CN103485279B - For the wet seam of cross-saddle single-track traffic - Google Patents
For the wet seam of cross-saddle single-track traffic Download PDFInfo
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- CN103485279B CN103485279B CN201310464308.7A CN201310464308A CN103485279B CN 103485279 B CN103485279 B CN 103485279B CN 201310464308 A CN201310464308 A CN 201310464308A CN 103485279 B CN103485279 B CN 103485279B
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Abstract
The invention discloses a kind of wet seam for cross-saddle single-track traffic.It is characterized in that adopting in sequence of construction and first build wet seam on time abutment pier and intermediate pier, then stretch-draw, anchoring second pre-stressed tendon, finally form Simply supported non-uniform, the firm structure of Simply supported non-uniform or freely-supported and become firm structure system; The wet seam utilizing the wet joint template of particular design to build can meet the linear requirement of constructing with high accuracy in circuit space; The device category comprised in wet joint concrete inside is many.For the wet seam of cross-saddle single-track traffic, not only rail beam contiguous prefabricated in, bridge pier and rail beam are linked, and the linear and high-precision requirement in circuit space can be met, the device category comprised in wet joint concrete inside is many, ensure that and reduce operation maintenance cost by the ride comfort that vehicle travels.
Description
Technical field
The present invention relates to a kind of wet seam, be applied to cross-saddle single-track traffic Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported and become firm structure system, specifically for adopting the cast-in-situ concrete in first prefabricated rear assembling construction between pre-track beam and between pre-track beam and bridge pier to wet a seam, be applied in all cross-saddle single-track traffics such as light-duty, medium-sized and heavy.
Background technology
For meeting the requirement of train ride comfort and passenger's comfortableness, the firm structure of cross-saddle single-track traffic Simply supported non-uniform, Simply supported non-uniform and freely-supported become firm structure system and have the linear of spatial complex and construction precision requires high.Thus the feature of the linear of spatial complex and high accuracy construction must also be had for the wet feature of seam of this system of cross-saddle single-track traffic.In addition, the wet seam between straddle-seat type single traffic rail beam has that three stressed, torsion load is large, cross sectional dimensions is little, lateral stiffness requires large feature, and it distinguishes larger with the wet seam used in highway, railway and Urban Bridge at present.Therefore, the wet seam between cross-saddle single-track traffic middle orbit beam is the obturator in high-precision spatial warping face and multiple space in shape; Wet seam inside comprises plain bars, prestressed reinforcement, and the end bay seam that wets further comprises joint plate, becomes firm structure system, further comprises the LFM signal device built-in fitting of pre-track beam in wet seam to the firm structure of Simply supported non-uniform and freely-supported.
Traditional Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported are become to the construction of firm structure system, especially the situation that bridge pier is shorter, in order to reduce pulling force suffered by abutment pier and concrete cracking, jack carries out the method construction of pushing tow often to need to adopt wet seam crossing on middle bridge pier to arrange.Therefore on bridge pier, the order of building of wet seam is first abutment pier and time abutment pier, finally builds wet joint concrete on middle pier.And the sequence of construction of wet seam between cross-saddle single-track traffic system middle orbit beam need be considered to need the situations such as the layout of second pre-stressed tendon to innovate traditional construction technology and improve.
Summary of the invention
Technical problem to be solved by this invention is: carry out innovative design to the wet seam that traditional Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported become in firm structure system, make it adapt to feature that cross-saddle single-track traffic Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported become firm structure system, reduces the object of operation and maintenance costs.
The technical solution adopted for the present invention to solve the technical problems is: in the described wet seam becoming firm structure system for cross-saddle single-track traffic Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported, sequence of construction adopts and first builds wet seam on intermediate pier and time abutment pier, then stretch-draw and the anchoring of longitudinal second pre-stressed tendon is carried out, last build wet seam on abutment pier again, formed continuously, continuous rigid frame or just structure system; Wet seam considers the linear feature of constructing with high accuracy in circuit space in shape; Wet joint concrete inside includes presstressed reinforcing steel, plain bars, and the end bay seam that wets further comprises joint plate, and become firm structure system to the firm structure of Simply supported non-uniform and freely-supported, wet seam further comprises the built-in fittings such as the LFM signal device of rail beam.
