CN102182251A - Bottom chord node fastening device of multi-suspend structure and fastening tension method thereof - Google Patents

Bottom chord node fastening device of multi-suspend structure and fastening tension method thereof Download PDF

Info

Publication number
CN102182251A
CN102182251A CN 201110087424 CN201110087424A CN102182251A CN 102182251 A CN102182251 A CN 102182251A CN 201110087424 CN201110087424 CN 201110087424 CN 201110087424 A CN201110087424 A CN 201110087424A CN 102182251 A CN102182251 A CN 102182251A
Authority
CN
China
Prior art keywords
cableway
groove
draw
stretch
holder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN 201110087424
Other languages
Chinese (zh)
Other versions
CN102182251B (en
Inventor
周观根
王永梅
何挺
沈小达
洪王东
陈志祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Southeast Space Frame Co Ltd
Original Assignee
Zhejiang Southeast Space Frame Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Southeast Space Frame Co Ltd filed Critical Zhejiang Southeast Space Frame Co Ltd
Priority to CN 201110087424 priority Critical patent/CN102182251B/en
Publication of CN102182251A publication Critical patent/CN102182251A/en
Application granted granted Critical
Publication of CN102182251B publication Critical patent/CN102182251B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Reinforcement Elements For Buildings (AREA)

Abstract

The invention relates to a node fastening device, in particular to a bottom chord node fastening device of a multi-suspend structure for a building steel structure and a fastening tension method thereof. The upper end of a support rod connecting piece is a support rod transition step; a groove with downward opening is arranged in the middle of the support rod connecting piece; a cableway fixing seat is matched with and firmly fixed to the support rod connecting piece; a cable passing vertical rod is arranged in the middle of the cableway fixing seat; the upper end of the cable passing vertical rod is a downward-concave groove; the cable passing vertical rod is matched with the groove; the groove and the downward-concave groove form a cable passing pore path; and the dragging of primary and secondary cables is realized in the way of fastening and then fastening prestressing cables. The bottom chord node fastening device of multi-suspend structure and the fastening tension method thereof are reasonable in structure, high in construction precision and construction efficiency and low in construction cost, and enhance the safety of steel structure.

