CN101260809A - Back surface stuck AB fastener self-adhering -type water-proof board construction process - Google Patents
Back surface stuck AB fastener self-adhering -type water-proof board construction process Download PDFInfo
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- CN101260809A CN101260809A CNA2008100180009A CN200810018000A CN101260809A CN 101260809 A CN101260809 A CN 101260809A CN A2008100180009 A CNA2008100180009 A CN A2008100180009A CN 200810018000 A CN200810018000 A CN 200810018000A CN 101260809 A CN101260809 A CN 101260809A
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Abstract
The invention discloses a construction technology by sticking AB buttons on the back of a self-adhesive waterproof plate, which comprises the following steps that: the preparation work before paving comprises that: a plurality of AB buttons are correspondingly stuck on the back of each waterproof plate; a substrate, that is a primary concrete surface, is treated; a geotextile is paved and a setting mark is marked. The AB buttons and the waterproof plates are paved: one side of each AB button is torn off and correspondingly fixed on the geotextile according to the setting mark, then the waterproof plates are paved on the geotextile in turn by the splicing performance between the A and the B surfaces of the AB buttons; the thin part of the lap joint of the waterproof plates is treated: after the treatment in a double welded joint overlap welding mode, a layer of double-surface self-adhesive waterproof plate jointing strips is stuck. A waterproof plate protecting film is torn off: the waterproof plate lap joint is treated and detected to be qualified, then a secondary lining is carried out; after reinforcing rods are bond and welded and before concrete is cast, the protecting film is torn off. The technology has simple steps and convenient construction and can properly solve the problems of difficult operation, unmanageable quality and hidden trouble of safety in the process of paving the self-adhesive waterproof plate.
Description
Technical field
The present invention relates to a kind of traffic tunnel field of engineering technology, particularly relate to a kind of construction technology of self-adhering-type splash guard of back side paving AB button.
Background technology
At present, in the traffic tunnel field of engineering technology, the anti-drainage level of building the tunnel of constructing all requires very high.For example, river, Liuyang tunnel water handling class requirement is an one-level, is that China's article one adopts the Line for Passenger Transportation tunnel based on water proof type, it adopts " skin-type " waterproof theory, the waterproof principle is " relying mainly on prevention multi-way prevention ", and the material that adopts is the self-adhering-type splash guard.The great advantage of self-adhering-type splash guard is to prevent that underground water from carrying out " channelling " between two linings and splash guard, and it is surplus in the of 410,000 square metre that the full tunnel in tunnel, river, Liuyang is laid area.The self-adhering-type splash guard is made up of three parts; be respectively tire base, diaphragm and the adhesive-layer between the two; mainly be to utilize adhesive-layer and concrete special role and make its strong bond at concrete external surface; diaphragm is used to protect adhesive-layer to avoid polluting or infringement, and the tire base is the same with common splash guard material.
The former house construction engineering that is mainly used in of self-adhering-type splash guard, tunnel, river, Liuyang use the self-adhering-type splash guard to still belong to the first time in the traffic tunnel engineering.At present, in constructing tunnel, the paving mode that the self-adhering-type splash guard is adopted is mainly: strip suspension laying method, thermofussion welding connection and bright nail laying method.
The strip suspension laying method is by being fixed on splash guard metal suspension ring (or suspender belt) behind, splash guard being hung on the fixed point that just props up the surface.There are some defectives in this paving mode in the practice of construction process, and its operating difficulties is located to produce phenomenons such as stress is concentrated and the generation fixed point comes off, splash guard destruction easily, and can't be guaranteed that splash guard is closely connected with first surface at suspension ring (or suspender belt).
The thermofussion welding connection is the same with common splash guard, all adopts the sweat soldering technology, but it needs the material of splash guard is improved, and needing needs the place of welding to reserve the tire base so that welding on the adhesive-layer surface at a certain distance.Like this, just destroyed the globality of adhesive-layer, influenced the waterproof effect of self-adhering-type splash guard, and when construction, can't guarantee that adhesive-layer reserves position and the accurate contraposition of a surperficial fixed point (hot melting plastic packing ring) just, thus operating difficulties, difficult quality control.
