CN114575253A - Arch rib mounting system - Google Patents
Arch rib mounting system Download PDFInfo
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- CN114575253A CN114575253A CN202111671058.5A CN202111671058A CN114575253A CN 114575253 A CN114575253 A CN 114575253A CN 202111671058 A CN202111671058 A CN 202111671058A CN 114575253 A CN114575253 A CN 114575253A
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- arch rib
- rib
- support
- arch
- base
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- 238000010276 construction Methods 0.000 abstract description 18
- 238000004904 shortening Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 9
- 210000001503 joint Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D4/00—Arch-type bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The application relates to the technical field of construction of strength type skeleton of concrete arch bridge, and the arch rib installing the system that this application provided includes: the device comprises an arch rib supporting structure and an arch rib angle adjusting structure, wherein the arch rib angle adjusting structure is arranged on the arch rib supporting structure; wherein the arch rib support structure comprises: the concrete base, the base adjusting support and the base support are fixed on the ground; the base adjusting support is obliquely arranged on the concrete base, and the base support is fixedly supported on the concrete base for the base adjusting support; the arch rib angle adjustment structure comprises: the arch rib adjusting support and the mounting bracket are vertically fixed on the ground; the arch rib adjusting supports support the base adjusting supports, and the arch rib adjusting supports support the base adjusting supports to form a bearing space for accommodating arch rib sections. The scheme that this application provided helps shortening the construction time, reduces the safe risk of construction.
Description
Technical Field
The application relates to the technical field of construction of a strength type framework of a concrete arch bridge, in particular to an arch rib installation system.
Background
The concrete-encased reinforcing steel bars of the arch rib are important bearing structures of the concrete-filled steel tube arch bridge, and the currently common concrete-encased reinforcing steel bar construction method generally comprises the following steps: firstly, assembling a hanger system by taking closed arch ribs as bearing supports, and then building a construction support and an operation platform by utilizing the hanger system; secondly, hoisting the steel bar parts to a construction operation platform, wherein the steel bar parts are limited by the bearing limit load of the platform and need to be hoisted to the operation platform for a few times; thirdly, constructing a first ring arch rib and wrapping concrete reinforcing steel bars outside, binding lower-layer longitudinal bearing main reinforcing steel bars of the bottom plate on a bottom operating platform by an operator, assembling positioning reinforcing steel bars, assembling upper-side longitudinal main reinforcing steel bars of the bottom plate, assembling annular structural reinforcing steel bars to complete assembling of reinforcing steel bars of the bottom plate, and respectively constructing reinforcing steel bars of a web plate and a top plate according to the construction steps; fourthly, according to the design construction process, the externally-coated concrete arch rib steel bars are symmetrically constructed in a ring-dividing manner from the arch springing to the arch crown in sequence.
However, because the quantity of the steel bars in the outer-coated concrete is large, the design requirement of the outer-coated concrete is that the construction is sequentially circulated from the arch foot to the midspan or the ring jump construction, the outer-coated concrete steel bars are assembled on the high-altitude platform by one piece, the steel bars need to be hoisted and stored on the construction platform firstly, and then are assembled on the arch ribs manually. The assembling process can be limited by the limited operation space of the aerial work platform, the assembling difficulty of the reinforcing steel bars is increased, the reinforcing steel bar assembling auxiliary equipment is difficult to use in the high altitude, and only the original manual assembling can be used. Because the steel bar splicing time of the method occupies half of the construction time of the whole ring of the concrete wrapped outside, the working efficiency of manual work at high altitude is low and the safety risk is high.
Disclosure of Invention
In order to solve the technical problems that when a concrete-filled steel tube arch bridge is built, the efficiency of a constructor working aloft is low and the safety risk is large, the application provides an arch rib mounting system.