The technical solution adopted for the present invention to solve the technical problems is:
For the wet seam of cross-saddle single-track traffic, it is characterized in that adopting in sequence of construction and first build wet seam on time abutment pier and intermediate pier, then build wet seam on abutment pier, finally form Simply supported non-uniform, the firm structure of Simply supported non-uniform or freely-supported and become firm structure system; The wet seam utilizing the wet joint template of particular design to build can meet the linear requirement of constructing with high accuracy in circuit space; The device category comprised in wet joint concrete inside is many;
The described wet seam for cross-saddle single-track traffic, is characterized in that adopting in sequence of construction and first builds wet seam on intermediate pier and time abutment pier, then carry out the stretch-draw of longitudinal second pre-stressed tendon in pre-track beam body, anchoring and sealing off and covering anchorage; Finally form Simply supported non-uniform, the firm structure of Simply supported non-uniform or freely-supported and become firm structure system;
The described wet seam for cross-saddle single-track traffic, is characterized in that the wet joint template utilizing particular design, and wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing; In order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon;
The described wet seam for cross-saddle single-track traffic, it is characterized in that including presstressed reinforcing steel, plain bars at the equipment of wet joint concrete inside, in end bay wets seam, further comprises joint plate, become firm structure system at the firm structure of Simply supported non-uniform and freely-supported and wet and further comprises the LFM signal device built-in fitting of pre-track beam in seam.
The invention has the beneficial effects as follows: the wet seam becoming firm structure system for cross-saddle single-track traffic Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported, not only a N is linked across rail beam contiguous prefabricated in (N=2 ~ 10), bridge pier and pre-track beam, form Simply supported non-uniform, the firm structure of Simply supported non-uniform or freely-supported and become firm structure system; And the device category to comprise in wet joint concrete inside is many, the linear and high-precision feature in circuit space can be met, ensure that and reduce operation maintenance cost by the ride comfort that vehicle travels.
Through retrieval, become firm structure system at cross-saddle single-track traffic Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported and wet in seam research, do not have the open source literature report of wet seam described in this patent both at home and abroad.Inventor is from economical and practical angle, through long-term practice and research, independent proposition is used for the wet seam that cross-saddle single-track traffic Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported become firm structure system, the innovation that real genus one is large, to the great significance promoting cross-saddle single-track traffic.
Accompanying drawing explanation
Fig. 1 is lifted into pre-track beam on bridge pier and carries out space orientation by LFM signal device.
Fig. 2 builds freely-supported and becomes wet seam on firm structure and Simply supported non-uniform firm structure system intermediate pier, carries out stretch-draw and the anchoring of longitudinal second pre-stressed tendon in pre-track beam body.
Fig. 3 freely-supported becomes the wet seam schematic diagram on firm structure and Simply supported non-uniform firm structure system time abutment pier and intermediate pier.
Fig. 4 wets the horizontal tension rib schematic diagram of joint template.
The horizontal tension rib of Fig. 5 fixes schematic diagram to wet joint template.
Fig. 6 freely-supported becomes the wet seam schematic diagram on firm structure system abutment pier.
Fig. 7 builds freely-supported and becomes wet seam on firm structure system abutment pier, finally forms firm structure system.
On the firm structure of Fig. 8 Simply supported non-uniform and Simply supported non-uniform system abutment pier, schematic diagram arranged by freely movable bearing.
On Fig. 9 Simply supported non-uniform firm structure system abutment pier, freely movable bearing is arranged, finally forms continuous rigid frame system.
Figure 10 builds wet seam on Simply supported non-uniform system intermediate pier, carries out stretch-draw and the anchoring of longitudinal second pre-stressed tendon in pre-track beam body.
Wet seam schematic diagram on Figure 11 Simply supported non-uniform system intermediate pier.
In figure: pre-track beam 1, wet seam 2, bridge pier 3, joint plate 4, LFM signal device built-in fitting 5, wet joint template 6, horizontal tension rib 7, nut 8, pre-track beam builds the first phase presstressed reinforcing steel 9 during maintenance, and the firm structure of Simply supported non-uniform, Simply supported non-uniform and freely-supported become the second pre-stressed tendon 10 of elongated layout in firm structure system, the overhanging common longitudinal reinforcement 11 in pre-track beam both ends, shrinkage joint 12, freely movable bearing 13, temporary support 14.