Bright nail laying method is to utilize adhesive-layer to have automatic healing function at 2mm on interior hole, earlier penetrating splash guard with nailing is fixed, adopt double-sided self-adhesive formula splash guard that piercing site is repaired then, but because this method has penetrated splash guard, thereby stayed potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of construction technology of self-adhering-type splash guard of back side paving AB button is provided, simple, the easy construction of its process can be properly settled existing operating difficulties in the self-adhering-type splash guard process of deployment, difficult quality control and the problem of potential safety hazard is arranged.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of construction technology of self-adhering-type splash guard of back side paving AB button is characterized in that this method may further comprise the steps:
(a) lay preparation before: at first, determining to lay with the self-adhering-type splash guard according to structure, the length of institute's construction tunnel is the fabric width and the quantity of splash guard, and the size of the corresponding definite paving AB of institute button, detain along a plurality of AB of the direction corresponding paving perpendicular at each splash guard back side again with laying direction; Secondly, to basic unit is that the preliminary bracing concrete surface of institute's construction tunnel is handled, excision anchor pole head and reinforcing bar are appeared, and with pea gravel concreten with the floating covering of existing pit on it, make that substrate surface is smooth, clean, dry and do not have sharp corners that the depth-to-width ratio of handling the back pit all is not more than 1: 10; Afterwards, lay one deck geotextiles and being fixed in the basic unit in the basic unit after handling well; At last, the mark position line, according to the fabric width of laying self-adhering-type splash guard, the corresponding wherein line that on splash guard, marks, the corresponding paving location of splash guard, the center line in tunnel and the fixed point position that splash guard is fixed of marking again on the geotextiles surface of being laid;
(b) lay AB button and splash guard: at first, the one side of the not paving of the paving AB of splash guard back side institute button in the step (a) torn take off, and one one correspondence is fixed on the geotextiles of being laid with reference to the position line that is marked; Afterwards, by the adhesive property correspondence between each AB button A, B face each splash guard is overlapped in turn and closely be laid on the geotextiles; Will spread extension in advance when described splash guard is laid, i.e. the splash guard shop of each lining cutting circulation hangs length and grows to than this lining cutting length and lack 1m; When this section was laid for hoop, splash guard also should be reserved 0.5～1m at the short abutment wall place in tunnel to the inverted arch section of institute's construction tunnel and splash guard;
(c) the thin portion of splash guard overlapping the slot handles: adopt conventional two soldered overlap welding modes that soldering is carried out in the overlapping the slot of the splash guard of laying in the step (b), afterwards, again at overlapping the slot place subsidy one deck double-sided self-adhesive type splash guard bonding jumper;
(d) take off the splash guard diaphragm: adopt conventional method to have or not breakage to detect to the welding quality and the splash guard of overlapping the slot described in the step (c), detects and carry out secondary lining again after qualified, the reinforcing bars that promptly carry out conventional two linings are again tied up and are welded and concrete pouring construction; After reinforcing bar is tied up weldering, before the concreting, throw off the diaphragm in the splash guard outside itself again.
After detection described in the step (d) is qualified,, throw off the diaphragm in this part splash guard outside itself immediately for the inverted arch part of institute's construction tunnel; Afterwards, also need on splash guard, to lay one deck M10 cement mortar protective course; Then, carry out secondary lining again.
During basic unit is handled described in the step (a), also need to be processed into the circular arc that radius is not less than 5cm with the external corner at the section variation place of institute's construction tunnel or turning is all floating, be processed into the circular arc that radius is not less than 7cm with inner corner trim is all floating.
Geotextiles described in the step (a) adopts nailing and plastic washers to fix, and the constant spacing of described nailing in institute construction tunnel arch is 0.8～1.0m, is 1.2～1.5m at the constant spacing of abutment wall and inverted arch section.
AB is detained when being fixed on the geotextiles described in the step (b), the mode or a plurality of nailing that adopt nailing and metallic gasket to cooperate one by one cooperate the mode of a bulk metal press strip to fix.
When described AB button adopted mode that nailing and metallic gasket cooperate one by one fixedly, its nailing and metallic gasket were arranged by blossom type; When described AB button adopted mode that a plurality of nailings cooperate a bulk metal press strip fixedly, the fixing hole position of its nailing on metal bead was the blossom type distribution.
During laying splash guard described in the step (b), the one side of the AB button that adopts the limit on geotextiles, fixedly to tear to take off, the mode of limit laying splash guard.
Splash guard described in the step (b) is laid in when the tunnel bearing of trend is vertically laid, and according to the longitudinal gradient direction in tunnel, the mode that adopts the downstream splash guard to push down the upstream splash guard is successively laid; Lay when promptly laying in the arch, tunnel when described splash guard is laid in along tunnel cross-sectional direction hoop, then splash guard is laid to abutment wall gradually by the arch, and the mode that adopts the bottom splash guard to push down the top splash guard is successively laid.