The present application provides a rib mounting system comprising:
the device comprises an arch rib supporting structure and an arch rib angle adjusting structure, wherein the arch rib angle adjusting structure is arranged on the arch rib supporting structure;
wherein the arch rib support structure comprises: the concrete base, the base adjusting support and the base support are fixed on the ground; the base adjusting support is obliquely arranged on the concrete base, and the base support is fixedly supported on the concrete base relative to the base adjusting support;
the arch rib angle adjustment structure comprises: the arch rib adjusting support and the mounting bracket are vertically fixed on the ground;
the arch rib adjusting supports support the base adjusting supports, and the arch rib adjusting supports support the base adjusting supports to form a bearing space for accommodating arch rib sections.
In an alternative embodiment, the arch rib mounting system further comprises a counter-pulling device;
the counter-pulling device is arranged at the bottom of the arch rib adjusting support and is used for fixing the arch rib segment at the position of the arch rib segment in the bearing space.
In an alternative embodiment, the arch rib mounting system further comprises a jacking device;
the jacking device is arranged on a supporting surface of the arch rib supporting structure or the arch rib angle adjusting structure to the arch rib segment and supports the arch rib segment in the bearing space in an abutting mode.
In an optional embodiment, the jacking device comprises a plurality of first jacking devices;
the first jacking devices are vertically arranged at two ends of the supporting surface of the arch rib adjusting support;
the jacking height of each first jacking device to the arch rib segment is adjustable.
In an optional embodiment, the jacking device comprises a plurality of first jacking devices;
the first jacking devices are vertically arranged at two ends of the supporting surface of the arch rib adjusting support;
the jacking height of each first jacking device to the arch rib segment is adjustable.
In an optional embodiment, the jacking device comprises a plurality of second jacking devices;
the second jacking devices are vertically arranged at two ends of the supporting surface of the base adjusting support;
and the lifting height of each second lifting device to the arch rib segment is adjustable.
In an alternative embodiment, the supporting surface of the base adjustment support is smaller than the supporting surface of the rib adjustment support;
the adjusting mode of the jacking height of the arch rib section by the second jacking device is fine adjustment.
In an alternative embodiment, the rib mounting system further comprises a hanger;
the hanger is located above the holding space and is used for lifting the arch rib segment and moving the arch rib segment to or away from the holding space or other arch rib segments connected with the arch rib segment.
In an alternative embodiment, the angle of the support volume is in the range of 70-110 degrees.
In an alternative embodiment, the length of the rib adjustment support is 1.5-2.0 times the length of each rib segment.
The application provides an arch rib installing the system, its beneficial effect does:
the arch rib installing system that provides in this application can utilize arch rib adjustment support the bearing space that holds the arch rib festival section that the support formed is adjusted to the base, according to the actual installation angle of current arch rib festival section, adjusts in the position outside the hunch seat to reduce the construction degree of difficulty of follow-up arch rib festival section at the high altitude of reality concatenation and shorten the time of high altitude construction, help promoting the operating efficiency and reduce the safe risk that the arch rib was assembled.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice.
Drawings
The foregoing and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a rib mounting system provided in accordance with an embodiment of the present application;
fig. 2 is a state view of a third rib segment in an embodiment provided herein, being connected to a rib foundation section formed by a first rib segment and a second rib segment;
fig. 3 is a structural schematic view of a cross-sectional area of a rib segment provided in an embodiment of the present application.
Detailed Description
The present application is further described with reference to the following drawings and exemplary embodiments, wherein like reference numerals are used to refer to like elements throughout. In addition, if a detailed description of the known art is not necessary to show the features of the present application, it is omitted.
In the reinforcing steel bar assembling link of arch rib construction, the procedures of butt joint positioning and installation need to be finished in high altitude by construction personnel more than half of the time, and besides causing safety risks, the construction efficiency cannot be improved.
In view of the above, the present application provides a rib mounting system.
Referring to fig. 1, fig. 1 is a schematic structural view of a rib mounting system according to an embodiment of the present application.
