(3) summary of the invention
The object of the present invention is to provide a kind of structure bearing type template member, this structure-bearing modular shuttering element itself is two-way Force transmission parts, when being applied to In-situ cast concrete board, can participate in the common power transmission of load-carrying construction, form two-way load-carrying construction, and have intensity height, strong, the characteristics such as cost is low, good integrity of rigidity shear resistance big, superimposed interface.
Solution of the present invention is on the basis of existing technology, comprise template, it is characterized in that also including at least one rack, rack is arranged on the template, rack is whole with the template and the formation that links to each other, rack is provided with upper chord, lower chord, web member, web member links to each other with lower chord with upper chord, on at least one node, there are at least three web members to link to each other, constitute netted three-dimensional member structure each other, described template is a cement, fiber, the template that filler constitutes is provided with prestressing reinforcing bar reinforce in the described template, described prestressing reinforcing bar reinforce serves as the lower chord of rack.Like this, when described template be cement, fiber, filler constitute template the time, template in light weight, the intensity height, rigidity is big, resistance to compression, shearing resistance, flexural capacity are strong, particularly carry, installation, easy construction, have reduced constructor's labour intensity significantly.Simultaneously, owing to also include at least one rack, rack is arranged on the template, and the formation that links to each other is whole, rack is provided with upper chord, lower chord, web member, web member links to each other with lower chord with upper chord, on at least one node, there are at least three web members to link to each other, constitute netted three-dimensional member structure each other, this structure bearing type template member itself is two-way Force transmission parts, when being applied to In-situ cast concrete board, but the common power transmission of participation structure, form two-way load-carrying construction, and the intensity height of modular shuttering element, rigidity is big; And, can improve the mutual wedge action between Cast-in-place concrete and the truss greatly, improve the shear resistance at the superimposed interface between Cast-in-place concrete and the template, improve the overall performance of superstructure, simultaneously, can give full play to the mechanical property of truss member, reduce the consumption of the reinforcing bar of In-situ cast concrete board, the thickness of attenuate In-situ cast concrete board reduces cost, in addition, modular shuttering element can be realized producing in enormous quantities in factory, help reducing production costs and construction cost, be applicable to the hollowcore slab of various cast-in-situ reinforced concretes or prestressed reinforced concrete, superstructure, roof system, sole plate, body of wall and bridge use, and are specially adapted to arch without beam and use.
Feature of the present invention is that also described rack is a flat plate framed structure.Like this, when the rack that is provided with on the template is flat plate framed structure, flat plate framed structure can very provide support power for template equably, each fulcrum of template all can effectively be supported, the shear resistance and the compressive strength of modular shuttering element have been improved, when described modular shuttering element was used, the setting of flat plate framed structure can reduce the interim support of modular shuttering element bottom, has reduced labour intensity and material cost.
Feature of the present invention is that also described rack is a quadrangular pyramid shape rack.Like this, when described rack was quadrangular pyramid shape rack, quadrangular pyramid shape rack had good stable, simultaneously, also possess good shear behavior, the modular shuttering element overall performance that adopts quadrangular pyramid shape rack to make is good, in light weight, can be widely used in the various cast-in-situ concrete structures.
Feature of the present invention also is to be connected with between described rack and the rack fixedly muscle.Like this, after being connected and fixed muscle between the rack, fixedly muscle firmly connects into the integral net frame system with rack, has improved the connective stability between the rack on the template greatly, make modular shuttering element piling up, transport, being difficult for being damaged in installation and the work progress, reduced the proportion of goods damageds of modular shuttering element.
Feature of the present invention is that also described fixedly muscle has upward fixedly muscle and following fixedly muscle.Like this, by last fixedly muscle and following fixedly being connected and fixed of muscle, rack is firmly connected into the integral net frame system, improved the connective stability between the rack on the template greatly, make modular shuttering element piling up, transport, being difficult for being damaged in installation and the work progress, reduced the proportion of goods damageds of modular shuttering element.
Feature of the present invention is that also described fixedly muscle is snakelike fixedly muscle, and described rack links to each other with template and is meant that template and snakelike fixedly muscle are welded to connect.Like this, when fixing muscle was snakelike fixedly muscle, snakelike fixingly further being connected between rack and the template reinforced increased substantially the shear resistance of modular shuttering element, make modular shuttering element pile up, transport, not fragile in installation and the work progress, reduced the proportion of goods damageds of modular shuttering element.