The two-layer splash guard of the overlapping the slot part after soldering described in the step (c) all is transparence and does not have bubble, and the soldered hot strength is not less than 70% of the own intensity of splash guard simultaneously, and peel strength is not less than 70N/cm; The welding machine that is adopted is automatic creeping-type hot-melt welding machine, is provided with one in the middle of the two soldereds of its lap-joint and is used to inflate and checks whether soldered welds tight cavity; Correspondingly, when the welding quality to soldered described in the step (d) detects, adopt the mode that entry needle and pressure meter join to detect, at first, with the cavity in the middle of two soldereds of syringe needle insertion of entry needle, inflate with artificial inflator again, when the internal pressure of cavity reaches 0.25～0.3MPa, stop inflation and keep 14～18min, when its internal pressure before and after 14～18min descends in 10%, illustrate that soldered is qualified; When its internal pressure fall is too fast, illustrate on this soldered not weld part that be coated in suds on the soldered this moment, carries out repair welding again in alveolate place, till air tight;
Described in the step (d) have or not breakage to detect to splash guard the time, adopt the vacuum leak detection cover to test, at first, start vacuum pump, when the vacuum list index be positioned at-during 0.04 ± 0.01Mpa, valve-off also closes tester in power-down state with vacuum pump, whether continue 0.8～1.2 minute observation pointer keeps original position motionless, when pointer is not moving, show that splash guard does not have breakage, it is qualified to detect; Otherwise, illustrating and detect defectively that correspondingly lay fritter double-sided self-adhesive type splash guard patch at breakage and repair, described patch periphery is trimmed to fillet, and patch must not be too small, its outward flange all is not less than 7cm from edge, damaged hole.
Splash guard fabric width described in the step (a) is 2m; Selected AB button is long to be 2m, and wide is 15cm; The constant spacing of paving between the AB at the splash guard back side of institute construction tunnel arch button is 0.5～0.7m, corresponding in step (b), splash guard herein is laid in along the tunnel cross-sectional direction and carries out the hoop laying, and the constant spacing of paving between the AB at the splash guard back side at institute all the other positions of construction tunnel button is 0.7～0.9m; Lap width between the geotextiles described in the step (a) is not less than 10cm;
Mode or a plurality of nailing that the button of AB described in the step (b) adopts nailing and metallic gasket to cooperate one by one cooperate the mode of a bulk metal press strip to fix, its nailing all arranges by blossom type and it is 20cm in the longitudinal pitch that AB buckles laying, and horizontal spacing is 10cm; The lap width of being laid between splash guard in the step (b) is 15cm, and the overlapping the slot of the geotextiles of the laying 50cm at least that to stagger in the overlapping the slot of described splash guard and the step (a), adopt two soldered overlap weldings to weld, its every the wide 1～1.5mm of soldered, article two, be provided with the wide cavity of a 20mm in the middle of the soldered, splash guard overlapping the slot and the constuction joint 1m at least that staggers, overlapping the slot of inverted arch hoop and the overlapping the slot of the arch wall hoop 1m at least that should stagger; After having welded, subsidize again in overlapping the slot place of described splash guard that one deck is wide to be the double-sided self-adhesive type splash guard bonding jumper of 35cm; The thickness of described M10 cement mortar protective course is 2～3mm.
The present invention compared with prior art has the following advantages: 1, simple, the easy construction of process, and can properly settle existing operating difficulties in the self-adhering-type splash guard process of deployment, difficult quality control, have the problem of potential safety hazard; 2, can guarantee splash guard and just a surface is closely connected, laying quality is high and to self-adhering-type splash guard not damaged, can effectively bring into play the waterproof effect of self-adhering-type splash guard; 3, it is processed the self-adhering-type splash guard back side, the one side of AB button in the paving of the splash guard back side, and the another side with the AB button during construction is fixed to a surface just, utilizes the adhesive property between A, the B face then, directly fixedly secures splash guard.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is a construction technology process block diagram of the present invention.
The specific embodiment
The construction technology of the self-adhering-type splash guard of a kind of back side paving of the present invention AB button may further comprise the steps:
Preparation before the first step, the laying:
At first, determining to lay with the self-adhering-type splash guard according to structure, the length of institute's construction tunnel is the fabric width and the quantity of splash guard, and the size of the corresponding definite paving AB of institute button, determine that according to the structure of institute's construction tunnel the fabric width of selected splash guard is 2m, determine to need to use the quantity of splash guard according to the length of institute's construction tunnel; Corresponding definite selected AB button is long to be 2m, and wide is 15cm.Then, detain along a plurality of AB of the direction corresponding paving perpendicular at each splash guard back side again with laying direction, the constant spacing of described paving between the AB at the splash guard back side of institute construction tunnel arch button is 0.5～0.7m, splash guard herein is laid in along the tunnel cross-sectional direction and carries out the hoop laying, and the constant spacing of paving between the AB at the splash guard back side at institute all the other positions of construction tunnel button is 0.7～0.9m.In addition, when basic unit is handled, also need to be processed into the circular arc that radius is 5～7cm with the external corner at the section variation place of institute's construction tunnel or turning is all floating, be processed into the circular arc that radius is 7～10cm with inner corner trim is all floating.