The rib mounting system 100 provided by the embodiment of the present application includes: a rib support structure 10 and a rib angle adjustment structure 20, the rib angle adjustment structure 20 being disposed on the rib support structure 10;
wherein the arch rib support structure 10 comprises: a concrete base 11 fixed on the ground, a base adjusting support 12 and a base support 13; the base adjusting support 12 is obliquely arranged on the concrete base 11, and the base support 13 is fixedly supported on the concrete base 11 for the base adjusting support 12;
the rib angle adjustment structure 20 includes: an arch rib adjusting support 21 and a mounting bracket 22 vertically fixed on the ground;
the rib adjustment supports 21 support the base adjustment supports 12 and the rib adjustment supports 21 support the base adjustment supports 12 with a seating space 30 therebetween for receiving a rib segment. And the length of the arch rib adjusting support 21 is 1.5-2.0 times of the length of each arch rib segment, so that the arch rib segments supported on the arch rib adjusting support 21 can be completely supported and accommodated in the supporting and accommodating range of the arch rib adjusting support 21, and the stability of the installation operation of the arch rib is ensured.
In order to clearly describe the structure and operation principle of the arch rib segment of the arch rib installation system, reference is made to fig. 2, and fig. 2 is a state diagram of the third arch rib segment in the embodiment provided in the present application, which is connected to the arch rib foundation segment formed by the first arch rib segment and the second arch rib segment. The operation of supporting and splicing the individual rib segments is described in detail using the rib installation system 100 of fig. 2 as an example.
Referring to the sequence of the arrangement of the respective rib segments in fig. 2, a first rib segment 201, a second rib segment 202 and a third rib segment 203 are defined, wherein the first rib segment 201 is supported in the holding space 30 by the rib support structure 10 and the rib angle adjustment structure 20.
The first rib segment 201, the second rib segment 202 and the third rib segment 203 are prefabricated prior to the configuration of the rib installation system 100.
Based on the arch rib installation system, assembling the first arch rib segment 201 and the second arch rib segment 202 to form an arch rib base section 210;
a third rib segment 203 is connected to the second rib segment 202 to form a cantilever rib structure;
splitting the first rib segment 201 and the second rib segment 202, and after removing the first rib segment 201, using the second rib segment 202 and the third rib segment 203 as a rib base segment of the next round;
and sequentially installing the rest arch rib segments according to the splicing process of the third arch rib segment 203, and sequentially moving out the pre-assembled arch rib segments according to the splitting process of the first arch rib segment 201 until the arch rib is folded.
Based on the supporting space 30 provided in the above embodiment, the arch rib segments can be placed in an inclined position in the arch rib angle adjusting structure 20, so as to simulate the arc-like structure formed by the arch rib segments during actual installation.
In this embodiment, the base adjustment support 12 faces a side of the rib angle adjustment structure 20 for supporting a bottom portion of the first rib segment 201 to prevent the first rib segment 201 from moving in an inclined direction. While the other side of the footing adjustment support 12 is supported by the footing support 13 so that it is fixed obliquely to the concrete footing 11, forming an oblique support surface for the first arch rib segment 201. As shown in fig. 1, in the present embodiment, the base support 13 includes a plurality of support rods 131, each inclined toward one side of the base adjustment support 12. The specific length of each support rod 131 and the angle of the support surface at both ends thereof are determined by the distance and included angle between the concrete base 11 and the base adjusting support 12. Each support rod 131 is in proportion to the distance from the rib-adjusting support 21, and the support rods 131 are arranged at equal intervals along the direction in which the base-adjusting support 12 extends.
The mounting bracket 22 is fixed to a side of the pedestal adjusting bracket 12 corresponding to the inclined surface. The mounting bracket 22 includes a plurality of brackets 221. The supports 221 are supported below the rib adjusting supports 21, the angle of the supporting surface formed is related to the supporting design angle of the rib adjusting supports 21, and the specific length is determined by the vertical distance between the supporting surface of the concrete foundation 11 corresponding to each support 221 and the lower surface of the foundation adjusting support 12.