Feature of the present invention is also that described rack and template link to each other and is meant that template is connected with rack through suspension rod.Like this, when rack was connected by suspension rod with template, both all can separately make, and had improved production efficiency greatly, and simultaneously, both are easy to connect, can separately be transported to site of deployment and assemble, had made things convenient for to produce and use.
Feature of the present invention is also that described rack links to each other with template and is meant that template and web member are welded to connect.Like this, rack and template adopt the mode firm and reliable connection of welding, and rack is difficult for loose or dislocation, simultaneously, are welded to connect convenient and swiftly, and link cost is low, helps reducing production costs.
Feature of the present invention also is to be embedded with connector in the described template, and rack is connected with template by connector.Like this, template and rack all can divide the making of coming, transportation, be very easy to and manufacture, reduce the difficulty that is connected of template and rack, improved production efficiency, simultaneously, both also can separately transport, can reduce cost of transportation, and separately transport not fragile template, reduce the proportion of goods damageds of modular shuttering element effectively.
Feature of the present invention is that also the upper chord of described rack and lower chord are positioned at outside the template, and web member stretches into template inside, and is anchored in the template.Like this,, rack and template have been connected to form whole modular shuttering element, have improved the globality of modular shuttering element, made it pile up, transport, be difficult in installation and the work progress destroyed, reduced the proportion of goods damageds of modular shuttering element by the connection anchoring of web member.
Feature of the present invention is that also the upper chord of described rack and lower chord are positioned at outside the template, and the connector of lower chord and web member stretches into anchoring in the template.Like this,, rack and template have been connected to form whole modular shuttering element, have improved the globality of modular shuttering element, made it pile up, transport, be difficult in installation and the work progress destroyed, reduced the proportion of goods damageds of modular shuttering element by the connector anchoring of web member.
Feature of the present invention is that also described template is the strip integral mold plate.Like this, when template is the strip integral mold plate, modular shuttering element can be conveniently used in various different situations in application process, be specially adapted to little span plate, the two ends of modular shuttering element can directly be set up on load bearing wall or the beam, can reduce cross binding and longitudinal bracing rod member in a large number, simplify construction, reduce the application difficulty.
Feature of the present invention is that also described template is cement concrete or cement mortar template.Like this, when template was cement concrete or cement mortar template, template was manufactured conveniently, and thickness is very easily controlled, and simultaneously, the intensity height of template, rigidity are big, and long-time air storage is not perishable yet.
Feature of the present invention is that also the lower chord of described rack is embedded in cement concrete or the cement mortar template.Like this, after the lower chord of rack is embedded in the cement concrete template, rack and template have been combined into integral body, the good integrity of modular shuttering element, rack and template are difficult for division and destroy, make modular shuttering element pile up, transport, cracky not in installation and the work progress, reduced the proportion of goods damageds of modular shuttering element effectively.
Feature of the present invention also is in the described template reinforce is arranged.Like this, after being provided with reinforce in the template, reinforce has increased substantially intensity, rigidity and the shear resistance of template, make template pile up, transport, not frangibility, damage in installation and the work progress, simultaneously, also improve the ability of template carrying load, improved the safety factor of modular shuttering element.
Feature of the present invention is that also described reinforce is the reinforce of net, hole, trellis.Like this, when reinforce is the reinforce of net, hole, trellis, the internal construction good integrity of template, can not form layer structure because of the setting of reinforce, thereby make template when bearing working load, be difficult for producing crack and delamination failure, guaranteed its overall performance.
Feature of the present invention is that also described reinforce is the reinforce of rib strip shaped.Like this, when reinforce is the reinforce of rib strip shaped, can suitably adjust the quantity of the reinforce of different directions according to the needs of varying strength, the internal construction good integrity of while template, can not form layer structure because of the setting of reinforce, thereby make template when bearing working load, be difficult for producing crack and delamination failure, guaranteed its overall performance.
Feature of the present invention is that also described reinforce and rack connect as one.Like this, after reinforce and rack connected as one, rack and reinforce had formed common stressed integral body, thereby make template and rack form whole modular shuttering element, have improved the overall performance of modular shuttering element.