Secondly, to basic unit is that the preliminary bracing concrete surface of institute's construction tunnel is handled, excision anchor pole head and reinforcing bar are appeared, and with pea gravel concreten with the floating covering of existing pit on it, make that substrate surface is smooth, clean, dry and do not have sharp corners that the depth-to-width ratio of handling the back pit all is not more than 1: 10.
Afterwards, lay one deck geotextiles and being fixed in the basic unit in the basic unit after handling well.In this specific embodiment, geotextiles adopts nailing and plastic washers to fix, described nailing is 0.8～1.0m at the constant spacing of institute construction tunnel arch, and is 1.2～1.5m at the constant spacing of abutment wall and inverted arch section, and the lap width between geotextiles is 10～15cm.
At last, the mark position line, according to the fabric width of laying self-adhering-type splash guard, the corresponding wherein line that on splash guard, marks, the corresponding paving location of splash guard, the center line in tunnel and the fixed point position that splash guard is fixed of marking again on the geotextiles surface of being laid.In the practice, the general mode of snap the line that adopts marks, follow the fabric width according to splash guard, the center line of the splash guard that draws earlier outside institute's construction tunnel is center line and the splash guard fixed point position that the geotextiles surface markers goes out splash guard paving location, tunnel in the substrate surface of handling well then.
Second step, laying AB button and splash guard:
At first, the one side of the not paving of the paving AB of splash guard back side institute button in the first step torn take off, and one one correspondence is fixed on the geotextiles of being laid with reference to the position line that is marked; Afterwards, each splash guard is overlapped in turn and closely is laid on the geotextiles by the adhesive property correspondence between each AB button A, B face, the basal plane of the splash guard of laying should be solid, smooth, justify suitable and do not have drainage.When being fixed on the AB button on the geotextiles, corresponding employing nailing cooperates the mode of a bulk metal press strip to fix with mode or a plurality of nailing that metallic gasket cooperates one by one, and described metal bead is a tagger.Wherein, when AB button adopted mode that nailing and metallic gasket cooperate one by one fixedly, its nailing and metallic gasket were arranged by blossom type; And when AB button adopted mode that a plurality of nailings cooperate a bulk metal press strip fixedly, the fixing hole position of its nailing on metal bead was the blossom type distribution.No matter adopt above-mentioned which kind of fixed form, its nailing is all arranged by blossom type and it is 20cm along the spacing of AB button length direction promptly in the longitudinal pitch that AB buckles laying, and horizontal spacing is 10cm along the spacing of AB button width promptly.
When laying splash guard, the one side of the AB button of taking off is fixedly torn on the employing limit on geotextiles, and the mode of splash guard is laid on the limit.And, when laying splash guard, be with reference to the position line that is marked in the first step, the splash guard center line overlaps with the tunnel center line when promptly guaranteeing to lay.That is to say, the AB that splash guard AB button behind and initial stage of being fixed on before will be propped up geotextiles surface, surface, family simultaneously during laying detains corresponding one by one, otherwise will cause local splash guard to prop up the closely connected or fixing not firm situation in surface, family, and finally will influence waterproof effect with the initial stage.When laying splash guard, when splash guard is laid in when the tunnel bearing of trend is vertically laid, then according to the longitudinal gradient direction in tunnel, the mode that adopts the downstream splash guard to push down the upstream splash guard is successively laid; Lay when promptly laying in the arch, tunnel when described splash guard is laid in along tunnel cross-sectional direction hoop, then splash guard is laid to abutment wall gradually by the arch, and the mode that adopts the bottom splash guard to push down the top splash guard is successively laid.
In addition, will spread extension in advance when described splash guard is laid, i.e. the splash guard shop of each lining cutting circulation hangs length to be grown to than this lining cutting length and lacks 1m, generally will grow 1～10m, with assurance splash guard overlapping the slot and the constuction joint 1m at least that staggers; When this section was laid for hoop, splash guard also should be reserved 0.5～1m at the short abutment wall place in tunnel to the inverted arch section of institute's construction tunnel and splash guard, to guarantee splash guard overlapping the slot and the vertical constuction joint 0.5～1m that staggers.