The length of the supports 221 is proportional to the distance from the base adjustment support 12, and the supports 221 are arranged equidistantly along the direction in which the rib adjustment support 21 extends.
Based on the structure of the arch rib installation system 100 formed by the arch rib supporting structure 10 and the arch rib angle adjusting structure 20, specifically, the end of the arch rib adjusting support 21 inclined to the base adjusting support 12 is supported on the upper side surface of the base adjusting support 12, so that the base adjusting support 12 and the arch rib adjusting support 21 inclined relatively form an included angle bearing space 30 similar to that formed by a pair of adjacent long sides and wide sides of an arch rib segment, so that the first arch rib segment 201 is stably supported in the included angle bearing space 30, and a stable operation space is provided for the assembly, angle adjustment and detachment of a plurality of subsequent arch rib segments.
In the present embodiment, a plurality of parallel links and diagonal braces are provided between each mounting bracket 22, and each adjacent two brackets 221 in the mounting brackets 22 are reinforced, so as to ensure the supporting function of the mounting brackets 22 on the rib adjusting support 21.
The outer concrete-coated reinforcing steel bars 250 of the first and second arch rib segments 202 are assembled by using the arch rib of the first and second arch rib segments 201 and 202 as a framework.
In the rib mounting system 100, the angle between the bearing space 30 formed by the structure 20 and the rib support structure 10 is adjusted according to the rib angle. The included angle of the bearing space is in the range of 70-110 degrees. The angle range of this contained angle is according to the angle range setting of the contained angle of the adjacent long limit of arch rib segment and minor face, and like this, the long limit of first arch rib segment 201 is roughly parallel with arch rib adjustment support 21, and the minor face of first arch rib segment 201 is roughly parallel with base regulation support 12 to guarantee that first arch rib segment 201 can stable support in the spatial dimension of bearing space 30, thereby ensure the stability of arch rib installation.
After the first arch rib segment 201 is stably supported in the supporting space 30, the arch ribs in the first arch rib segment 201 and the second arch rib segment 202 are used as frameworks, and the alignment operation of the second arch rib segment 202 and the first arch rib segment 201 is completed.
Referring to fig. 3, fig. 3 is a structural schematic view of a cross-sectional area of a rib segment provided by an embodiment of the present application. Each circular diameter rib 220 in the cross-sectional area of the rib segment 200 in this embodiment. The first arch rib section 201 and the second arch rib section 202 are aligned with each other in cross section, after the alignment operation is completed, the concrete-encased steel bars 250 which are enclosed in the relative positions of the first arch rib section 201 and the second arch rib section 202 are spliced, and the first arch rib section 201 and the second arch rib section 202 are spliced into one arch rib section, so that the arch rib foundation section 210 is obtained.
The bottom of the arch rib adjusting support 21 is provided with a counter-pulling device 23;
with reference to fig. 2, the first segment 201 is placed in the holding space 30 and the counter-pulling device 23 is used to fix the position of the first segment 201 in the holding space 30.
In this embodiment, the counter-pulling device 23 is disposed at one end of the base adjusting support 12 close to the base adjusting support 12, and fixes the position of one end of the first arch rib segment 201 close to the base adjusting support 12, and by increasing the distance between the action point of the counter-pulling device 23 on the first arch rib segment 201 and the action point of the other end of the first arch rib segment 201 supported on the arch rib adjusting support 21, the traction force of the arch rib adjusting support 21 on the first arch rib segment 201 is increased, so as to prevent the first arch rib segment 201 from easily separating from the supporting surface of the arch rib adjusting support 21 due to insufficient traction force after the second arch rib segment 202 and/or the third arch rib segment 203 are connected; in addition, because the set point of the counter-pulling device 23 is close to the arch rib adjusting support 21, the stress condition of the actually installed arch rib can be simulated, and the effect of other actually installed arch rib segments on the current first arch rib segment 201 is beneficial to improving the stress of the arch rib segments and the accuracy of angle adjustment.