Detailed description of the invention
The present invention will be further described by reference to the accompanying drawings:
Embodiment one becomes the wet seam of firm structure system for cross-saddle single-track traffic freely-supported
The wet seam of firm structure system is become for cross-saddle single-track traffic freely-supported, the construction method of firm structure after adopting first freely-supported, first the wet seam on intermediate pier and time abutment pier is built, longitudinal prestressing muscle and plain bars is not only comprised in wet seam, further comprises the LFM signal device built-in fitting for adjusting pre-track beam position, in end bay wets seam, further comprises joint plate.After wet joint concrete intensity reaches designing requirement, the longitudinal second pre-stressed tendon of stretch-draw anchor rail beam, finally builds the wet seam on abutment pier.Due to the high-precision requirement that guideway beam space is linear, wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing, simultaneously in order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon.
Step 1 is lifted into pre-track beam on bridge pier, carries out space orientation by LFM signal device
Carry out maintenance at workshop pre-track beam, reach transporting and hoisting after design age until it and, to bridge pier end face assigned address, carry out space orientation by LFM signal device, as shown in Figure 1.
Step 2 utilizes wet joint template, builds the wet seam on intermediate pier and time abutment pier
Build wet joint concrete on intermediate pier and time abutment pier, as shown in Figure 2.Wherein, intermediate pier and the wet seam signal on time abutment pier are as Fig. 3.Not only comprising longitudinal prestressing muscle and plain bars in wet seam, further comprises the LFM signal device built-in fitting for adjusting pre-track beam space position.In order to meet the linear exact requirements of wet joint spaces, adopt the template of particular design.Wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing; In order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon, as shown in Figure 4 and Figure 5.
The longitudinal second pre-stressed tendon of step 3 stretch-draw anchoring, builds the wet seam on abutment pier, forms freely-supported and becomes firm structure system
After the wet joint concrete intensity on intermediate pier and time abutment pier reaches designing requirement, stretch-draw the longitudinal second pre-stressed tendon of anchoring, then build abutment pier and to wet seam, the wet seam schematic diagram on abutment pier, as Fig. 6, forms freely-supported and becomes firm structure system, as shown in Figure 7.
Embodiment two is for the wet seam of cross-saddle single-track traffic Simply supported non-uniform firm structure system
For the wet seam of cross-saddle single-track traffic Simply supported non-uniform firm structure system, adopt the construction method of the firm structure of simple-supported thencontinuous, first the wet seam on intermediate pier and time abutment pier is built, not only comprising longitudinal prestressing muscle and plain bars in wet seam, further comprises the LFM signal device built-in fitting for adjusting pre-track beam space position.After wet joint concrete intensity reaches designing requirement, the longitudinal second pre-stressed tendon of stretch-draw anchor rail beam, finally carries out sealing off and covering anchorage to second pre-stressed tendon on abutment pier.Due to the high-precision requirement that guideway beam space is linear, wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing, simultaneously in order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon.
Step 1 is lifted into pre-track beam on bridge pier, carries out space orientation by LFM signal device
Carry out maintenance at workshop pre-track beam, reach transporting and hoisting after design age until it and, to bridge pier end face assigned address, carry out space orientation by LFM signal device, as shown in Figure 1.
Step 2 utilizes wet joint template, builds the wet seam on intermediate pier and time abutment pier
Build intermediate pier and time abutment pier to wet joint concrete, the wet seam signal on intermediate pier is as Fig. 3.Not only comprising longitudinal prestressing muscle and plain bars in wet seam, further comprises the LFM signal device built-in fitting for adjusting pre-track beam space position.In order to meet the linear exact requirements of wet joint spaces, adopt the template of particular design.Wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing; In order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon, as shown in Figure 4 and Figure 5.
The longitudinal second pre-stressed tendon of step 3 stretch-draw anchoring, carries out sealing off and covering anchorage to second pre-stressed tendon on abutment pier, forms the firm structure system of Simply supported non-uniform
After the wet joint concrete intensity on intermediate pier and time abutment pier reaches designing requirement, the longitudinal second pre-stressed tendon of stretch-draw anchoring, carry out sealing off and covering anchorage to second pre-stressed tendon on abutment pier, the freely movable bearing on abutment pier is arranged as Fig. 8, finally form the firm structure system of Simply supported non-uniform, as shown in Figure 9.