Feature of the present invention also is to be extended with in the described template reinforcing bar or iron plate reinforce.Like this, when being extended with reinforcing bar or iron plate reinforce in the template, rack can be connected anchoring with template very easily, made things convenient for manufacturing of modular shuttering element, simultaneously, after described modular shuttering element was applied in the cast-in-situ concrete structure, reinforcing bar that stretches out or iron plate reinforce can combine with Cast-in-place concrete, make prefabricated modular shuttering element be combined into integral body with Cast-in-place concrete better, separation not easy to crack.
Feature of the present invention is that also there are at least two horizontal reinforcing bar reinforces at the two ends of described template.Like this, after there are at least two horizontal reinforcing bar reinforces at the two ends of template, the laterally anti-folding and the shear strength of template have been increased substantially, make it in handling or installation process, be difficult for amounting to destruction, simultaneously, also improve the weight bearing power of die component, can fully satisfy the construction requirement under the various situations.
Feature of the present invention also is to be provided with in the described template prestressing reinforcing bar reinforce.Like this, when being provided with prestressing reinforcing bar reinforce in the template, after template and rack combine, formed the prestress die board member, improved intensity, rigidity, tension, resistance to compression and the shear resistance of modular shuttering element, simultaneously, under the situation of equal design load, compare the template that is provided with prestressed reinforcement with common templates and can further reduce thickness, weight reduction.
Feature of the present invention is that also described prestressed reinforcement reinforce serves as the lower chord of rack.Like this, rack and template have formed whole modular shuttering element, and the prestressing force lower chord has improved the strength and stiffness of modular shuttering element, make modular shuttering element form the prestressing force template, increase substantially its resistance to compression tension and shear behavior, can fully satisfy the needs of various different situations.
Feature of the present invention is that also the surface of described template is a tungued-and-grooved face.Like this, when the surface of described template is that the modular shuttering element of tungued-and-grooved face is when being applied in the cast-in-situ concrete structure, tungued-and-grooved face has increased the bonding area of template and Cast-in-place concrete greatly, has improved the adhesion stress between template and the Cast-in-place concrete, makes its combination firm stable more.
Feature of the present invention also is described upper chord or/and lower chord is that the prestressing force upper chord is or/and the prestressing force lower chord.Like this, when upper chord or/and lower chord is the prestressing force upper chord during prestressing force lower chord, the prestressing force upper chord is or/and the prestressing force lower chord has improved the strength and stiffness of modular shuttering element, make modular shuttering element form the prestressing force template, increase substantially its resistance to compression tension and shear behavior, can fully satisfy the needs of various different situations.
Feature of the present invention also is between the upper chord of described adjacent rack and the lower chord by oblique drawknot bar drawknot.Like this, after the drawknot of drawknot bar is strengthened, strengthened the balance quality of rack greatly, made to be difficult for off normal between the rack, simultaneously, also strengthened the overall performance and the stability of modular shuttering element, made modular shuttering element not fragile in application process.
Feature of the present invention is that also the oblique drawknot bar of drawknot constitutes scissors drawknot bar between the upper chord of described adjacent rack and the lower chord.Like this, tiltedly behind the staggered member scissors drawknot bar of drawknot bar, formed stable gusseted strenthening member, adjacent rack can be offset, simultaneously, also strengthened the overall performance and the stability of modular shuttering element, made modular shuttering element not fragile in application process.
Feature of the present invention is that also the web member of described rack has at least one to be perpendicular web member.Like this, perpendicular web member is arranged in the web member of rack, modular shuttering element is when using, perpendicular web member can be passed to working load on the template, and then is passed on the support hack lever under it, has transmitted working load effectively, simultaneously, montant has guaranteed that also modular shuttering element is survivable in application process.
Feature of the present invention is that also the web member of described rack is made of continuous spirality ring muscle.Like this, when the web member of rack was made of the spirality ring muscle that connects, continuous spirality ring muscle has improved the shear resistance of modular shuttering element effectively, simultaneously, makes that also the globality of rack is better, and was survivable.
Feature of the present invention is that also described web member is the V muscle formation of elbow.Like this, when web member was the V muscle of elbow, the elbow of V muscle can be very easily be connected with the built-in connection that stretches out in the template, and perhaps elbow also can directly be anchored in the template, and elbow makes the web member anchoring more reliable and more stable.