Based on the arrangement of the counter pulling device 23, the first arch rib segment 201 is placed in the supporting space 30 formed by the above-mentioned embodiment, and one end of the first arch rib segment 201 close to the base adjusting support 12 is fixed on the arch rib adjusting support 21, so as to prevent the first arch rib segment 201 from displacement.
Thanks to the arrangement of the counter-pulling device 23, after the first rib segment 201 and the second rib segment 202 are assembled to form the rib foundation section 210, the angle of the rib foundation section 210 is adjusted by using the jacking device according to the installation angle of the current rib segment at the bridge body, so that the angle of the rib foundation section 210 matches the installation angle.
In this embodiment, the jacking device may be used to jack the angle of each point of application of the rib segments on the rib 220 installation system 100, either directly or indirectly, so that the angle of the rib base section 210 can be matched to the angle of installation of the rib at the bridge. Wherein, the jacking device can be a jack.
The jacking devices comprise a plurality of first jacking devices 24;
the first jacking devices 24 are vertically arranged at two ends of the supporting surface of the arch rib adjusting support 21;
adjusting the jacking height of the first jacking device 24 according to the current installation elevation angle of the arch rib segment on the bridge body, so that the elevation angle of the arch rib foundation section 210 supported on the first jacking device 24 at two ends is consistent with the current installation elevation angle of the arch rib segment on the bridge body.
Referring to fig. 1, first jacking devices 24 are vertically provided at both ends of the supporting surface of fig. 1 along the rib adjusting support 21. In the process of lifting up and down perpendicular to the supporting surface of the rib adjustment support 21, the first lifting device 24 changes the lifting height of the corresponding side of the first rib segment 201 through the first rib segment 201 supported thereon and the corresponding force point thereof, and adjusts the height difference between the force point and other force points of the first rib segment 201, thereby realizing the inclination angle of the whole rib foundation section 210 formed by the first rib segment 201 and the second rib segment 202 in the direction perpendicular to the supporting surface of the rib adjustment support. In this embodiment, at least one first jacking device 24 is installed at each corner of the supporting surface of the rib adjustment support 21, so that the elevation angle of the first rib segment 201 can be adjusted in a direction perpendicular to the supporting surface of the rib adjustment support 21, so that the elevation angle of the entire rib foundation section 210 matches the current installation elevation angle of the rib segment at the bridge body.
The jacking devices comprise a plurality of second jacking devices 14;
the second jacking devices 14 are vertically arranged at two ends of the supporting surface of the base adjusting support 12;
and the elevation angle of the arch rib foundation section 210 is precisely finely adjusted by utilizing the jacking height of the second jacking device 14.
Referring to fig. 1, second lifting means 14 are vertically provided at both ends of the supporting surface of the pedestal adjusting support 12 of fig. 1. In the process of jacking up and down perpendicular to the supporting surface of the base adjusting support 12, the second jacking device 14 changes the jacking height of the corresponding side of the first arch rib segment 201 through the first arch rib segment 201 supported thereon and the corresponding force point thereof, and adjusts the height difference between the force point and other force points of the first arch rib segment 201, thereby realizing the inclination angle of the whole arch rib foundation section 210 formed by the first arch rib segment 201 and the second arch rib segment 202 in the direction perpendicular to the supporting surface of the base adjusting support 12. In this embodiment, at least one second jacking device 14 is installed at each corner of the supporting surface of the base adjusting support 12, so that the elevation angle of the first arch rib segment 201 can be adjusted in the direction perpendicular to the supporting surface of the base adjusting support 12, and the elevation angle of the whole arch rib foundation section 210 can be further accurately adjusted. Since the supporting surfaces of the first arch rib segment 201 and the base adjusting support 12 are smaller than the supporting surfaces of the first arch rib segment 201 and the arch rib adjusting support 21, the angle adjustment range of the second jacking device 14 on the arch rib base section 210 is smaller, and therefore, the second jacking device 14 can be used for realizing the fine adjustment function on the arch rib base section 210.