Description

Multiple string props up the lower-chord panel point fastener and the fastening method for stretching thereof of structure
Technical field
Patent of the present invention relates to a kind of node fastener, relates in particular to lower-chord panel point fastener and fastening method for stretching thereof that a kind of multiple string that is used for construction steel structure props up structure.
Background technology
It is a kind of novel hybridization prestressed large-span space structures system that the single-layer lattice shell and the flexible cable-strut system of rigidity are combined that existing string props up latticed shell structure, adapts to space structures large span, light-duty, stressed reasonable, succinct development trend.It has improved the resistance to overturning of top single-layer lattice shell structure on the one hand, makes structure can cross over bigger space; On the other hand, string props up latticed shell structure and has certain initial stiffness, and its design, construction forming and joint structure are compared with full flexible structures such as rope domes and obtained bigger simplification.In addition, two kinds of structural systems are cancelled out each other to the effect of bearing, make structure become self equilibrium systems, when giving full play to single-layer lattice shell structure stress advantage, can make full use of the high-strength pull resistance of rope material, the distribution of internal force of adjustment system reduces the internal force amplitude, thereby improves structure bearing capacity.And multiple string props up structure is that a kind of novel string props up the latticed shell structure form, its cable-strut system divides the primary and secondary rope, and arrange at interval, wherein the main rope termination is positioned at truss end, capital place, and the every end of inferior rope termination is positioned at truss span 1/5 place, and 1/5 place by the vertical strut in first place of two tacklines and adjacent truss end on the end node place be connected, such layout makes member stress more reasonable, system more succinctly, moulding is more attractive in appearance.But a series of problems have also been brought simultaneously, in truss string structure, difficult and the vertical strut of the prestressed cable of lower edge effectively is connected and is fastening, cause drag-line eccentric easily, increase frictional force, loss of prestress is bigger, the stressed flexing of securing member, and string props up rope, the strut of latticed shell structure, actual internal force size and the distribution and the different design of net mould component after finally causing pre-stress construction to be finished, and this will have a negative impact to the mechanical property that whole string props up structure.
String props up latticed shell structure pre-stress construction common method at present has: (1) subsection tension rope method.(2) two ends stretch-draw jacking vertical rod method.And rope and vertical strut between geometrical relationship and frictional property between the two, tension sequence etc. must influence loss of prestress, and string props up rope, the strut of latticed shell structure, actual internal force size and the distribution and the different design of net mould component after finally causing pre-stress construction to be finished, and this will have a negative impact to the mechanical property that whole string props up structure.
Summary of the invention
The present invention solves the deficiencies in the prior art, provides that a kind of that multiple string is propped up latticed shell structure lower edge prestressed cable is fastening and prop up the lower-chord panel point fastener and the fastening method for stretching thereof of structure with the multiple string that strut effectively is connected.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of multiple string props up the lower-chord panel point fastener of structure, comprise the strut connector, the upper end of described strut connector is the strut transition shoulder, described strut connector middle part is provided with the groove that Open Side Down, be complementary with the strut connector and be fastened with the cableway holder, described cableway holder middle part is provided with the montant of reeving, the upper end of the described montant of reeving is a low groove, described montant and the groove of reeving is complementary, described groove and low groove form the duct of reeving, and the described duct of reeving is the trend curve shape.
Beat the slope and handle at strut transition shoulder place, the double fierce backing plate that is connected such as do that strut and fastener are taked.When rope penetrates the duct, by from being screwed into high-strength bolt in the cableway holder of lower end to the strut connector of upper end, reach the lower edge prestressed cable fastening and and the effective purpose of connecting of strut; Pull bar engaging lug buttress is welded in upper end strut connector sidewall according to the angle between pull bar and the strut.
The present invention has following advantage:
(1), construction precision height.Owing to adopted multiple string to prop up the lower-chord panel point fastener of structure, can be simpler, accurate and effective to carry out lower-chord panel point fastening, make that this fastener still can step up continuous rope behind Suo Shouli, be not shifted, and can prevent the off-centre of drag-line, reduce the loss of stretching force, not can to drag-line exert an influence and also attractive in appearance, antiseptic effect is good.Therefore guaranteed drag-line, the prestressing force precision of vertical strut etc.
(2), construction cost is low.The multiple string that adopts props up the lower-chord panel point fastener simple structure, easy to operate of structure, and the construction precision height, can avoid adjusting repeatedly the resources such as time, manpower and materials of Suo Li, so construction cost reduces significantly.
(3), structure is safe in utilization.Because it is fastening to adopt steel-casting to carry out, its bearing capacity height, and can effectively prevent from when the stretch-draw of lower edge drag-line the local failure of securing member is prevented the stressed flexing of securing member, increased the safety of structure.
(4), construction efficiency height.Multiple string prop up latticed shell structure adopt stage by stage, in batches, classification symmetry method for stretching speed of application is fast, method is simple, effect is obvious.
As preferably, the groove in the described strut connector is " ∩ " type, and the low groove in the described montant of reeving is " ∪ " type, and described cableway holder is " ⊥ " type, and the cableway face in the described duct of reeving is provided with a mao tooth.
As preferably, the radian of described groove upper end is 170 °~180 °, and the radian of described low groove is 150 °~170 °, and the low groove internal diameter is than the little 2~3mm of groove internal diameter, and the height of described hair tooth is 1~2mm.
As preferably, the sidewall of described strut connector is provided with more than one pull bar and connects otic placode, described pull bar connects otic placode and the strut connector is the shape distribution that is inclined upwardly, described pull bar connects otic placode and is provided with connecting hole, described cableway holder and strut connector are fastened by 4 groups of high-strength bolts, and 4 groups of high-strength bolts are evenly distributed on the bottom of cableway holder.
The bottom of strut connector is provided with the bolt blind hole.
As preferably, the sidewall of described strut connector is provided with a pair of pull bar and connects otic placode, and described pull bar connects otic placode and is and is dislocatedly distributed.
As preferably, the bottom of described strut connector and cableway holder is cylindric, and described cableway holder is integrated with the montant of reeving, and described strut connector and cableway holder are steel-casting.
Multiple string props up the fastening method for stretching of the lower-chord panel point of structure, according to the following steps:
(1), fastening:
1., with fierce lower ends that is connected to strut such as strut connectors;
Etc. strong weld: the welding that is exactly same intensity.
2., the utilization rotating disk puts rope, adopts mobile flatcar method that drag-line is decontroled to the other end gradually by truss one end, makes drag-line keep the linearity migration to installing on the moulding bed and lying low;
For prevent that cable body from contacting with ground in moving process, damage lasso protection layer or damage strand.
3., adopt the traction jack drag-line to be promoted at the truss two ends, when drag-line is reserved accurate sign near the groove lower end 10~50mm of strut connector, that an end Cable head is in place; In lifting process, with 1/2 span place distance is the control target, start the oil pump of the truss other end, one by one drag-line is reserved in the groove that accurate sign embeds this Pin all and strut connector from the bottom up from the Cable head end to end, and the montant of reeving of cableway holder snapped in the groove, and high-strength bolt screwed in blind hole in cableway holder bottom screw and the strut connector, and drag-line, cableway holder and strut connector are fixed and located, other end Cable head is in place;
Therefore the rope head is introduced bearing, and cable body snaps in fastener.
4., the diagonal angle tightens four high-strength bolts, holds out against the duct of reeving until rope; And the like finish the installation of other nodes and drag-line;
(2), fastening prestressed cable:
After the step (1), all primary and secondarys are carried out the drag-line pretension;
Main rope pretension: take the synchronous grading tension method in every truss structure two ends, by the order stretch-draw main rope of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre, the super stretch-draw to 110% of every truss structure two ends main rope stretch-draw point~115% pre-stress construction theoretical value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 110%~115%;