Feature of the present invention is that also described web member is to carry the elbow V muscle of striding chord member on the back.Like this, web member is carried chord member on the back and is striden fixed limit, makes template and rack not easily separated, simultaneously, the elbow of V muscle can be very easily be connected with the built-in connection that stretches out in the template, and perhaps elbow also can directly be anchored in the template, and elbow makes the web member anchoring more reliable and more stable.
Feature of the present invention also is described upper chord or/and stiffener is arranged on the lower chord.Like this, when described upper chord or/and after on the lower chord stiffener being set, the warping resistance ability of upper chord or lower chord has obtained significantly strengthening, make upper chord and lower chord be difficult for the bending distortion, simultaneously, also improve resistance to compression, the shear resistance of rack, guaranteed the quality of modular shuttering element effectively.
Feature of the present invention also is on the described upper chord frange plate is arranged.Like this, after on the upper chord frange plate being set, the horizontal non-deformability of upper chord has obtained strengthening significantly, simultaneously, has also improved resistance to compression, the shear resistance of rack, has guaranteed the quality of modular shuttering element effectively.
Feature of the present invention also be described upper chord or/and lower chord or/and web member is T shape or L shaped or I shape or O shape bar.Like this, when described upper chord or/and lower chord or/and web member when being T shape or L shaped or I shape or O shape bar, form various difform racks, can fully satisfy the practical application of various different situations, particularly satisfied the construction application under the load stress complicated situation.
Feature of the present invention is that also at least one of described upper chord or lower chord or web member is the open hollow bar.Like this, when in described upper chord or lower chord or the web member open hollow bar being arranged, reduced the weight of rack significantly, improve the rigidity of rack, simultaneously, also can in the open hollow bar, inject concrete as required, formation intensity height, the steel pipe concrete structure that rigidity is big has made things convenient for practical application.
Feature of the present invention is that also at least one of described upper chord or lower chord or web member is the steel pipe concrete bar.Like this, when upper chord or lower chord or web member at least one was the steel pipe concrete bar, the strength and stiffness of rack and shear behavior had obtained strengthening significantly, have improved resistance to compression, the shear resistance of rack greatly, improved the combination property of modular shuttering element, made it can bear bigger working load.
Feature of the present invention is that also described upper chord is at least two parallel upper chord groups arranged side by side.Like this, when upper chord is side by side parallel upper chord group, the anti-pressure ability of modular shuttering element, shearing resistance and rupture strength height, the rack good stability on the template simultaneously, has also promoted the weight bearing power of modular shuttering element significantly, has improved its combination property.
Feature of the present invention is that also described lower chord is at least two parallel lower chord groups arranged side by side.Like this, when lower chord is side by side parallel upper chord group, the anti-pressure ability of modular shuttering element, shearing resistance and rupture strength height, the rack good stability on the template simultaneously, has also promoted the weight bearing power of modular shuttering element significantly, has improved its combination property.
Feature of the present invention is that also described upper chord or lower chord or web member are cold band rib steel muscle.Like this, when upper chord or lower chord or web member are cold band rib steel muscle, improved the intensity of rack, when modular shuttering element is applied in the cast-in-situ concrete structure, cold band rib steel muscle and Cast-in-place concrete are reliable and stable in conjunction with anchoring, thereby have guaranteed that template and Cast-in-place concrete are difficult for cracking destruction, have improved cast-in-place quality.
Feature of the present invention also be between described upper chord and the web member be connected to welding or screw mandrel is connected or the perforated pins connection.Like this, when adopting welding between described upper chord and the web member or screw mandrel is connected or during the perforated pins connection, upper chord and web member are convenient and fast connection, be connected firmly, and, make the connected mode between chord member and the web member more flexible, transport application site to after can assembling in advance, also can assemble, make things convenient for to practice in application site.
Feature of the present invention also be between described lower chord and the web member be connected to welding or screw mandrel is connected or the perforated pins connection.Like this, when between described lower chord and the web member be connected to welding or screw mandrel is connected or during the perforated pins connection, lower chord and web member are convenient and fast connection, be connected firmly, and, make the connected mode between chord member and the web member more flexible, transport application site to after can assembling in advance, also can assemble, make things convenient for to practice in application site.
