate 1 (lower than the surface of the support plate 1), the positioning clamping groove 53 is clamped through the limiting tool and the adjusting lantern ring 5 is fixed, the anchor bolt 2 is rotated reversely to withdraw outwards for a certain distance, the limiting tool is loosened, then the leveling lantern ring 10 is inserted into the internal thread 11 hole of the support plate 1, two or three blocks 101 of the leveling lantern ring 10 are correspondingly spliced and sleeved on the external thread 21 between the bolt head of the anchor bolt 2 and the adjusting lantern ring 5 (non-threaded connection), the surface of the leveling lantern ring 10 is parallel and level with the surface of the support plate 1, finally the anchor bolt 2 is screwed again, and then the operation of the second step) is performed.
And reversely rotating the anchorage bolt to enable the anchorage bolt to downwards withdraw for a certain distance, withdrawing the fixing tool, inserting a leveling lantern ring into the internal thread hole where the support plate and the bolt are separated, and sleeving the leveling lantern ring on the external thread of the anchorage bolt.
Example 5
Referring to fig. 7 and 8, the support anchorage structure is the same as that of embodiment 3, except that in this embodiment, a thickened adjusting lantern ring 5 is adopted, the thickness of the adjusting lantern ring is larger than that of the support plate 1 (the allowance is a designed height-adjusting parameter), and the exposed surface of the adjusting lantern ring is higher than that of the support plate 1.
The height-adjusting method is the same as that of embodiment 3, except that when the rear end face of the thickened adjusting lantern ring 5 is in contact with the embedded plate 3, the front section of the adjusting lantern ring 5 is still in full-thread connection with the support plate 1, and the exposed surface of the thickened adjusting lantern ring 5 can still be kept flush with the surface of the support plate 1. The use of such a thickened adjusting collar 5 makes it possible to dispense with the mounting of the leveling collar 10.
The structure of the invention can be suitable for matching with different anchorage steel bars 4, such as the anchorage steel bar 4 with the structure shown in fig. 13, which adopts the forms of an anchorage anchor bolt 4 and an anchorage sleeve 42, or the anchorage steel bar 4 with the structure shown in fig. 14 is in a steel structure.
The method of examples 4-5 can be used to adjust the height within the range of 0-120 mm.
Example 6:
referring to fig. 9, the structure of the anchor of the support is the same as that of embodiment 3.
The height adjustment method is the same as that in the embodiment 3, after all the adjustment steps are completed, when the height adjustment requirement is not met, the operations from the step one) to the step three) described in the embodiment 1 are repeated once, or the mode of leveling the lantern ring 10 in the embodiment 2 is adopted, so that the purpose of further height adjustment is achieved.
In the figure, delta 1 is the height after the first heightening, and delta 2 is the height after the second or multiple heightening.
The above-described method of example 6 allows for a turnup in the range of greater than 120 mm.
Claims (9)
1. A support anchorage structure with a large height adjustment amount comprises a building structure main body, a pre-buried plate and a support plate which are sequentially arranged from top to bottom, and is characterized in that anchorage steel bars are arranged in the building structure main body and the pre-buried plate, and an internal thread hole is formed in the support plate; the front section of the anchorage bolt is provided with external threads, and the rear section is a polished rod; the rear section of the anchorage bolt penetrates through the internal thread hole of the support plate and is inserted into the anchorage steel bar, and the front section of the anchorage bolt is in threaded connection with the internal thread hole of the support plate.
2. The support anchorage structure with large height-adjusting capacity of claim 1, wherein the front section of the anchorage bolt is in threaded connection with the internal threaded hole of the support plate through an adjusting lantern ring; the adjusting lantern ring is provided with an internal thread hole matched with the external thread of the front section of the anchorage bolt and an external thread matched with the internal thread hole of the support plate.
3. The anchor structure of a support with a large amount of adjustment of claim 2, wherein the thickness of the adjusting collar is greater than or equal to the thickness of the support plate.
4. The support anchorage structure with large height adjustment according to claim 2 or 3, wherein the front end face of the adjusting lantern ring is provided with a positioning clamping groove.
5. The support anchorage structure with the large height-adjusting amount as claimed in claim 2 or 3, further comprising a leveling lantern ring, wherein the leveling lantern ring is composed of two or more blocks which can be assembled, and is used for being additionally arranged on the external thread between the bolt head of the anchorage bolt and the adjusting lantern ring during height adjustment.
6. A method for heightening a support anchorage structure according to any one of claims 1 to 5, characterized by comprising the steps of:
firstly), jacking the building structure main body and the embedded plate to a specified height by adopting a jacking device, so that an anchorage steel bar positioned in the building structure main body and the embedded plate is separated from a rear section polished rod part of an anchorage bolt under the jacking action, and a separation layer is formed between the embedded plate and a support plate;
secondly), filling a height-adjusting steel plate into the void layer, or filling a fluid filler after the coaming is installed and filling the void layer after solidification;
and thirdly), releasing the jacking device to enable the building structure main body and the embedded plate to fall on the heightening cushion layer to finish the heightening operation.
7. The method for heightening a support anchorage structure as defined in claim 6, wherein when an adjusting collar is installed in the support anchorage structure, after the jacking operation in the first step) is completed, the adjusting collar is continuously screwed in the direction of heightening until the rear end surface of the adjusting collar is flush with the embedded plate, the adjusting collar is in threaded connection with the anchorage hole of the support plate, the anchorage bolt is screwed, and then the operation in the second step) is performed.
8. The method for heightening the support anchorage structure according to claim 7, wherein when the operation of the first step is completed and the front end surface of the adjusting lantern ring has a height difference with the surface of the support base plate, the fixing tool is used for clamping the positioning clamping groove on the adjusting lantern ring, the anchorage bolt is rotated reversely to enable the anchorage bolt to withdraw downwards for a certain distance, then the fixing tool is withdrawn, the leveling lantern ring is inserted into the internal thread hole where the support base plate and the bolt are separated, the internal thread hole is sleeved on the external thread of the anchorage bolt, finally the anchorage bolt is screwed again, and then the operation of the second step) is performed.
9. The heightening method of a support anchorage structure as defined in claim 7 or 8, wherein after the operation of step three) is completed, when the heightening is required again, the operations of steps one) to three) as defined in claim 6 are repeated once.
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| CN208072179U (en) * | 2018-01-29 | 2018-11-09 | 中铁二院工程集团有限责任公司 | Insulated leg is turned up in intelligence for Bridges on Urban Rail Transit |
| CN209084368U (en) * | 2018-11-08 | 2019-07-09 | 江苏西尔特橡胶股份有限公司 | A kind of rubber support with regulatory function |
| CN210117648U (en) * | 2019-04-01 | 2020-02-28 | 武汉市三江新桥技术有限公司 | Novel anchoring device and spherical support |
| WO2020235981A1 (en) * | 2019-05-17 | 2020-11-26 | Yoon Pil Yong | Bridge bearing for anti-seismic and seismic isolation reinforcement, and construction method for replacing bridge bearing |
| CN215629325U (en) * | 2021-08-05 | 2022-01-25 | 成都亚佳工程新技术开发有限公司 | Height-adjustable support |
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