Summary of the invention
Goal of the invention of the present invention is: the problem to above-mentioned existence, provide a kind of easy and simple to handle, and be easy to promote; Can guarantee the Linear Control technology of bridge construction, be specially adapted to the Linear Control of Landscape Bridge Bridge Pier Construction, and through this control method; Can guarantee the stressed of bridge; Can guarantee its outward appearance again, this control method is workable, is fit to apply.
The technical scheme that the present invention adopts is following:
Landscape Bridge Bridge Pier Construction linear control method of the present invention, realize through following steps:
Step 1 is set up support: after bracket basis construction is accomplished, set up support again after the basis measured absolute altitude, and check adjustment;
Step 2 is measured unwrapping wire: after 1. support is set up predetermined altitude, support top mark height is measured; And set up the lumps of wood; 2. in the precompressed process, the precompressed section is carried out cross-sectioning, and keep a record; 3. based on the precompressed result; Reserve the rack elasticity deflection, absolute altitude at the bottom of the template is measured, and adjusted; The template of drawing is arranged grid, is that the center symmetry is laid with the axis;
Step 3, template is installed: is that middle alignment bilateral symmetry is laid template 1., 2. piece handled, 3. the bed die absolute altitude is carried out setting-out, and adjust, 4. template surface is handled with the bridge axis, and the brushing release agent;
Step 4, concrete construction: by building toward both sides in the middle of the bridge pier;
Step 5, form removable: 1. stripping, and the bridge pier outline line is carried out bound edge handle.
Since adopted said method, on-the-spot workable, very easily in popularization, guaranteed the linear control of bridge construction; Successively through setting up support, and detect repeatedly and proofread and correct, guarantee that follow-up template mounting structure surely leans on, and guarantees its supporting role; Measure unwrapping wire after this, and divide grid, carry out the installation of template again on this basis, after the template installation; Mix the construction of earth again, owing to before the installation of template, carried out dividing and line, thereby form cell block, therefore in mounting template; Only need handle well, promptly can guarantee to reach requirement after template is installed, when mixing the building of earth, need build from past both sides in the middle of the bridge pier in the template at each cell block place; Make the position, intermediate portion form the load main body, sustain the power of both sides, guarantee the safety of construction, and in the installation process of template; Need handle the leakage when avoiding follow-up mixed earth to build, stripping more at last to the slit between the template; And the bridge pier outline line is carried out bound edge handle, thereby guarantee that Landscape Bridge Bridge Pier Construction linearity reaches construction requirement, can guarantee the stressed of bridge simultaneously; Can guarantee its outward appearance again, this control method is workable, is fit to apply.
Landscape Bridge Bridge Pier Construction linear control method of the present invention in the step 1, is specially: 1. after the bracket basis construction is accomplished, by the measurement group unwrapping wire is measured on the basis, bridge pier outline line and bracket basis absolute altitude draw; 2. according to outline line the bridge pier support is distributed, and calculate every row's support need scaffolding height; 3. measure after support is set up and put in place and check, not meeting position adjustment; 4. support height is checked and is required the back that support is carried out precompressed.
Since adopted said method, draw bridge pier outline line and bracket basis absolute altitude, so that follow-up construction, and piecemeal; Calculate every row's support and need scaffolding height,, make that operation is very easy so that set up support; Measure after support is set up and put in place and check, to not meeting position adjustment, thereby satisfy stressed requirement; Guarantee normally carrying out of construction; Support height is checked and is required the back that support is carried out precompressed, and precompressed adopts water bag dress water to carry out, and makes that its precompressed operation is very easy; Be beneficial to and apply, can guarantee construction Linear Control simultaneously the Landscape Bridge bridge pier.
Landscape Bridge Bridge Pier Construction linear control method of the present invention in the step 2, is specially: 1. encrypt traverse station and fourth class bench mark in the other one-level of laying of Landscape Bridge; Bridge pier line style and absolute altitude are controlled; Before support was set up, the grid in the concrete base surface is made bridge pier sideline scope was measured absolute altitude; According to each point absolute altitude in the grid, carry out support and set up; 2. after support is set up predetermined altitude, support top mark height is measured, set up the lumps of wood after meeting the requirements; 3. in the precompressed process, divide every day and three times the precompressed section carried out cross-sectioning, and survey data is carried out record; 4. before template is installed, according to the precompressed result, reserving the rack elasticity deflection, absolute altitude at the bottom of the template is measured, and absolute altitude is accurately adjusted and the template of drawing is arranged grid through jacking, is that the center symmetry is laid with the axis.
