Summary of the invention
But technical problem to be solved by this invention provides the permanent column template of a kind of keel imbedded and fastened assembly unit anti-cracking and seepage control; To improve the unfavorable factor that conventional template is brought; Improve structure durability simultaneously; Reduce the application life of structure later maintenance cost and final extending structure, for this reason, the present invention adopts following technical scheme:
It forms template by corner panel and connection strap; Said corner panel constitutes main body with the first perpendicular panel and second panel, and the both sides of corner panel have to the protruding connecting portion in the inboard of corner panel or the outside; The cross section of said connection strap is a concave groove; The adjacent connecting portion of two corner panels that the said Baltimore groove and the left and right sides are adjacent fastens and two corner panels that connection strap is adjacent with the left and right sides link together, and said corner panel and connection strap are selected following different materials making for use: superhigh tenacity cement-base composite material UHTCC, non metal fiber woven net and flock combined reinforced concrete base composite material, gauze wire cloth and flock combined reinforced concrete base composite material.
On the basis of adopting technique scheme, the present invention also can adopt following further technical scheme:
Used superhigh tenacity cement-base composite material UHTCC; Its composition comprises cement, active mineral admixture, aggregate, fiber and water, and active mineral admixture adopts the combination of flyash or flyash and following one or more materials: silicon ash, granulated blast-furnace slag, metakaolin; The maximum particle diameter of aggregate is no more than 0.5mm; Fiber is one or more the combination in vinal, polyethylene fibre, the aromatic polyamide fibre; Fibre length is that 5~25mm, diameter are that 0.015~0.055 mm, modulus of elasticity are that 30 ~ 150GPa, tensile strength are that 1000 ~ 3500MPa, ultimate elongation are 2%~15%, and the weight ratio of cement and each component of active mineral admixture is:
Cement 12%~55%
Flyash 45%~85%
Silicon ash 0~15%
Granulated blast-furnace slag 0~10%
Metakaolin 0~20%
Each components by weight sum of above cement and active mineral admixture satisfies 100%;
The weight of aggregate is 1%~70% with the ratio of cement and active mineral admixture gross weight, and the weight of water is 18%~58% with the ratio of cement and active mineral admixture gross weight, and the volume of fiber is 1.5%~2.5% of a cement-base composite material cumulative volume.
When described superhigh tenacity cement-base composite material UHTCC use vinal, when three kinds of fibers of polyethylene fiber peacekeeping aromatic polyamide fibre strengthen simultaneously, its proportioning is:
The weight ratio of cement and each component of active mineral admixture is: cement 25%, flyash 60%, silicon ash 2%, granulated blast-furnace slag 8%, metakaolin 5%;
The maximum particle diameter of aggregate is 0.5mm, and aggregate weight is 40% with the ratio that cement adds the active mineral admixture gross weight, and the weight of water is 25% ~ 45% with the ratio that cement adds the active mineral admixture gross weight; The volume of fiber is 1.8% ~ 2.3% of a cement-base composite material cumulative volume;
The polyethylene fibre length that adopts is 12mm, and diameter is 0.039mm, and tensile strength is 1620MPa, and modulus of elasticity is 42.8GPa, and ultimate elongation is 6%, and volume is 1.2% ~ 1.5% of a cement-base composite material cumulative volume; Polyethylene fibre length is 12.7mm, and diameter is 0.038mm, and tensile strength is 2700MPa, and modulus of elasticity is 120GPa, and ultimate elongation is 3.5%, and volume is 0.4% ~ 0.9% of a cement-base composite material cumulative volume; Aromatic polyamide fibre length is 15mm, and diameter is 0.015mm, and tensile strength is 2800MPa, and modulus of elasticity is 132GPa, ultimate elongation 2.4%, and volume is 0.2% ~ 0.4% of a cement-base composite material cumulative volume.
When described superhigh tenacity cement-base composite material UHTCC used vinal and two kinds of fibers of aromatic polyamide fibre to strengthen simultaneously, its proportioning was:
Each components by weight of cement and active mineral admixture is: cement 30%, flyash 52%, granulated blast-furnace slag 3%, metakaolin 15%;
The maximum particle diameter of aggregate is 0.5mm, and aggregate weight is 65% with the ratio that cement adds the active mineral admixture gross weight, and the weight of water is 20% ~ 55% with the ratio that cement adds the active mineral admixture gross weight; The volume of fiber is 1.8% ~ 2.2% of a cement-base composite material cumulative volume;
The vinal length that adopts is 12mm, and diameter is 0.039mm, and tensile strength is 1620MPa, and modulus of elasticity is 42.8GPa, and ultimate elongation is 6%, and volume is 1.6% ~ 2.0% of a cement-base composite material cumulative volume; Aromatic polyamide fibre length is 15mm, and diameter is 0.015mm, and tensile strength is 2800MPa, and modulus of elasticity is 132GPa, ultimate elongation 2.4%, and volume is 0.2% ~ 0.4% of a cement-base composite material cumulative volume.