Feature of the present invention is that also described template is provided with shuttering member.Like this, after shuttering member is applied in the cast-in-situ concrete structure, formed the cast-in-place and prefabricated hollow concrete structure that combines, shuttering member can be emptied the concrete that does not stress in the structure, has saved cost, has also reduced the weight of concrete structure simultaneously, improve its weight bearing power, improved the combination property of structure.
Feature of the present invention is that also described at least one shuttering member is arranged in the interval between the rack.Like this, after shuttering member is applied in the cast-in-situ concrete structure, formed the cast-in-place and prefabricated hollow concrete structure that combines, shuttering member can be emptied the concrete that does not stress in the structure, has saved cost, has also reduced the weight of concrete structure simultaneously, improve its weight bearing power, improved the combination property of structure.
Feature of the present invention is that also described shuttering member is vertically or/and the lateral separation arrangement.Like this, after described shuttering member was applied in the cast-in-situ concrete structure, Cast-in-place concrete had formed the two-way dark rib structure of cast-in-place concrete hidden rib or Cast-in-place concrete in pouring at interval, has improved the inside load-carrying construction of cast-in-situ concrete structure effectively.
Feature of the present invention is also that described shuttering member is unsettled and is arranged on the template.Like this, after described shuttering member was applied in the cast-in-situ concrete structure, Cast-in-place concrete poured in the space between shuttering member and the template and has formed the In-situ cast concrete board structure, has increased substantially the shock resistance of cast-in-situ concrete structure.
Feature of the present invention is that also described shuttering member is connected with rack.Like this, shuttering member firmly is fixed in the rack, makes its formwork in application process can not move the generation error, has guaranteed the structure accuracy of cast-in-situ concrete structure inside.
(5) specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
The present invention as shown in drawings, comprise template 1, it is characterized in that also including at least one rack 2, rack 2 is arranged on the template 1, rack 2 is whole with the template 1 and the formation that links to each other, rack 2 is provided with upper chord 3, lower chord 4, web member 5, web member 5 links to each other with lower chord 4 with upper chord 3, on at least one node 6, there are at least three web members 5 to link to each other, constitute netted three-dimensional member structure each other, described template 1 is a cement, fiber, the template that filler constitutes is provided with prestressing reinforcing bar reinforce 10 in the described template 1, described prestressing reinforcing bar reinforce 10 serves as the lower chord 4 of rack 2.In each accompanying drawing, 1 is template, and 2 is rack, and 3 is upper chord, and 4 is lower chord, and 5 is web member, and 6 is node, below in each accompanying drawing, number identically, its explanation is identical.As shown in Figure 1, structure bearing type template member comprises template 1, its described modular shuttering element also includes rack 2, rack 2 is arranged on the template 1, and the formation that links to each other is whole, and rack 2 is provided with upper chord 3, lower chord 4, web member 5, and web member 5 links to each other with lower chord 4 with upper chord 3, on node 6, there are three web members 5 to link to each other, constitute netted three-dimensional member structure each other.
As shown in figure 15, its described template 1 is the template of cement, fiber, filler formation.
Feature of the present invention is that also described rack 2 is flat plate framed structure.As shown in Figure 2, its described rack 2 is a flat plate framed structure.
This 10 bright feature is that also described rack 2 is quadrangular pyramid shape rack.As shown in Figure 3, its described rack 2 is a quadrangular pyramid shape rack.
Feature of the present invention also is to be connected with between described rack 2 and the rack 2 fixedly muscle 7.As shown in Figure 4, be connected with fixedly muscle 7 between its described rack 2 and the rack 2.
Feature of the present invention is that also described fixedly muscle 7 has upward fixedly muscle and following fixedly muscle.As shown in Figure 5, its described fixedly muscle 7 has upward fixedly muscle and following fixedly muscle.
Feature of the present invention is that also described fixedly muscle 7 is snakelike fixedly muscle, and described rack 2 links to each other with template 1 and is meant that template 1 and snakelike fixedly muscle 7 are welded to connect.As shown in Figure 6, its described fixedly muscle 7 is snakelike fixedly muscle, and rack 2 links to each other with template 1 and is meant that template 1 and snakelike fixedly muscle 7 are welded to connect.