In this specific embodiment, the lap width of being laid between splash guard is 15cm, and the overlapping the slot of the geotextiles of the laying 50cm at least that will stagger in the overlapping the slot of described splash guard and the first step.
The 3rd step, the thin portion of splash guard overlapping the slot handle: adopt conventional two soldered overlap welding modes that soldering is carried out in the overlapping the slot of the splash guard of laying in second step, afterwards, again at overlapping the slot place subsidy one deck double-sided self-adhesive type splash guard bonding jumper.
In this construction technology, processing and detection that splash guard ring, longitudinal lap joint are stitched are the keys that splash guard is laid, and the overlapping the slot of its splash guard is handled and adopted automatic creeping-type hot-melt welding machine to weld, and promptly adopts pair soldered overlap weldings to weld.The two-layer splash guard of the overlapping the slot part after soldering all is transparence and does not have bubble, and the soldered hot strength is not less than 70% of the own intensity of splash guard simultaneously, and peel strength is not less than 70N/cm.Being provided with wide being used to of a 20mm in the middle of the wide 1～1.5mm of every soldered of its lap-joint, two soldereds inflates and checks whether soldered welds tight cavity.Be noted that in addition, splash guard overlapping the slot and the constuction joint 1m at least that will stagger, allowable variation is～10mm.Simultaneously, overlapping the slot of inverted arch hoop and the overlapping the slot of the arch wall hoop 1m at least that should stagger, allowable variation～5cm.After having welded, subsidize again in overlapping the slot place of described splash guard that one deck is wide to be the double-sided self-adhesive type splash guard bonding jumper of 35cm.
The 4th step, take off the splash guard diaphragm: treat in the 3rd step the splash guard overlapping the slot is carried out after thin portion handles, corresponding again employing conventional method has or not breakage to detect to the welding quality and the splash guard of its soldered, detect and carry out secondary lining again after qualified, promptly carry out the reinforcing bars of conventional two linings again and tie up weldering and concrete pouring construction; And after reinforcing bar is tied up weldering, before the concreting, throw off the diaphragm in the splash guard outside itself again.
Owing to adopt two lap-welded modes of soldered to weld to the overlapping the slot of splash guard in the 3rd step, thereby the 4th earlier correspondingly have or not breakage to detect to the welding quality and the splash guard of soldered in the step, at first, determine the lap width of splash guard, whether the soldered surface smooth, smooth, calm pleat is arranged, and that soldered has or not is burned, burn-through, dry joint or leak weldering, when the two-layer splash guard that welds together is transparence, during no bubble, instant is one, shows that this soldered welding is tight.Afterwards, inflate to check whether soldered welds tight cavity owing to be provided with wide being used to of 20mm between two soldereds, thereby, when correspondingly the welding quality of soldered being detected, adopt the mode that entry needle and pressure meter join to detect.At first, with the cavity in the middle of two soldereds of syringe needle insertion of No. 5 entry needles, inflate with artificial inflator again, when the internal pressure of cavity reaches 0.25MPa, stop inflation and keep 15min, when its internal pressure before and after the 15min descends in 10%, illustrate that soldered is qualified; When its internal pressure fall is too fast, illustrate on this soldered not weld part that be coated in suds on the soldered this moment, carries out repair welding again in alveolate place, till air tight.Because adopt one deck double-sided self-adhesive type splash guard bonding jumper to carry out the self-adhesion overlap joint after the welding again, the detection of its overlap joint effect mainly tears feel by the scene and range estimation is main.Equally, also tear feel and range estimation for the adhesive property between splash guard and the concrete based on the scene.
When having or not breakage to detect to splash guard, adopt the vacuum leak detection cover to test, at first, start vacuum pump, when the vacuum list index be positioned at-during 0.04Mpa, valve-off also closes tester in power-down state with vacuum pump, whether continue 0.8～1.2 minute observation pointer keeps original position motionless, when pointer is not moving, show that splash guard does not have breakage, it is qualified to detect; Otherwise, illustrating and detect defectively that correspondingly lay fritter double-sided self-adhesive type splash guard patch at breakage and repair, described patch periphery is trimmed to fillet, and patch must not be too small, its outward flange all is not less than 7cm from edge, damaged hole.When repairing, at first be layed in breakage, and roll back and forth with light hammer of rubber hammer or rubber cylinder and to get final product for several times with scissors clip fritter double-sided self-adhesive type splash guard patch.