When described superhigh tenacity cement-base composite material UHTCC used vinal and two kinds of fibers of polyethylene fibre to strengthen simultaneously, its proportioning was:
Each components by weight of cement and active mineral admixture is: cement 55%, flyash 45%, the model of cement are P.II 52.5 R;
The maximum particle diameter of aggregate is 0.5mm, and the weight of aggregate is 50% with the ratio that cement adds the active mineral admixture gross weight, and the weight of water is 40% ~ 55% with the ratio that cement adds the active mineral admixture gross weight; The volume of fiber is 1.8% ~ 2.2% of a cement-base composite material cumulative volume;
The vinal length that adopts is 12mm, and diameter is that 0.039mm, tensile strength are that 1620MPa, modulus of elasticity are that 42.8GPa, ultimate elongation are 6%, and volume is 1.2% ~ 1.9% of a fibrous concrete cumulative volume; Polyethylene fibre length is 12.7mm, and diameter is 0.038mm, and tensile strength is 2700MPa, and modulus of elasticity is 120GPa, and ultimate elongation is 3.5%, and volume is 0.3% ~ 0.8% of a cement-base composite material cumulative volume.
Said non metal fiber woven net and flock combined reinforced concrete base composite material are made up of non metal fiber woven net, nonmetal short fiber and cement based matrix, and said non metal fiber woven net comprises: Carbon Fibre Textile, aramid fiber mesh grid, alkali-resistant glass fibre mesh grid, vinal mesh grid, polyethylene fibre mesh grid or the assorted fibre mesh grid of being processed by above fiber shuffling; Nonmetal short fiber comprises: one or more in vinal, polyethylene fibre, carbon fiber, the aramid fiber; The constituent of cement based matrix comprises: one or more in portland cement, high alumina cement, the sulphate aluminium cement, active mineral fine mineral admixture, and water reducing agent, meticulous sand, said active mineral fine mineral admixture is the material with pozzolanic activity.
The material of pozzolanic activity comprises one or more in flyash, silica flour, the granulated blast-furnace slag, and the maximum particle diameter of meticulous sand is less than 0.6mm.
In non metal fiber woven net and flock combined reinforced concrete base composite material, the nonmetal short fiber percent by volume of this total composite volume relatively is 1.5 ~ 2.5%.
The inner surface of said corner panel is distributed with some grooves; The outer surface of said connection strap is distributed with some grooves; Said connecting portion is corner panel side walls shape; The adjacent wall thickness summation of two panels that the Baltimore groove width of said connection strap is adjacent with the left and right sides is suitable; And the adjacent wall of the two piece panels adjacent with the said left and right sides is interlocked; Join before and after the connection strap of same row, between the said adjacent corner panel, also pass through adhesive bond between corner panel and the connection strap.
The present invention be connected with many connection straps by polylith corner panel and said corner panel between transverse joint stagger mutually, the seam between connection strap and the transverse joint between the corner panel stagger each other and connect and compose column template.
The present invention can adjust the quantity and the big or small column template that is combined to form required size and shape of corner panel according to the use needs, and simultaneously, connection strap can guarantee the connection between corner panel and the corner panel, thereby forms complete template system.The size of column template of the present invention can satisfy the needs of difformity sizes such as square, rectangle according to actual needs through the size of adjustment corner panel, adjustment corner panel, connection strap quantity satisfy the needs of differing heights size.
Because adopt technical scheme of the present invention, the present invention used as template in the stage of building, build moulding after; Need not remove, and double protected apron and the external protection of doing structure becomes permanent formwork; Itself cost is low and also eliminated demolition cost and turnover expense, reduces engineering cost, can improve and solve the problems such as dismounting and utilization rate in the template constructions such as industry and the extra large structure in civilian construction structure, hydro-structure and port; Reduce construction intensity, can shorten the engineering time greatly.Meanwhile; Because this template is processed by superhigh tenacity cement-base composite material, non metal fiber woven net and flock combined reinforced concrete base composite material or gauze wire cloth and flock combined reinforced concrete base composite material; Have characteristics such as high stretching ductility and Crack Control ability, damage tolerance is high, energy absorption capability is strong; Can effectively reduce harmful crack of body structure surface generation and suppress the crack development; Its chloride-penetration resistance and anti-water permeation performance are much better than ordinary concrete, can significantly improve the durability and the application life of concrete structure.Simultaneously, adopt the structure of panel of the present invention and connector, template is by panel and connector assembly unit assembling, has to make simply, assemble easy to usely, and durability is high, controls the characteristics of crack developing.Column template provided by the present invention can also be born the part-structure load and reduce the column body amount of reinforcement, promotes overall efficiency.