Referring to fig. 3, the third arch rib section 203 is provided with an external stiffening skeleton 240, and the external stiffening skeleton 240 is matched with the position of an external concrete reinforcing steel bar 250 between the arch ribs of the third arch rib section 203;
and based on the position of the steel bar laid out outside the external stiffening framework 240 of the second arch rib section 202, butting the external concrete steel bar 250 of the third arch rib section 203 with the external concrete steel bar 250 of the second arch rib section 202.
Referring to fig. 3, it can be seen that each rib segment 200 includes a plurality of parallel ribs 220, the plurality of parallel ribs 220 are enclosed in a square, and transverse and longitudinal internal stiffening skeletons 230 are disposed between each rib 220 to connect all the ribs 220 to form a rib segment.
In this embodiment, an external stiffening rib 240 is attached to the inner and outer sides of the box surrounded by all the ribs 220 of the third rib segment 203 and the internal stiffening ribs 230 connected to the adjacent two ribs 220, and the external stiffening rib 240 is attached to the external stiffening rib. As shown in fig. 3, the cross-section of the third rib segment 203 with the external stiffening skeleton 240 is similar to the chinese character "day", wherein the ribs 220 and the internal stiffening skeleton 230 are located within a box.
Continuing with the above embodiment, concrete-encased reinforcing bars 250 are provided inside and outside the box of the character "day" formed by the third rib segment 203 for subsequent alignment with other rib segments. And the external stiffening framework 240 installed on the third arch rib segment 203 is matched with the position of the external concrete reinforcing steel bar 250, so that the external concrete reinforcing steel bar 250 can be distributed outside the square frame formed by the external stiffening framework 240.
Similarly, the second rib segments 202, which are continuous with the third rib segment 203, each have substantially the same cross-section, and the concrete-encased reinforcing bars 250 are also enclosed on the inside and outside of the box formed by the corresponding rib segments.
In this embodiment, the rebar locations have been set out at the end of second rib segment 202 as rib foundation section 210 is being constructed. Based on this configuration, when the third rib segment 203 is being spliced to the second rib segment 202, the external stiffening skeletons 240 of the third rib segment 203 are matched to the positions of the concrete-encased reinforcing bars 250 of the second rib segment 202.
In addition, since the position of the reinforcing bars is set out outside the external stiffened frame 240 of the second arch rib section 202, when the third arch rib section 203 is connected to the second arch rib section 202, it is necessary to connect the external stiffened frame 240 of the third arch rib section 203 and the concrete-coated reinforcing bars 250 of the second arch rib section 202 in a butt joint manner, in addition to matching the positions of the external stiffened frame 240 of the third arch rib section 203 and the concrete-coated reinforcing bars 250 of the second arch rib section 202. The butt joint involves welding the two abutting lengths of concrete-encased reinforcing bar 250 to reinforce the relative positional relationship between the third rib segment 203 and the second rib segment 202.
Referring to fig. 2, the rib mounting system 100 further includes a hanger 40. The spreader 40 is located above the holding space 300 and is used to lift and move the rib segment to and from the holding space or other rib segments to which it is connected.
Before the third rib segment 203 is spliced, the third rib segment 203 is lifted by the crane 40 at an elevation angle at which the rib foundation section 210 is installed on the third rib segment 203, and is transferred to the spliced end of the second rib segment 202, and the third rib segment 203 is spliced to the second rib segment 202.
In the present embodiment, the installation elevation angle of the third rib segment 203 is pre-adjusted by the spreader 40, and the third rib segment 203 is slowly moved to the continuous end of the second rib segment 202 while the installation elevation angle obtained by the pre-adjustment is kept constant, so as to perform the preliminary alignment with the ribs of the third rib segment 203. After the initial alignment is completed, the external stiffening skeletons 240 may be installed on the third arch rib segment 203, and besides the positions of the external stiffening skeletons 240 of the third arch rib segment 203 and the concrete-coated reinforcing bars 250 of the second arch rib segment 202 are matched, the external concrete-coated reinforcing bars 250 of the third arch rib segment 203 and the second arch rib segment 202 need to be butted.