Every truss structure: with a certain main stress system of structure is a truss structure.
The method of synchronous grading tension method: make prestressed cable and latticed shell structure progressively enter stress, prevent that local component damage from reaching, malformation.
Single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 110%~115%: the classification of single synchronous tension refer to every batch, every truss structure two ends cable stretching point simultaneously, synchronously, grading tension, every symmetrical stretch-draw two Pin are one batch, 0% → 25% → 50% → 70% → 90% → 110%~115%, refer to by the stretch-draw prestressing force rope, make construction stretching power) from the theoretical construction stretching power of 0% → 25% → 50% → 70% → 90% → 110%~115%(.
Inferior rope pretension: take the synchronous grading tension method in every truss structure two ends, according to the order stretch-draw of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre time rope, time super stretch-draw of cable stretching point of every truss structure two ends is to 105% pre-stress construction controlling value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 105%~110%; All of stretch-draw rope is finished successively.
Single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 105%~110%:0% → 25% → 50% → 70% → 90% → 105%~110%, refer to by the stretch-draw prestressing force rope, make construction stretching power) from the theoretical construction stretching power of 0% → 25% → 50% → 70% → 90% → 105%~110%(.
As preferably, in the step (2), in stretching process, consider of the influence of time cable stretching to main rope stretch-draw, main rope pre-stress construction controlling value Duos 5%~10% than time super stretch-draw of rope pre-stress construction controlling value.
Therefore, a kind of multiple string of the present invention props up the lower-chord panel point fastener and the fastening method for stretching thereof of structure, and is rational in infrastructure, the construction precision height, and construction cost is low, increases the steel work safety, the construction efficiency height.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;
Fig. 3 is the structural representation of support joint element for bar of the present invention;
Fig. 4 is the structural representation of cableway holder among the present invention;
Fig. 5 is the structural representation of band strut among the present invention;
Fig. 6 is the schematic diagram of symmetrical stretch-draw main rope among the present invention;
Fig. 7 is the schematic diagram of symmetrical stretch-draw time rope among the present invention;
Fig. 8 is the sectional structure schematic diagram of cableway face among the present invention;
Fig. 9 is single Pin truss string structure main rope structural representation among the present invention;
Figure 10 is single Pin truss string structure time Cable Structure schematic diagram among the present invention;
Figure 11 is the structural representation of stretch-draw flow process I among the present invention;
Figure 12 is the structural representation of stretch-draw flow process II among the present invention;
Figure 13 is the structural representation of stretch-draw flow process III among the present invention;
Figure 14 is the structural representation of stretch-draw flow process IV among the present invention.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1: as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 8, a kind of multiple string props up the lower-chord panel point fastener of structure, comprise strut connector 1, the upper end of described strut connector 1 is a strut transition shoulder 2, described strut connector 1 middle part is provided with the groove 3 that Open Side Down, be complementary with strut connector 1 and be fastened with cableway holder 4, the bottom of strut connector 1 and cableway holder 4 is cylindric, strut connector 1 and cableway holder 4 are steel-casting, described cableway holder 4 middle parts are provided with the montant 5 of reeving, cableway holder 4 is integrated with the montant 5 of reeving, the upper end of the described montant 5 of reeving is a low groove 6, the described montant 5 of reeving is complementary with groove 3, described groove 3 and low groove 6 form the duct 7 of reeving, the described duct 7 of reeving is the trend curve shape, groove 3 in the described strut connector 1 is " ∩ " type, low groove 6 in the described montant 5 of reeving is " ∪ " type, described cableway holder 4 is " ⊥ " type, the cableway face 13 in the described duct 7 of reeving is provided with mao tooth 14, the radian of described groove 3 upper ends is 170 °, the radian of described low groove 6 is 150 °, the low groove internal diameter is than the little 2mm of upper groove internal diameter, the height of described hair tooth is 1mm, the sidewall of described strut connector 1 is provided with more than one pull bar and connects otic placode 8, described pull bar connects otic placode 8 and is the shape distribution that is inclined upwardly with strut connector 1, described pull bar connects otic placode 8 and is provided with connecting hole 9, described cableway holder 4 is fastened by 4 groups of high-strength bolts 10 with strut connector 1,4 groups of high-strength bolts 10 are evenly distributed on the bottom of cableway holder 4, the sidewall of described strut connector 1 is provided with a pair of pull bar and connects otic placode 8, and described pull bar connects otic placode 8 and is and is dislocatedly distributed.