Feature of the present invention is also that described rack 2 and template 1 links to each other and is meant that template 1 is connected with rack 2 through suspension rod 8.As shown in Figure 7, its described rack 2 and template 1 links to each other and is meant that template 1 is connected with rack 2 through suspension rod 8.
Feature of the present invention is also that described rack 2 links to each other with template 1 and is meant that template 1 and web member 5 are welded to connect.As shown in Figure 8, its described rack 2 links to each other with template 1 and is meant that template 1 and web member 5 are welded to connect.
Feature of the present invention also is to be embedded with connector 9 in the described template 1, and rack 2 is connected with template 1 by connector 9.As shown in Figure 9, be embedded with connector 9 in its described template 1, rack 2 is connected with template 1 by connector 9.
Feature of the present invention is that also the upper chord 3 of described rack 2 and lower chord 4 are positioned at outside the template 1, and web member 5 stretches into template 1 inside, and is anchored in the template 1.As shown in figure 10, the upper chord 3 of its described rack 2 and lower chord 4 are positioned at outside the template 1, and web member 5 stretches into template 1 inside, and is anchored in the template 1.
Feature of the present invention is that also the upper chord 3 of described rack 2 and lower chord 4 are positioned at outside the template 1, and lower chord 4 stretches into anchoring in the template 1 with the connector 9 of web member 5.As shown in figure 11, the upper chord 3 of its described rack 2 and lower chord 4 are positioned at outside the template 1, and lower chord 4 stretches into anchoring in the template 1 with the connector 9 of web member 5.
Feature of the present invention is that also described template 1 is the strip integral mold plate.As shown in figure 11, its described template 1 is the strip integral mold plate.
Feature of the present invention is that also described template 1 is cement concrete or cement mortar template.As shown in figure 11, its described template 1 is the cement concrete template.
Feature of the present invention is that also the lower chord 4 of described rack 2 is embedded in cement concrete or the cement mortar template 1.As shown in Figure 6, the lower chord 4 of its described rack 2 is embedded in the cement concrete template 1.
Feature of the present invention also is in the described template 1 reinforce 10 is arranged.As shown in figure 12, in its described template 1 reinforce 10 is arranged.
Feature of the present invention also is the reinforce of described reinforce 10 for net, hole, trellis.As shown in figure 12, its described reinforce 10 is netted reinforce.
Feature of the present invention is that also described reinforce 10 is the reinforce of rib strip shaped.As shown in figure 13, its described reinforce 10 is the reinforce of rib strip shaped.
Feature of the present invention is that also described reinforce 10 connects as one with rack 2.As shown in figure 14, its described reinforce 10 connects as one with rack 2.
Feature of the present invention also is to be extended with in the described template 1 reinforcing bar or iron plate reinforce 10.As shown in figure 13, be extended with reinforcing bar reinforce 10 in its described template 1.
Feature of the present invention is that also there are at least two horizontal reinforcing bar reinforces 10 at the two ends of described template 1.As shown in figure 14, there is horizontal reinforcing bar reinforce 10 at the two ends of its described template 1.
Feature of the present invention also is to be provided with in the described template 1 prestressing reinforcing bar reinforce 10.As shown in figure 15, be provided with prestressing reinforcing bar reinforce 10 in its described template 1.
Feature of the present invention is that also described prestressing reinforcing bar reinforce 10 serves as the lower chord 4 of rack 2.As shown in figure 15, its described prestressing reinforcing bar reinforce 10 serves as the lower chord 4 of rack 2.
Feature of the present invention is that also the surface of described template 1 is a tungued-and-grooved face.As shown in figure 16, the surface of its described template 1 is a tungued-and-grooved face.
Feature of the present invention also is described upper chord 3 or/and lower chord 4 is that the prestressing force upper chord is or/and the prestressing force lower chord.As shown in figure 16, its described upper chord 3 and lower chord 4 are prestressing force upper chord and prestressing force lower chord.
Feature of the present invention also is between the upper chord 3 of described adjacent rack 2 and the lower chord 4 by oblique drawknot bar 11 drawknots.As shown in figure 16, between the upper chord 3 of its described adjacent rack 2 and the lower chord 4 by oblique drawknot bar 11 drawknots.