Owing to adopted said method, before support was set up, the grid in the concrete base surface is made bridge pier sideline scope was measured absolute altitude; According to each point absolute altitude in the grid, carry out support and set up, after support is set up predetermined altitude, support top mark height is measured; Basically can carry out the lumps of wood after meeting the requirements and set up, before template is installed, according to the precompressed result; Reserve the rack elasticity deflection, absolute altitude at the bottom of the template is measured, and absolute altitude is accurately adjusted through jacking.The technical cadre is through measurement result, and the template of drawing is arranged grid, is that the center symmetry is laid with the axis.Therefore Landscape Bridge Bridge Pier Construction linear control method of the present invention can be controlled the linearity construction of Landscape Bridge bridge pier, guaranteeing the linear requirement of bridge pier, thereby satisfies construction requirement, and its easy construction, is easy to apply.
Landscape Bridge Bridge Pier Construction linear control method of the present invention in the step 3, is specially: 1. the template laying laterally is symmetrical centre with the bridge axes, is the symmetrical centre symmetrical laying with the pier stud center line vertically, and the bottom template is consistent with sidepiece template piece line; 2. before the formwork erection, remove the impurity of template surface earlier, and wipe dust, again with the joint treatment brushing release agent immediately that finishes; 3. be middle alignment bilateral symmetry shop template with the bridge axis, when the plate seam surpasses 1mm, handle with electric planer, and check whether each piece all drops on the flitch,, then adjust, guarantee that template is in one side if do not drop on the flitch; 4. post double faced adhesive tape earlier at each road edge joint position, carry out assembly unit again, scrape the wide ash of 20mm, make the faulting of slab ends of template piece and two template jointing positions form level and smooth slope, tie again, wear smooth being not easy to the edge joint position that double faced adhesive tape handles; 5. need connect when high when template, piece is located at same curve location; 6. after the bed die installation, the bed die absolute altitude is carried out setting-out, undesirable position is adjusted.
Owing to adopted said method, the quality of template is very big to final clear-water concrete influential effect, should guarantee that the concrete presentation quality guarantees that again bridge pier is linear, the quality of necessary strict control template engineering; Its template quality requires to satisfying intensity, rigidity requirement, dense materials, not imbibition; Do not receive variations in temperature buckling deformation etc.,, build attractive in appearance after the completion in order to guarantee concrete so this bridge abutment moulding plate is selected Finland's plate for use; It laterally is symmetrical centre with the bridge axes that template is laid, and is the symmetrical centre symmetrical laying with the pier stud center line vertically, and bed die is consistent with side form piece line; Improving the presentation quality after bridge pier is built completion, template need connect when high, and piece is located at same curve location; Can improve the presentation quality of finished product, avoid the fissure of displacement and seem in disorder, after the template surface clean; With the joint treatment brushing release agent immediately that finishes, release agent should be selected white aqueous solvent release agent for use, and its feature is air-dry easily at short notice.Because of template has local small concavo-convex unavoidably; If select machine oil or other water-insoluble release agents for use; It is difficult for air-dry at short notice, and under the effect of surface tension of liquid, the oils release agent is promptly concentrated to recess; Make that the release agent of brushing is inhomogeneous, the even phenomenon of irregular colour will appear in concrete surface after form removal.Therefore Landscape Bridge Bridge Pier Construction linear control method of the present invention is easy and simple to handle, is easy to promote; Can guarantee bridge construction; Be specially adapted to the Linear Control of Landscape Bridge Bridge Pier Construction, and can guarantee the stressed of bridge, can guarantee its outward appearance again; This control method is workable, is fit to apply.
In sum, owing to adopted technique scheme, the invention has the beneficial effects as follows:
1, Landscape Bridge Bridge Pier Construction linear control method of the present invention is easy and simple to handle, is easy to promote, and can guarantee bridge construction;
2, Landscape Bridge Bridge Pier Construction linear control method of the present invention is specially adapted to the Linear Control of Landscape Bridge Bridge Pier Construction, and can guarantees the stressed of bridge, can guarantee its outward appearance again, and this control method is workable, is fit to apply.
The specific embodiment
Disclosed all characteristics in this manual, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this manual (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
Shown in Fig. 1, in the present invention, the installation procedure of template, 1. and 2. each operation interpellation wherein as shown in the figure is following: snap the line makes template along bridge axis symmetry shop, can make each plate seam that concrete surface leaves all with the bridge parallel axes, neat and attractive in appearance.3. if the plate seam is too big, then the plate seam is too obvious, influences attractive in appearance.4. prevent the probe plate, cause institute's moulding concrete surface of building to produce the faulting of slab ends phenomenon.5. prevent plate seam place spillage.6. prevent the faulting of slab ends phenomenon.7. guarantee the nail nail that do not fall through.8., 9. with 10. in case stay hole for nailing on the concrete surface.