As Fig. 5, Fig. 6 and shown in Figure 7, multiple string props up the fastening method for stretching of the lower-chord panel point of structure, and is progressive according to the following steps:
(1), fastening:
1., with fierce lower ends that is connected to strut such as strut connectors;
2., the utilization rotating disk puts rope, adopts mobile flatcar method that drag-line is decontroled to the other end gradually by truss one end, makes drag-line keep the linearity migration to installing on the moulding bed and lying low;
3., adopt the traction jack drag-line to be promoted at the truss two ends, when drag-line is reserved accurate sign near the groove lower end 10mm of strut connector, that an end Cable head is in place; In lifting process, with 1/2 span place distance is the control target, start the oil pump of the truss other end, one by one drag-line is reserved in the groove that accurate sign embeds this Pin all and strut connector from the bottom up from the Cable head end to end, and the montant of reeving of cableway holder snapped in the groove, and high-strength bolt screwed in blind hole in cableway holder bottom screw and the strut connector, and drag-line, cableway holder and strut connector are fixed and located, other end Cable head is in place;
4., the diagonal angle tightens four high-strength bolts, holds out against the duct of reeving until rope; And the like finish the installation of other nodes and drag-line;
(2), fastening prestressed cable:
After the step (1), all primary and secondarys are carried out the drag-line pretension;
Main rope pretension: take the synchronous grading tension method in every truss structure two ends, by the order stretch-draw main rope of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre, main rope stretch-draw point super stretch-draw in every truss structure two ends is to 110% pre-stress construction theoretical value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 110%;
Inferior rope pretension: take the synchronous grading tension method in every truss structure two ends, according to the order stretch-draw of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre time rope, time super stretch-draw of cable stretching point of every truss structure two ends is to 105% pre-stress construction controlling value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 105%; All of stretch-draw rope is finished successively;
In the step (2), in stretching process, consider the influence of time cable stretching to main rope stretch-draw, main rope pre-stress construction controlling value Duos 5% than time super stretch-draw of rope pre-stress construction controlling value.
As Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13 and shown in Figure 14,
Fig. 9 is single Pin truss string structure main rope elevation;
Figure 10 is single Pin truss string structure time rope elevation;
Figure 11 is the fierce lower ends that are connected to strut such as strut connector;
Figure 12 is the prestressed rope, and fastening;
Figure 13 is the synchronous grading tensions in two ends;
Figure 14 finishes for stretch-draw.
The technique effect that is reached:
1, behind the Suo Shouli, fastener with continuously between rope relative slide displacement amount be 0;
2, each Pin drag-line is in stretching process, and Suo Li influences each other less, within 10% scope;
3, reduce the loss of stretching force in the rope, Suo Li and design Suo Li differ within 4% scope, and structural element is (98 ~ 102) % design internal force value at the operational phase component internal force;
4, in the drag-line stretching process, bearing horizontal movement<10mm.
Embodiment 2:
Multiple string props up the fastening method for stretching of the lower-chord panel point of structure, and is progressive according to the following steps:
(1), fastening:
1., with fierce lower ends that is connected to strut such as strut connectors;
2., the utilization rotating disk puts rope, adopts mobile flatcar method that drag-line is decontroled to the other end gradually by truss one end, makes drag-line keep the linearity migration to installing on the moulding bed and lying low;
3., adopt the traction jack drag-line to be promoted at the truss two ends, when drag-line is reserved accurate sign near the groove lower end 30mm of strut connector, that an end Cable head is in place; In lifting process, with 1/2 span place distance is the control target, start the oil pump of the truss other end, one by one drag-line is reserved in the groove that accurate sign embeds this Pin all and strut connector from the bottom up from the Cable head end to end, and the montant of reeving of cableway holder snapped in the groove, and high-strength bolt screwed in blind hole in cableway holder bottom screw and the strut connector, and drag-line, cableway holder and strut connector are fixed and located, other end Cable head is in place;