Treat that having or not breakage to detect to the welding quality of its soldered and splash guard carries out secondary lining again after qualified, promptly carry out the reinforcing bars of conventional two linings again and tie up weldering and concrete pouring construction.Because the main effect of splash guard diaphragm is to prevent that adhesive-layer is contaminated, and because adhesive-layer is a black, for ease of the damage situations of naked eyes identification splash guard, the splash guard diaphragm should be light color or light grey.In the practice, should grasp the opportunity that tears diaphragm off, reduce adhesive-layer open-assembly time, be after reinforcing bar is tied up weldering, before the concreting, throw off the diaphragm outside the splash guard itself again.
Inverted arch part for institute's construction tunnel; for preventing that reinforcing bar from tying up the high temperature weldering quarrel that is produced when welding and burning out splash guard and manually trample the destruction splash guard, on being laid on splash guard, also need lay the M10 cement mortar protective course that a layer thickness is 2～3mm.Thereby, for the inverted arch part of institute's construction tunnel, the splash guard overlapping the slot is carried out thin portion handles and respective detection qualified after, can throw off the diaphragm outside this part splash guard itself immediately; And after throwing off diaphragm, laying a layer thickness again on splash guard is the M10 cement mortar protective course of 2～3mm; Then, carry out secondary lining again.
After the splash guard laying finishes,, check whether it is closely connected with the preliminary bracing surface, and whether anchor point is firm with splash guard pop-up or the extruding that hand will fix.At vault, the splash guard of being laid in the scope of each square metre must not be recessed or horizontal.At first by the technician to carrying out quality examination, report relevant departments to check and accept again, after the acceptance(check), carry out two lined steel muscle, concrete applying again.To use the cushion block splash guard that bears down on one when reinforcing bar applies, make it and just a surface is closely connected, but need carefully simultaneously, be scratched, tear, puncture to prevent splash guard.During welded reinforcement, around its weld, block, in order to avoid the high temperature weldering is spent, the weldering quarrel burns out splash guard with asbestos cement sheet.Especially will prevent the destruction of splash guard during secondary lining by every means, the splash guard that causes this moment destroys and is difficult for being found, and also is difficult to repair even find again.During secondary lining, topping to be set, stop the vibrating spear point and touch the splash guard phenomenon, avoid damaging splash guard at splash guard place over against the concrete delivery spout.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.
Claims (10)
1. the construction technology of the self-adhering-type splash guard of back side paving AB button is characterized in that this technology may further comprise the steps:
(a) lay preparation before: at first, determining to lay with the self-adhering-type splash guard according to structure, the length of institute's construction tunnel is the fabric width and the quantity of splash guard, and the size of the corresponding definite paving AB of institute button, detain along a plurality of AB of the direction corresponding paving perpendicular at each splash guard back side again with laying direction; Secondly, to basic unit is that the preliminary bracing concrete surface of institute's construction tunnel is handled, excision anchor pole head and reinforcing bar are appeared, and with pea gravel concreten with the floating covering of existing pit on it, make that substrate surface is smooth, clean, dry and do not have sharp corners that the depth-to-width ratio of handling the back pit all is not more than 1: 10; Afterwards, lay one deck geotextiles and being fixed in the basic unit in the basic unit after handling well; At last, the mark position line, according to the fabric width of laying self-adhering-type splash guard, the corresponding wherein line that on splash guard, marks, the corresponding paving location of splash guard, the center line in tunnel and the fixed point position that splash guard is fixed of marking again on the geotextiles surface of being laid;
(b) lay AB button and splash guard: at first, the one side of the not paving of the paving AB of splash guard back side institute button in the step (a) torn take off, and one one correspondence is fixed on the geotextiles of being laid with reference to the position line that is marked; Afterwards, by the adhesive property correspondence between each AB button A, B face each splash guard is overlapped in turn and closely be laid on the geotextiles; Will spread extension in advance when described splash guard is laid, i.e. the splash guard shop of each lining cutting circulation hangs length and grows to than this lining cutting length and lack 1m; When this section was laid for hoop, splash guard also should be reserved 0.5～1m at the short abutment wall place in tunnel to the inverted arch section of institute's construction tunnel and splash guard;
(c) the thin portion of splash guard overlapping the slot handles: after adopting conventional two soldered overlap welding modes that soldering is carried out in the overlapping the slot of the splash guard of laying in the step (b), again at overlapping the slot place subsidy one deck double-sided self-adhesive type splash guard bonding jumper;
(d) take off the splash guard diaphragm: adopt conventional method to have or not breakage to detect to the welding quality and the splash guard of overlapping the slot described in the step (c), detects and carry out secondary lining again after qualified, the reinforcing bars that promptly carry out conventional two linings are again tied up and are welded and concrete pouring construction; After reinforcing bar is tied up weldering, before the concreting, throw off the diaphragm in the splash guard outside itself again.