Landscape Bridge Bridge Pier Construction linear control method of the present invention, realize through following steps:
Step 1 is set up support: after bracket basis construction is accomplished, set up support again after the basis measured absolute altitude, and check adjustment; Be specially: 1. after the bracket basis construction is accomplished, by the measurement group unwrapping wire is measured on the basis, bridge pier outline line and bracket basis absolute altitude draw; 2. according to outline line the bridge pier support is distributed, and calculate every row's support need scaffolding height; 3. measure after support is set up and put in place and check, not meeting position adjustment; 4. support height is checked and is required the back that support is carried out precompressed.
Step 2 is measured unwrapping wire: after 1. support is set up predetermined altitude, support top mark height is measured; And set up the lumps of wood; 2. in the precompressed process, the precompressed section is carried out cross-sectioning, and keep a record; 3. based on the precompressed result; Reserve the rack elasticity deflection, absolute altitude at the bottom of the template is measured, and adjusted; The template of drawing is arranged grid, is that the center symmetry is laid with the axis; Be specially: 1. encrypt traverse point and fourth class bench mark, bridge pier line style and absolute altitude are controlled, before support is set up in the other one-level of laying of Landscape Bridge; Grid in the concrete base surface is made bridge pier sideline scope; Measure absolute altitude,, carry out support and set up based on each point absolute altitude in the grid; 2. after support is set up predetermined altitude, support top mark height is measured, set up the lumps of wood after meeting the requirements; 3. in the precompressed process, divide every day and three times the precompressed section carried out cross-sectioning, and measurement data is carried out record; 4. before template is installed, based on the precompressed result, reserving the rack elasticity deflection, absolute altitude at the bottom of the template is measured, and absolute altitude is accurately adjusted and the template of drawing is arranged grid through jacking, is that the center symmetry is laid with the axis.
Step 3, template is installed: is that middle alignment bilateral symmetry is laid template 1., 2. piece handled, 3. the bed die absolute altitude is carried out setting-out, and adjust, 4. template surface is handled with the bridge axis, and the brushing release agent; Be specially: 1. the template laying laterally is symmetrical centre with the bridge axes, is the symmetrical centre symmetrical laying with the pier stud center line vertically, and the bottom template is consistent with sidepiece template piece line; 2. before the formwork erection, remove the impurity of template surface earlier, and wipe dust, again with the joint treatment brushing release agent immediately that finishes; 3. be middle alignment bilateral symmetry shop template with the bridge axis, when the plate seam surpasses 1mm, handle with electric planer, and check whether each piece all drops on the flitch,, then adjust, guarantee that template is in one side if do not drop on the flitch; 4. post double faced adhesive tape earlier at each road edge joint position, carry out assembly unit again, scrape the wide ash of 20mm, make the faulting of slab ends of template piece and two template jointing positions form level and smooth slope, tie again, wear smooth being not easy to the edge joint position that double faced adhesive tape handles; 5. need connect when high when template, piece is located at same curve location; 6. after the bed die installation, the bed die absolute altitude is carried out setting-out, undesirable position is adjusted
Step 4, concrete construction: casting method: concrete adopts commercial concrete.Concrete is pumped to the job site with concrete placement vehicle and builds, and pump truck is put in the middle of bridge pier.Symmetry is built when building, by building toward both sides in the middle of the bridge pier.Build and send the special messenger that support and template are checked in the process.
Step 5, form removable: 1. stripping, and the bridge pier outline line is carried out bound edge handle.Form removal is careful; Avoid destroying concrete, and note finished product protection, finished product protection mainly is the protection to the negative and positive angle; Directly influence the presentation quality of finished product during formwork hoisting; To pay attention to especially removing stage makeup and costume of template construction, must have the Security Officer on duty when template is removed stage makeup and costume, and tell somebody what one's real intentions are in detail what teams and groups carried out that i iron removes stage makeup and costume.After the template dismounting is accomplished, adopt the plank bound edge to handle to the bridge pier outline line, prevent the bridge pier outline line is damaged.
Step 6, concrete curing: after form removal is accomplished, adopt plastic sheeting to carry out covering curing.
Step 7; Become flat protection: finished product protection mainly is the protection to the negative and positive angle, directly influences the presentation quality of finished product during formwork hoisting, will pay attention to especially removing stage makeup and costume of template construction; Must there be the Security Officer on duty when template is removed stage makeup and costume, and tells somebody what one's real intentions are in detail what teams and groups carried out that i iron removes stage makeup and costume.After the template dismounting is accomplished, adopt the plank bound edge to handle to the bridge pier outline line, prevent the bridge pier outline line is damaged.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.