4., the diagonal angle tightens four high-strength bolts, holds out against the duct of reeving until rope; And the like finish the installation of other nodes and drag-line;
(2), fastening prestressed cable:
After the step (1), all primary and secondarys are carried out the drag-line pretension;
Main rope pretension: take the synchronous grading tension method in every truss structure two ends, by the order stretch-draw main rope of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre, main rope stretch-draw point super stretch-draw in every truss structure two ends is to 113% pre-stress construction theoretical value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 113%;
Inferior rope pretension: take the synchronous grading tension method in every truss structure two ends, according to the order stretch-draw of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre time rope, time super stretch-draw of cable stretching point of every truss structure two ends is to 105% pre-stress construction controlling value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 108%; All of stretch-draw rope is finished successively;
In the step (2), in stretching process, consider the influence of time cable stretching to main rope stretch-draw, main rope pre-stress construction controlling value Duos 8% than time super stretch-draw of rope pre-stress construction controlling value.
The technique effect that is reached:
1, behind the Suo Shouli, fastener with continuously between rope relative slide displacement amount be 0;
2, each Pin drag-line is in stretching process, and Suo Li influences each other less, within 10% scope;
3, reduce the loss of stretching force in the rope, Suo Li and design Suo Li differ within 4% scope, and structural element is (98 ~ 102) % design internal force value at the operational phase component internal force;
4, in the drag-line stretching process, bearing horizontal movement<10mm.
Embodiment 3:
Multiple string props up the fastening method for stretching of the lower-chord panel point of structure, and is progressive according to the following steps:
(1), fastening:
1., with fierce lower ends that is connected to strut such as strut connectors;
2., the utilization rotating disk puts rope, adopts mobile flatcar method that drag-line is decontroled to the other end gradually by truss one end, makes drag-line keep the linearity migration to installing on the moulding bed and lying low;
3., adopt the traction jack drag-line to be promoted at the truss two ends, when drag-line is reserved accurate sign near the groove lower end 50mm of strut connector, that an end Cable head is in place; In lifting process, with 1/2 span place distance is the control target, start the oil pump of the truss other end, one by one drag-line is reserved in the groove that accurate sign embeds this Pin all and strut connector from the bottom up from the Cable head end to end, and the montant of reeving of cableway holder snapped in the groove, and high-strength bolt screwed in blind hole in cableway holder bottom screw and the strut connector, and drag-line, cableway holder and strut connector are fixed and located, other end Cable head is in place;
4., the diagonal angle tightens four high-strength bolts, holds out against the duct of reeving until rope; And the like finish the installation of other nodes and drag-line;
(2), fastening prestressed cable:
After the step (1), all primary and secondarys are carried out the drag-line pretension;
Main rope pretension: take the synchronous grading tension method in every truss structure two ends, by the order stretch-draw main rope of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre, main rope stretch-draw point super stretch-draw in every truss structure two ends is to 115% pre-stress construction theoretical value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 115%;
Inferior rope pretension: take the synchronous grading tension method in every truss structure two ends, according to the order stretch-draw of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre time rope, time super stretch-draw of cable stretching point of every truss structure two ends is to 105% pre-stress construction controlling value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 110%; All of stretch-draw rope is finished successively;
In the step (2), in stretching process, consider the influence of time cable stretching to main rope stretch-draw, main rope pre-stress construction controlling value Duos 10% than time super stretch-draw of rope pre-stress construction controlling value.
The technique effect that is reached:
1, behind the Suo Shouli, fastener with continuously between rope relative slide displacement amount be 0;
2, each Pin drag-line is in stretching process, and Suo Li influences each other less, within 10% scope;
3, reduce the loss of stretching force in the rope, Suo Li and design Suo Li differ within 4% scope, and structural element is (98 ~ 102) % design internal force value at the operational phase component internal force;
4, in the drag-line stretching process, bearing horizontal movement<10mm.