In the above embodiment, before the first rib segment 201, the second rib segment 202, and the third rib segment 203 are moved to the rib installation system 100, the corresponding rib segments may be lifted by the lifting frame according to the installation elevation angles of the corresponding rib segments, so as to reduce the time consumption of the corresponding rib segments due to angle adjustment during the process of being placed in the rib installation system 100 or during the process of being connected, and avoid the loss of the corresponding rib segments due to collision with other nearby equipment, buildings, or people caused by angle adjustment.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A rib mounting system, comprising:
the device comprises an arch rib supporting structure and an arch rib angle adjusting structure, wherein the arch rib angle adjusting structure is arranged on the arch rib supporting structure;
wherein the arch rib support structure comprises: the concrete base, the base adjusting support and the base support are fixed on the ground; the base adjusting support is obliquely arranged on the concrete base, and the base support is fixedly supported on the concrete base for the base adjusting support;
the arch rib angle adjustment structure comprises: the arch rib adjusting support and the mounting bracket are vertically fixed on the ground;
the arch rib adjusting supports support the base adjusting supports, and the arch rib adjusting supports support the base adjusting supports to form a bearing space for accommodating arch rib sections.
2. A rib mounting system as claimed in claim 1, further comprising counter-pulling means;
the counter-pulling device is arranged at the bottom of the arch rib adjusting support and is used for fixing the arch rib segment at the position of the arch rib segment in the bearing space.
3. A rib mounting system as claimed in claim 1, further comprising jacking means;
the jacking device is arranged on a supporting surface of the arch rib supporting structure or the arch rib angle adjusting structure to the arch rib segment and supports the arch rib segment in the bearing space in an abutting mode.
4. A rib mounting system as claimed in claim 3,
the jacking device comprises a plurality of first jacking devices;
the first jacking devices are vertically arranged at two ends of the supporting surface of the arch rib adjusting support;
the jacking height of each first jacking device to the arch rib segment is adjustable.
5. A rib mounting system as claimed in claim 3,
the jacking device comprises a plurality of first jacking devices;
the first jacking devices are vertically arranged at two ends of the supporting surface of the arch rib adjusting support;
the jacking height of each first jacking device to the arch rib segment is adjustable.
6. A rib mounting system as claimed in claim 5,
the jacking device comprises a plurality of second jacking devices;
the second jacking devices are vertically arranged at two ends of the supporting surface of the base adjusting support;
and the lifting height of each second lifting device to the arch rib segment is adjustable.
7. A rib mounting system as claimed in claim 6,
the supporting surface of the base adjusting support is smaller than that of the arch rib adjusting support;
the adjusting mode of the jacking height of the arch rib section by the second jacking device is fine adjustment.
8. A rib mounting system as claimed in claim 1, further comprising a hanger;
the hanger is located above the holding space and is used for lifting the arch rib segment and moving the arch rib segment to or away from the holding space or other arch rib segments connected with the arch rib segment.
9. A rib mounting system as claimed in claim 1,
the included angle of the bearing space is in the range of 70-110 degrees.
10. A rib mounting system as claimed in claim 1,
the length of the arch rib adjusting support is 1.5-2.0 times of the length of each arch rib section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111671058.5A CN114575253B (en) | 2021-12-31 | 2021-12-31 | Arch rib mounting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111671058.5A CN114575253B (en) | 2021-12-31 | 2021-12-31 | Arch rib mounting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114575253A true CN114575253A (en) | 2022-06-03 |
| CN114575253B CN114575253B (en) | 2024-01-26 |
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| JP2007205139A (en) * | 2006-02-06 | 2007-08-16 | Sumitomo Mitsui Construction Co Ltd | Construction method of arch bridge |
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