2. according to the construction technology of the self-adhering-type splash guard of the described back side paving of claim 1 AB button, it is characterized in that: detect described in the step (d) qualified after, for the inverted arch part of institute's construction tunnel, throw off the diaphragm outside this part splash guard itself immediately; Afterwards, also need on splash guard, to lay one deck M10 cement mortar protective course; Then, carry out secondary lining again.
3. according to the construction technology of the self-adhering-type splash guard of claim 1 or 2 described back side paving AB button, it is characterized in that: during basic unit is handled described in the step (a), also need to be processed into the circular arc that radius is not less than 5cm with the external corner at the section variation place of institute's construction tunnel or turning is all floating, be processed into the circular arc that radius is not less than 7cm with inner corner trim is all floating.
4. according to the construction technology of the self-adhering-type splash guard of claim 1 or 2 described back side paving AB button, it is characterized in that: the geotextiles described in the step (a) adopts nailing and plastic washers to fix, the constant spacing of described nailing in institute construction tunnel arch is 0.8～1.0m, is 1.2～1.5m at the constant spacing of abutment wall and inverted arch section.
5. according to the construction technology of the self-adhering-type splash guard of claim 1 or 2 described back side paving AB button, it is characterized in that: AB is detained when being fixed on the geotextiles described in the step (b), the mode or a plurality of nailing that adopt nailing and metallic gasket to cooperate one by one cooperate the mode of a bulk metal press strip to fix.
6. according to the construction technology of the self-adhering-type splash guard of the described back side paving of claim 5 AB button, it is characterized in that: when described AB button adopted mode that nailing and metallic gasket cooperate one by one fixedly, its nailing and metallic gasket were arranged by blossom type; When described AB button adopted mode that a plurality of nailings cooperate a bulk metal press strip fixedly, the fixing hole position of its nailing on metal bead was the blossom type distribution.
7. according to the construction technology of the self-adhering-type splash guard of claim 1 or 2 described back side paving AB button, it is characterized in that: during laying splash guard described in the step (b), the one side of the AB button of taking off is fixedly torn on the employing limit on geotextiles, the mode of splash guard is laid on the limit.
8. according to the construction technology of the self-adhering-type splash guard of claim 1 or 2 described back side paving AB button, it is characterized in that: the splash guard described in the step (b) is laid in when the tunnel bearing of trend is vertically laid, according to the longitudinal gradient direction in tunnel, the mode that adopts the downstream splash guard to push down the upstream splash guard is successively laid; Lay when promptly laying in the arch, tunnel when described splash guard is laid in along tunnel cross-sectional direction hoop, then splash guard is laid to abutment wall gradually by the arch, and the mode that adopts the bottom splash guard to push down the top splash guard is successively laid.
9. according to the construction technology of the self-adhering-type splash guard of claim 1 or 2 described back side paving AB button, it is characterized in that: the two-layer splash guard of the overlapping the slot part after soldering described in the step (c) all is transparence and does not have bubble, the soldered hot strength is not less than 70% of the own intensity of splash guard simultaneously, and peel strength is not less than 70N/cm; The welding machine that is adopted is automatic creeping-type hot-melt welding machine, is provided with one in the middle of the two soldereds of its lap-joint and is used to inflate and checks whether soldered welds tight cavity; Correspondingly, when the welding quality to soldered described in the step (d) detects, adopt the mode that entry needle and pressure meter join to detect, at first, with the cavity in the middle of two soldereds of syringe needle insertion of entry needle, inflate with artificial inflator again, when the internal pressure of cavity reaches 0.25～0.3MPa, stop inflation and keep 14～18min, when its internal pressure before and after 14～18min descends in 10%, illustrate that soldered is qualified; When its internal pressure fall is too fast, illustrate on this soldered not weld part that be coated in suds on the soldered this moment, carries out repair welding again in alveolate place, till air tight;
Described in the step (d) have or not breakage to detect to splash guard the time, adopt the vacuum leak detection cover to test, at first, start vacuum pump, when the vacuum list index be positioned at-during 0.04 ± 0.01Mpa, valve-off also closes tester in power-down state with vacuum pump, whether continue 0.8～1.2 minute observation pointer keeps original position motionless, when pointer is not moving, show that splash guard does not have breakage, it is qualified to detect; Otherwise, illustrating and detect defectively that correspondingly lay fritter double-sided self-adhesive type splash guard patch at breakage and repair, described patch periphery is trimmed to fillet, and patch must not be too small, its outward flange all is not less than 7cm from edge, damaged hole.