Claims (8)

1. a multiple string props up the lower-chord panel point fastener of structure, it is characterized in that: comprise strut connector (1), the upper end of described strut connector (1) is strut transition shoulder (2), described strut connector (1) middle part is provided with the groove that Open Side Down (3), be complementary with strut connector (1) and be fastened with cableway holder (4), described cableway holder (4) middle part is provided with the montant of reeving (5), the upper end of the described montant of reeving (5) is low groove (6), the described montant of reeving (5) is complementary with groove (3), described groove (3) and low groove (6) form the duct (7) of reeving, and the described duct of reeving (7) is the trend curve shape.
2. multiple string according to claim 1 props up the lower-chord panel point fastener of structure, it is characterized in that: the groove (3) in the described strut connector (1) is " ∩ " type, low groove (6) in the described montant of reeving (5) is " ∪ " type, described cableway holder (4) is " ⊥ " type, and the cableway face (13) in the described duct of reeving (7) is provided with a mao tooth (14).
3. multiple string according to claim 2 props up the lower-chord panel point fastener of structure, it is characterized in that: the radian of described groove (3) upper end is 170 °~180 °, the radian of described low groove (6) is 150 °~170 °, the low groove internal diameter is than the little 2~3mm of groove internal diameter, and the height of described hair tooth is 1~2mm.
4. prop up the lower-chord panel point fastener of structure according to claim 1 or 2 or 3 described multiple strings, it is characterized in that: the sidewall of described strut connector (1) is provided with more than one pull bar and connects otic placode (8), described pull bar connects otic placode (8) and is the shape distribution that is inclined upwardly with strut connector (1), described pull bar connects otic placode (8) and is provided with connecting hole (9), described cableway holder (4) is fastened by 4 groups of high-strength bolts (10) with strut connector (1), and 4 groups of high-strength bolts (10) are evenly distributed on the bottom of cableway holder (4).
5. multiple string according to claim 4 props up the lower-chord panel point fastener of structure, it is characterized in that: the sidewall of described strut connector (1) is provided with a pair of pull bar and connects otic placode (8), and described pull bar connects otic placode (8) and is and is dislocatedly distributed.
6. prop up the lower-chord panel point fastener of structure according to claim 1 or 2 or 3 described multiple strings, it is characterized in that: the bottom of described strut connector (1) and cableway holder (4) is cylindric, described cableway holder (4) is integrated with the montant (5) of reeving, and described strut connector (1) and cableway holder (4) are steel-casting.
7. multiple string according to claim 1 props up the fastening method for stretching of the lower-chord panel point of structure, it is characterized in that according to the following steps:
(1), fastening:
1., with fierce lower ends that is connected to strut such as strut connectors;
2., the utilization rotating disk puts rope, adopts mobile flatcar method that drag-line is decontroled to the other end gradually by truss one end, makes drag-line keep the linearity migration to installing on the moulding bed and lying low;
3., adopt the traction jack drag-line to be promoted at the truss two ends, when drag-line is reserved accurate sign near the groove lower end 10~50mm of strut connector, that an end Cable head is in place; In lifting process, with 1/2 span place distance is the control target, start the oil pump of the truss other end, one by one drag-line is reserved in the groove that accurate sign embeds this Pin all and strut connector from the bottom up from the Cable head end to end, and the montant of reeving of cableway holder snapped in the groove, and high-strength bolt screwed in blind hole in cableway holder bottom screw and the strut connector, and drag-line, cableway holder and strut connector are fixed and located, other end Cable head is in place;
4., the diagonal angle tightens four high-strength bolts, holds out against the duct of reeving until rope; And the like finish the installation of other nodes and drag-line;
(2), fastening prestressed cable:
After the step (1), all primary and secondarys are carried out the drag-line pretension;
Main rope pretension: take the synchronous grading tension method in every truss structure two ends, by the order stretch-draw main rope of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre, the super stretch-draw to 110% of every truss structure two ends main rope stretch-draw point~115% pre-stress construction theoretical value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 110%~115%;
Inferior rope pretension: take the synchronous grading tension method in every truss structure two ends, according to the order stretch-draw of whole latticed shell structure symmetrical stretch-draw two Pin from both sides to the centre time rope, time super stretch-draw of cable stretching point of every truss structure two ends is to 105% pre-stress construction controlling value, single synchronous tension classification 0% → 25% → 50% → 70% → 90% → 105%~110%; All of stretch-draw rope is finished successively.
8. multiple string according to claim 7 props up the fastening method for stretching of the lower-chord panel point of structure, it is characterized in that: in the step (2), in stretching process, consider the influence of time cable stretching to main rope stretch-draw, main rope pre-stress construction controlling value Duos 5%~10% than time super stretch-draw of rope pre-stress construction controlling value.
CN 201110087424 2011-04-08 2011-04-08 Bottom chord node fastening device of multi-suspend structure and fastening tension method thereof Active CN102182251B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110087424 CN102182251B (en) 2011-04-08 2011-04-08 Bottom chord node fastening device of multi-suspend structure and fastening tension method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110087424 CN102182251B (en) 2011-04-08 2011-04-08 Bottom chord node fastening device of multi-suspend structure and fastening tension method thereof