The specific embodiment
Below in conjunction with accompanying drawing but the permanent column template specific embodiment of keel imbedded and fastened assembly unit anti-cracking and seepage control provided by the present invention is described further, this embodiment is to explanation of the present invention, rather than the present invention is made any qualification.
But the permanent column template of a kind of keel imbedded and fastened assembly unit anti-cracking and seepage control of present embodiment is connected with 20 two of connection straps by 10 of corner panels and said corner panel between transverse joint stagger mutually, the seam between connection strap and the transverse joint between the corner panel stagger each other and connect and compose.Said corner panel 1 constitutes main body with the first perpendicular panel 13 and second panel 14, and the both sides of corner panel 1 have to the protruding connecting portion 10 in the inboard of corner panel or the outside; The cross section of said connection strap 2 is a concave groove; The adjacent connecting portion 10 of two corner panels that the said Baltimore groove and the left and right sides are adjacent fastens and two corner panels that connection strap is adjacent with the left and right sides link together, and said corner panel and connection strap are selected following different materials making for use: superhigh tenacity cement-base composite material UHTCC, non metal fiber woven net and nonmetal flock combined reinforced concrete base composite material, gauze wire cloth and flock combined reinforced concrete base composite material.
The inner surface of said corner panel 1 is distributed with some grooves 11; The outer surface of said connection strap 2 is distributed with some grooves 21; Said connecting portion 10 is corner panel side walls shape; The adjacent wall thickness summation of two panels that the Baltimore groove width of said connection strap is adjacent with the left and right sides is suitable; And the adjacent wall of the two piece panels adjacent with the said left and right sides is interlocked; Join before and after the connection strap of same row, between the said adjacent corner panel 1, also pass through adhesive bond between corner panel 1 and the connection strap 2.
As Fig. 4 (a) (b) shown in, below introduce the implementation method under the above-mentioned situation.
1. use superhigh tenacity cement-base composite material UHTCC to make corner panel 1 and connection strap 2; Used superhigh tenacity cement-base composite material UHTCC; Its composition comprises cement, active mineral admixture, aggregate, fiber and water, and active mineral admixture adopts the combination of flyash or flyash and following one or more materials: silicon ash, granulated blast-furnace slag, metakaolin; The maximum particle diameter of aggregate is no more than 0.5mm; Fiber is one or more the combination in vinal, polyethylene fibre, the aromatic polyamide fibre; Fibre length is that 5~25mm, diameter are that 0.015~0.055 mm, modulus of elasticity are that 30 ~ 150GPa, tensile strength are that 1000 ~ 3500MPa, ultimate elongation are 2%~15%; The weight ratio of cement and each component of active mineral admixture is: cement (12%~55%), flyash (45%~85%), silicon ash (0~15%), granulated blast-furnace slag (0~10%), metakaolin (0~20%), and each components by weight sum of above cement and active mineral admixture satisfies 100%; The weight of aggregate is 1%~70% with the ratio of cement and active mineral admixture gross weight, and the weight of water is 18%~58% with the ratio of cement and active mineral admixture gross weight, and the volume of fiber is 1.5%~2.5% of a cement-base composite material cumulative volume.
2, when assembling, corner panel 1 is carried out assembly unit from bottom to top, the suitable interlaced arrangement of corner panel during assembling, thus make corner panel transverse joint not on same straight line, use the cementing agent bonding respectively to organize the cross section of corner panel, as Fig. 4 (a) (b) shown in.
3. use connection strap 2 to connect the bonding place, middle part of corner panels, and use each face of cementing agent bonding, as Fig. 4 (a) (b) shown in.The seam of connection strap 2 should be suitable interleaved with the transverse joint of corner panel, thereby make it not on same straight line.
During construction; Can carry out the size design and the assembling of corner panel and connection strap according to the needs of real size; Can realize that through first template of adjustment corner panel and the width of second template cross section of different size is rectangle or foursquare column template, adjustment corner panel, connection strap quantity satisfy the needs of differing heights size.Should adopt corner panel and connector alternative splicing to accomplish the overall package of column template from bottom to top, assembling mode is varied.
It is simple, easy to use that the present invention has making, improves the characteristics of structure durability and control crack developing, satisfies the application of a large amount of engineerings easily.