Embodiment three is for the wet seam of cross-saddle single-track traffic Simply supported non-uniform system
For the wet seam of cross-saddle single-track traffic Simply supported non-uniform system, adopt the construction method of simple-supported thencontinuous, first build the wet seam on intermediate pier and time abutment pier, in wet seam, contain longitudinal prestressing muscle, plain bars.After wet joint concrete intensity reaches designing requirement, the longitudinal second pre-stressed tendon of stretch-draw anchor rail beam, finally carries out sealing off and covering anchorage to second pre-stressed tendon on abutment pier.Due to the high-precision requirement that guideway beam space is linear, wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing, simultaneously in order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon.
Step 1 is lifted into pre-track beam on bridge pier, carries out space orientation by temporary support
Carry out maintenance at workshop pre-track beam, reach transporting and hoisting after design age until it and, to bridge pier end face assigned address, carry out space orientation by temporary support.
Step 2 utilizes wet joint template, builds the wet seam on intermediate pier and time abutment pier, and installs freely movable bearing
Build intermediate pier and time abutment pier to wet joint concrete, freely movable bearing is installed, as shown in Figure 10.Wherein, the wet seam signal on intermediate pier is as Figure 11.Wet seam comprises longitudinal prestressing muscle, plain bars.In order to meet the linear exact requirements of wet joint spaces, adopt the template of particular design.Wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing; In order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon, as shown in Figure 4 and Figure 5.
The longitudinal second pre-stressed tendon of step 3 stretch-draw anchoring, carries out sealing off and covering anchorage to second pre-stressed tendon on abutment pier, forms Simply supported non-uniform system
After the wet joint concrete intensity on intermediate pier and time abutment pier reaches designing requirement, the longitudinal second pre-stressed tendon of stretch-draw anchoring, carry out sealing off and covering anchorage to second pre-stressed tendon on abutment pier, the freely movable bearing on abutment pier is as Fig. 8, finally form Simply supported non-uniform system, as shown in Figure 10.
Above-described specific embodiment, is illustrated the object of patent of the present invention, technical scheme and beneficial effect.It is emphasized that the foregoing is only the specific embodiment of patent of the present invention, can not be used for limiting the scope of the invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
In sum, the invention provides a kind of wet seam becoming firm structure system for cross-saddle single-track traffic Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported, utilize the technology of this invention, sequence of construction adopts and first builds wet seam on time abutment pier and intermediate pier, build wet seam on abutment pier again, finally form Simply supported non-uniform, the firm structure of Simply supported non-uniform and freely-supported and become firm structure system; The wet seam utilizing the wet joint template of particular design to build can meet the linear requirement of constructing with high accuracy in circuit space; The device category comprised in wet joint concrete inside is many.Finally define the wet seam being applicable to cross-saddle single-track traffic field.The present invention has novelty, practicality, meets each requirement of invention, therefore proposes patent application in accordance with the law.
Claims (3)
1., for a wet seam for cross-saddle single-track traffic, it is characterized in that:
Sequence of construction adopts and first builds wet seam on time abutment pier and intermediate pier, then build wet seam on abutment pier, finally form Simply supported non-uniform, the firm structure of Simply supported non-uniform or freely-supported and become firm structure system; Wet joint template should meet the requirement of guideway beam horizontal curve and vertical curve when designing; In order to increase the rigidity of wet joint template, horizontal tension rib is adopted to carry out drawknot to wet joint template, to prevent from wet joint template from occurring rising mould phenomenon; The wet seam utilizing the wet joint template of this particular design to build can meet the linear requirement of constructing with high accuracy in circuit space; The device category comprised in wet joint concrete inside is many.
2. a kind of wet seam for cross-saddle single-track traffic according to claim 1, is characterized in that:
Sequence of construction adopts and first builds wet seam on intermediate pier and time abutment pier, then carry out the stretch-draw of longitudinal second pre-stressed tendon in pre-track beam body, anchoring and sealing off and covering anchorage; Finally form Simply supported non-uniform, the firm structure of Simply supported non-uniform or freely-supported and become firm structure system.
3. a kind of wet seam for cross-saddle single-track traffic according to claim 1, is characterized in that:
Include presstressed reinforcing steel, plain bars at the equipment of wet joint concrete inside, in end bay wets seam, further comprises joint plate, become firm structure system at the firm structure of Simply supported non-uniform and freely-supported and wet and further comprises the LFM signal device built-in fitting of pre-track beam in seam.
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