Feature of the present invention is that also the oblique drawknot bar 11 of drawknot between the upper chord 3 of described adjacent rack 2 and the lower chord 4 constitutes scissors drawknot bars.As shown in figure 16, the oblique drawknot bar 11 of drawknot constitutes scissors drawknot bar between the upper chord 3 of its described adjacent rack 2 and the lower chord 4.
Feature of the present invention is that also the web member 5 of described rack 2 has at least one to be perpendicular web member.What have in the web member 5 of its described rack 2 as shown in figure 17, is perpendicular web member.
Feature of the present invention is that also the web member 5 of described rack 2 is made of continuous spirality ring muscle.What have in the web member 5 of its described rack 2 as shown in figure 17, is that continuous spirality ring muscle constitutes.
Feature of the present invention is that also described web member 5 constitutes for the V muscle of elbow.As shown in figure 18, its described web member 5 is elbow the V muscle constitutes.
Feature of the present invention is that also described web member 5 is for carrying the elbow V muscle of striding chord member on the back.As shown in figure 18, its described web member 5 is for carrying the elbow V muscle of striding chord member on the back.
Feature of the present invention also is described upper chord 3 or/and stiffener 12 is arranged on the lower chord 4.As shown in figure 19, on its described upper chord 3 and the lower chord 4 stiffener 12 is arranged.
Feature of the present invention also is on the described upper chord 3 frange plate 13 is arranged.As shown in figure 20, on its described upper chord 3 frange plate 13 is arranged.
Feature of the present invention also be described upper chord 3 or/and lower chord 4 or/and web member 5 is T shape or L shaped or I shape or O shape bar.As shown in figure 21, its described upper chord 3 is an O shape bar.
Feature of the present invention is that also at least one of described upper chord 3 or lower chord 4 or web member 5 is the open hollow bar.As shown in figure 21, its described upper chord 3 is the open hollow bar.
Feature of the present invention is that also at least one of described upper chord 3 or lower chord 4 or web member 5 is the steel pipe concrete bar.As shown in figure 22, its described upper chord 3 is the steel pipe concrete bar.
Feature of the present invention is that also described upper chord 3 is at least two parallel upper chord groups arranged side by side.As shown in Figure 2, its described upper chord 3 is two parallel upper chord groups arranged side by side.
Feature of the present invention is that also described lower chord 4 is at least two parallel lower chord groups arranged side by side.As shown in figure 23, its described lower chord 4 is many parallel lower chord groups arranged side by side.
Feature of the present invention is that also described upper chord 3 or lower chord 4 or web member 5 are cold band rib steel muscle.As shown in figure 23, its described upper chord 3 is cold band rib steel muscle.
Feature of the present invention also be between described upper chord 3 and the web member 5 be connected to welding or screw mandrel is connected or the perforated pins connection.As shown in figure 23, being connected between its described upper chord 3 and the web member 5 is welded to connect.
Feature of the present invention also be between described lower chord 4 and the web member 5 be connected to welding or screw mandrel is connected or the perforated pins connection.As shown in figure 23, being connected between its described lower chord 4 and the web member 5 is welded to connect.
Feature of the present invention is that also described template 1 is provided with shuttering member 14.As shown in figure 24, its described template 1 is provided with shuttering member 14.
Feature of the present invention is that also described at least one shuttering member 14 is arranged in the interval between the rack 2.As shown in figure 24, its described a plurality of shuttering members 14 are arranged in the interval between the rack 2.
Feature of the present invention is that also described shuttering member 14 is vertically or/and the lateral separation arrangement.As shown in figure 24, its described shuttering member 14 longitudinal separations are arranged.
Feature of the present invention also is described shuttering member 14 unsettled being arranged on the template 1.As shown in figure 25, its described shuttering member 14 unsettled being arranged on the template 1.
Feature of the present invention is that also described shuttering member 14 is connected with rack 2.As shown in figure 26, its described shuttering member 14 is connected with rack 2.
During the invention process, can adopt cement concrete or cement mortar to make template 1, reinforcing bar or prestressed reinforcement reinforce 10 can be set in template 1, rack 2 can adopt reinforcing bar to be welded, and adopts welding or connector 9 to be connected to form whole getting final product with template 1.