10. according to the construction technology of the self-adhering-type splash guard of the described back side paving of claim 2 AB button, it is characterized in that: the splash guard fabric width described in the step (a) is 2m; Selected AB button is long to be 2m, and wide is 15cm; The constant spacing of paving between the AB at the splash guard back side of institute construction tunnel arch button is 0.5～0.7m, corresponding in step (b), splash guard herein is laid in along the tunnel cross-sectional direction and carries out the hoop laying, and the constant spacing of paving between the AB at the splash guard back side at institute all the other positions of construction tunnel button is 0.7～0.9m; Lap width between the geotextiles described in the step (a) is not less than 10cm;
Mode or a plurality of nailing that the button of AB described in the step (b) adopts nailing and metallic gasket to cooperate one by one cooperate the mode of a bulk metal press strip to fix, its nailing all arranges by blossom type and it is 20cm in the longitudinal pitch that AB buckles laying, and horizontal spacing is 10cm; The lap width of being laid between splash guard in the step (b) is 15cm, and the overlapping the slot of the geotextiles of the laying 50cm at least that to stagger in the overlapping the slot of described splash guard and the step (a), adopt two soldered overlap weldings to weld, its every the wide 1～1.5mm of soldered, article two, be provided with the wide cavity of a 20mm in the middle of the soldered, splash guard overlapping the slot and the constuction joint 1m at least that staggers, overlapping the slot of inverted arch hoop and the overlapping the slot of the arch wall hoop 1m at least that should stagger; After having welded, subsidize again in overlapping the slot place of described splash guard that one deck is wide to be the double-sided self-adhesive type splash guard bonding jumper of 35cm; The thickness of described M10 cement mortar protective course is 2～3mm.
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| CN2008100180009A CN101260809B (en) | 2008-04-18 | 2008-04-18 | Back surface stuck AB fastener self-adhering -type water-proof board construction process |
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| CN2008100180009A CN101260809B (en) | 2008-04-18 | 2008-04-18 | Back surface stuck AB fastener self-adhering -type water-proof board construction process |
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| CN103061780A (en) * | 2012-12-25 | 2013-04-24 | 上海隧道工程股份有限公司 | Operating tunnel structure reinforcement construction method through steel ring |
| CN104727351A (en) * | 2015-03-24 | 2015-06-24 | 上海市政工程设计研究总院（集团）有限公司 | Middle embedded type water stop belt and construction method thereof |
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| CN105298152A (en) * | 2015-09-12 | 2016-02-03 | 深圳市安星装饰设计工程有限公司 | Natural stone repairing method |
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| CN103061780A (en) * | 2012-12-25 | 2013-04-24 | 上海隧道工程股份有限公司 | Operating tunnel structure reinforcement construction method through steel ring |
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| CN105134251A (en) * | 2015-09-24 | 2015-12-09 | 中铁十七局集团第三工程有限公司 | Positioning rod for steel bar positioning and waterproof plate installation in tunnel secondary lining |
| CN105257320A (en) * | 2015-10-29 | 2016-01-20 | 袁顺利 | Tunnel waterproof structure and construction method |
| CN106089266A (en) * | 2016-08-23 | 2016-11-09 | 青岛城建集团有限公司 | Waterproof system and construction thereof at a kind of Varied section negative and positive angle, tunnel |
| CN108150202A (en) * | 2018-01-30 | 2018-06-12 | 中铁二十二局集团第工程有限公司 | Using the lining cutting waterproof/drainage structure of anti-viscous formula splash guard |
| CN109441491A (en) * | 2018-10-29 | 2019-03-08 | 中铁二局第工程有限公司 | A kind of railway tunnel self-adhesive waterproof material and its construction method |
| CN112277420A (en) * | 2019-11-11 | 2021-01-29 | 浙江百川新型建材有限公司 | Automatic compound equipment of waterproof cloth sticking cloth |
| CN112761678A (en) * | 2021-01-11 | 2021-05-07 | 中国水利水电第五工程局有限公司 | Construction method for laying waterproof board and installing secondary lining reinforcing steel bars by using trolley device |
| CN115977697A (en) * | 2022-09-19 | 2023-04-18 | 保利长大工程有限公司 | Tunnel positioning geotextile construction method |
| CN118167372A (en) * | 2024-05-14 | 2024-06-11 | 中铁十一局集团城市轨道工程有限公司 | Tunnel self-adhesive waterproof board and construction method thereof |
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