Publications (2)

Publication Number Publication Date
CN102182251A true CN102182251A (en) 2011-09-14
CN102182251B CN102182251B (en) 2012-08-22

Family

ID=44568528

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110087424 Active CN102182251B (en) 2011-04-08 2011-04-08 Bottom chord node fastening device of multi-suspend structure and fastening tension method thereof

Country Status (1)

Country Link
CN (1) CN102182251B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105089163A (en) * 2015-06-24 2015-11-25 浙江东南网架股份有限公司 Lower-chord panel point fastening device of crossed truss string structure and fastening tensioning method
CN106088358A (en) * 2016-06-03 2016-11-09 北京工业大学 A kind of strut lower node of Levy type cable dome structure
CN108277924A (en) * 2018-03-14 2018-07-13 江苏恒久钢构有限公司 The cable tension method of truss string structure
CN108868157A (en) * 2018-07-24 2018-11-23 天津大学 A kind of CFRP drag-line self-heating node
CN111877181A (en) * 2020-08-27 2020-11-03 湖北宜昌攀科预应力技术服务有限公司 Prestressed beam string tensioning structure and tensioning method thereof
CN113700152A (en) * 2021-09-02 2021-11-26 山东建筑大学 Construction method of three-fork or V-shaped web member combined string structure
CN114250907A (en) * 2021-12-29 2022-03-29 中建科工集团有限公司 Beam string structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06313337A (en) * 1993-04-30 1994-11-08 Shiro Kato Roof structure and its construction method
CN101029519A (en) * 2007-03-23 2007-09-05 北京城建集团有限责任公司 Method for installing large-span two-way prestressed cable
CN201121367Y (en) * 2007-10-31 2008-09-24 北京市建筑设计研究院 Universal rotating spherical hinge node clamper with steel structure
CN101314961A (en) * 2008-06-24 2008-12-03 浙江大学 Dish shaped node suitable for joint of chord-tension truss stay rod and double-cable
CN202023262U (en) * 2011-04-08 2011-11-02 浙江东南网架股份有限公司 Device for tightening lower-chord panel point of multi-chord support structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06313337A (en) * 1993-04-30 1994-11-08 Shiro Kato Roof structure and its construction method
CN101029519A (en) * 2007-03-23 2007-09-05 北京城建集团有限责任公司 Method for installing large-span two-way prestressed cable
CN201121367Y (en) * 2007-10-31 2008-09-24 北京市建筑设计研究院 Universal rotating spherical hinge node clamper with steel structure
CN101314961A (en) * 2008-06-24 2008-12-03 浙江大学 Dish shaped node suitable for joint of chord-tension truss stay rod and double-cable
CN202023262U (en) * 2011-04-08 2011-11-02 浙江东南网架股份有限公司 Device for tightening lower-chord panel point of multi-chord support structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105089163A (en) * 2015-06-24 2015-11-25 浙江东南网架股份有限公司 Lower-chord panel point fastening device of crossed truss string structure and fastening tensioning method
CN106088358A (en) * 2016-06-03 2016-11-09 北京工业大学 A kind of strut lower node of Levy type cable dome structure
CN108277924A (en) * 2018-03-14 2018-07-13 江苏恒久钢构有限公司 The cable tension method of truss string structure
CN108868157A (en) * 2018-07-24 2018-11-23 天津大学 A kind of CFRP drag-line self-heating node
CN111877181A (en) * 2020-08-27 2020-11-03 湖北宜昌攀科预应力技术服务有限公司 Prestressed beam string tensioning structure and tensioning method thereof
CN113700152A (en) * 2021-09-02 2021-11-26 山东建筑大学 Construction method of three-fork or V-shaped web member combined string structure
CN113700152B (en) * 2021-09-02 2022-11-25 山东建筑大学 Construction method of three-fork or V-shaped web member combined string structure
CN114250907A (en) * 2021-12-29 2022-03-29 中建科工集团有限公司 Beam string structure
CN114250907B (en) * 2021-12-29 2023-08-15 中建科工集团有限公司 Beam string structure

Also Published As

Publication number Publication date
CN102182251B (en) 2012-08-22

Similar Documents

Publication Publication Date Title
CN102182251B (en) Bottom chord node fastening device of multi-suspend structure and fastening tension method thereof
CN105804247B (en) A kind of ridge burr supports cable dome structure
CN202090286U (en) Traction system suitable for self-anchored type double cable plane suspension bridge
CN102535348B (en) Method for tensioning stayed cables of hinged tower cable stayed bridge
CN102713071A (en) Method for constructing a suspension bridge using temporary cables under tensionless stay cable conditions, and temporary cable for same
CN105089163A (en) Lower-chord panel point fastening device of crossed truss string structure and fastening tensioning method
CN105780925A (en) Truss-hanging combined system installation construction method
CN105952049A (en) Dual-strut cable dome structure
CN109487912A (en) A kind of construction method of super-span truss-string-structure
CN102108748A (en) Quadrilateral endless rope chord supporting structure and construction process
CN101858053A (en) Stayed-cable anchor plate type anchoring structure of stayed-cable bridge cable tower
CN103334529A (en) Full-tension cable-strut roof structural system and construction method thereof
CN202578055U (en) Height and width adjustable greenhouse for coke oven building construction
CN106320519A (en) Steel sheet strip and cable net structure
CN201786002U (en) Sliding jig for construction of large-span steel structure
CN114182647A (en) Construction method for lifting and rotating weak arch
CN103850182A (en) Vertical skid-resistant friction plate used for improving skid-resistant safety of welding-type cable saddle
CN202023262U (en) Device for tightening lower-chord panel point of multi-chord support structure
CN204126297U (en) A kind of temporary support of steel truss roof
CN201588381U (en) Adjustable support frame for suspended floor
CN203307981U (en) Full-tension cable bar roof structure system
CN202064275U (en) Double-stayed-steel arch tower in-situ cantilever split joint structure
CN202577577U (en) Stay-cable arch structure
CN203007838U (en) Cable tower
CN102864840B (en) Pre-stressed steel frame for exerting pre-stress by support displacement method and fabrication method of pre-stressed steel frame

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant