CN100343462C - Tension reset method for twisted and tilted loft type wood tower - Google Patents
Tension reset method for twisted and tilted loft type wood tower Download PDFInfo
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- CN100343462C CN100343462C CNB2005100953588A CN200510095358A CN100343462C CN 100343462 C CN100343462 C CN 100343462C CN B2005100953588 A CNB2005100953588 A CN B2005100953588A CN 200510095358 A CN200510095358 A CN 200510095358A CN 100343462 C CN100343462 C CN 100343462C
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Abstract
The present invention relates to a restoring technical method to a wood structural pavilion-type tower. The present invention exerts reset couple in opposite direction to that of twisted deformation on a twisted tower body, after the tower body is restored to the preset position, the inner part of the tower body is provided with a shaping and reforcing body, and then the couple is removed. The present invention can use a construction bracket for repairing a wood tower as a working platform, and can carry out reset and reinforcement without falling the bracket to the structure generating twisted deformation predominatingly and result in inclination through external stretching and internal supporting. The present invention has the characteristics of high safety and reliability, convenience, feasibility, economy and reasonability. Firstly, the present invention adopts pulling force to directly pull a twisted tower layer in opposite direction, which has the advantages of simple operation and easy control; compared with the traditional thruster, a horizontal back force rack with larger rigidity does not need to arrange, and the distance between a loading platform and the tower body is free from the limit of the length of the thruster, which is easy to arrange and adjust. Secondly, the construction bracket is fully utilized as the loading working platform, and thus, the cost and installation time for specially installing a loading structure can be saved.
Description
Technical field
The present invention relates to recovery technique method to wooden structure loft-style tower.
Background technology
Wood pagoda is under long-term wind action, and when particularly standing geological process, structure easily deforms, and the principal character of this distortion is torsional deformation in the plane and vertical inclination and distortion.After in a single day housing structure is distorted and tilts, make wooden construction produce out of joint, pressurized one side and produce splitting or deflection, and make sets of brackets on top of the columns loosening in tension one side.Along with the long term and the material ageing of environmental load, the intensity of member descends, rigidity is degenerated, and causes the distortion of structure and the progressively aggravation of tilting.The Ying County Shaka Pagoda that China is famous is typical pavilion-like wood pagoda, go through more than 900 year vicissitudes after, whole tilt to the north by east, second and third course northeastward horizontal torsion, the relative bottom total drift in top 445mm, wooden construction damage, come off serious.At present, the situation of this tower still continuing deterioration, is demanded strengthening by reparative method urgently.
Ancient tower belongs to precious cultural heritage, and its strengthening by reparative method work need be followed the historical relic's protection principle, and will guarantee to be perfectly safe.For preserving its historical information, general requirements adopts the whole repair mode of " frame does not fall ".Tall and big, the complex structure of the pavilion-like wood pagoda bodily form carries out " frame does not fall " integral error correcting and position to it and reinforces, and difficulty of construction is big, technical requirements is high.
Summary of the invention
The purpose of this invention is to provide a kind of tension reset method that historical relic's protection " restoring the old as the old " and structural strengthening " safe and reasonable " require, distortion is turned round, inclined to practical pavilion-like wood pagoda of taking into account.
The present invention's technical scheme is: the distortion tower body is applied the reset couple opposite with the torsional deformation direction, after tower body returned to the precalculated position, in tower body inside typing is set and adds solid, remove couple then, characteristics are: the construction bracket that utilizes the wood pagoda repairerment is as working platform, be aided with steel bracing frame between height adjustable temporary layer, adopt tensioner that the distortion tower body is applied the couple that resets.
The present invention can utilize construction bracket that wood pagoda repairs as working platform, is the structure of leading and causing tilting to producing torsional deformation, carries out " frame does not fall " by the mode of outside stretch-draw, inner support and resets and reinforce.Characteristics are safe and reliable, simple and feasible, economical rationality.At first, adopt pulling force directly will twist tower course rightabout and just draw, easy and simple to handle, be easy to control; Compare with traditional thrustor, do not need the bigger horizontal reacting force frame of rigidity, and the distance between weighted platform and the tower body is not subjected to the restriction of thrustor length, easy arrangement and adjustment.Secondly, make full use of construction bracket, can save the expense and the installation period of ad hoc loading structure as loading working platform.
When the few wood pagoda of the distortion number of plies is resetted reinforcing, under the situation of loading equipemtn and conditions permit, can once construct simultaneously to each layer.
When the distortion number of plies is more, for reducing total tricks of loading equipemtn and interlayer steel bracing frame, improve utilization rate of equipment and installations, should successively construct by top-down order.
The concrete steps of constructing that reset are:
1) reset below the crossbeam of wood pagoda floor of couple, between adjacent two bearing columns the steel bracing frame be set desiring to apply, described steel bracing frame is made up of the horizontal support body and the vertical support body that be arranged in parallel with crossbeam;
2) in the construction bracket of repairing wood pagoda, working platform is set, and the working platform position is reinforced;
3) between end node and the working platform tensioner is being set on every edge column of loading layer;
4) by tensioner the distortion tower body is applied the couple that resets, make it return to the precalculated position;
5) in the floor after resetting timber wedge is set and support member positions tower body;
6) remove tensioner, steel bracing frame, working platform.
In addition, the vertical support body lower end of the steel bracing frame in step 1) is provided with arrangement for adjusting height respectively.Not influencing under the prerequisite that floor distortion recovers, reliable assurance can be provided for the construction safety of tower body, and can be and change, repair the floor member that has damaged and provide support power.Above-mentioned arrangement for adjusting height is hydraulic jack or regulates bolt.
Above-mentioned steps 1) between steel bracing frame and tower layer crossbeam, soft bed course is set in,, also can the safety of ancient tower be provided safeguard simultaneously to avoid hindering the horizontal movement of superstructure when tension reset is constructed.
Above-mentioned steps 3) tensioner comprises steel wire cable, ess-strain controller, flower basket bolt securing member in, and fixing steel wire cable respectively on working platform and loading layer connects ess-strain controller and flower basket bolt securing member between two groups of steel wire cables.
Consider the elastic deformation of unloading back wooden construction, can not reach the recovery value of design, be loaded on the distortion recovery value and reach 105% o'clock of target recovery value, keep load, adopt timber wedge and support the body of the tower associated components is positioned for preventing the tower layer behind the removal pulling force.
Description of drawings
Fig. 1 is that wood pagoda facade of the present invention and construction bracket are arranged total figure.
Fig. 2 is the plan view of wood pagoda.
Fig. 3 is the installation and the couple schematic diagram that resets of tensioner.
Fig. 4 is the structural representation of steel bracing frame.
Specific embodiment
Specific design and construction sequence for octagonal wood pagoda are as follows:
(1) tower body detects and the strengthening member design: measure the torsional deflection value and the vertical deviant of floor, measure the dislocation and the deformation values of each member; The damage location of detection means and degree of injury are drafted the repairerment of damaged component and reinforce requiring (to damaging more serious member, should reinforcing or replace, to guarantee the safety in the construction) before tension reset; Determine that floor adopts timber wedge is fastening and support is located node and position when tension reset.
(2) loading scheme design: draft the target recovery value of floor tension reset, calculate total stretching force and Deformation control value, determine tensioner quantity and arrangement according to the design scheme that multilayer is constructed simultaneously or successively constructed; According to total stretching force and Deformation control value design hierarchical loading system.
(3) erection construction support is to the operation platform reinforcing design: in the construction bracket of repairing 1 working platform 2 is set, and according to the requirement that tensioner quantity, arrangement and pulling force are regulated the working platform position is reinforced, cable rope 3 is set in case of necessity.Working platform 2 should be convenient to technician's tension operation and measure observation.As shown in Figure 1, 2.
(4) the interlayer temporary steel support is set up meter: every group of steel bracing frame 4 is made up of horizontal support body 4-1 and two vertical support body 4-2 of be arrangeding in parallel with crossbeam 5, connect hydraulic jack in the lower end of each vertical support body 4-2 respectively or regulate bolt 4-3, form Height Adjustable temporary steel support frame.As shown in Figure 4.
(5) install and debug steel bracing frame between temporary layer: between every group of steel support 4 and crossbeam 5, soft bed course 6 is set, as shown in Figure 4.Be symmetrical arranged four groups of steel bracing frames 4 altogether at same contorted strata, every group of steel bracing frame 4 is installed in respectively between adjacent two bearing columns 7, as shown in Figure 2.
(6) installation and debugging charger and Measurement and Control System: in this example, adopt two pairs of couples that reset at same contorted strata, four limits promptly selecting the tower body symmetry load the last end node place that the position is located at every edge column 7 as loading zone, and adopt steel clamping plate 8 to reinforce temporarily; Apply Horizontal Tension N by the charger that is connected on the construction bracket, form the couple that resets.
Every group of tensioner 9 is made up of steel wire cable, an ess-strain controller, a flower basket bolt securing member; The end of wire rope 9-1 is connected on the steel clamping plate 8 at last end node place of column 7, the other end links to each other with ess-strain controller 9-2, the other end of ess-strain controller 9-2 links to each other with flower basket bolt securing member 9-3, and the other end of flower basket bolt securing member 9-3 is connected with steel wire cable 9-4 on being fixed on working platform 2.As shown in Figure 3.
(7) reliability of inspection whole construction support, loading system and interlayer steel support system.
(8) press loading scheme classification load application, note observation tower body and deformation of members situation, the deformation tendency that will note observing damaged component and node especially while loading.
(9) strengthen stretching force gradually, be loaded on the distortion recovery value and reach 105% o'clock of target recovery value, keep load, adopt timber wedge and support tower body inside associated components is positioned.
(10) finish member location after, shed external force gradually.Note observing while unloading, the discovery situation should take appropriate measures.After unloading finishes, measure and the anti-back twist stability of check tower body.If tower body back twist value less than 10% of target recovery value, can be thought to reach the requirement that resets; Otherwise, should apply stretching force, further fastening timber wedge once more and strengthen support, until reaching the requirement that resets.
(11) turn round turning over position work and finish after, the node area and the damage member of wooden construction carried out strengthening by reparative method.The emphasis of damaged strengthening member is splitting position, end, can adopt the ground polymers fibre reinforced composites (Geopolymer-based FRP) of aging-resistant flame-proof better performances to twine hoop or impregnation process.If must change the member of damage or when node area reinforced in a big way, should utilize interlayer steel bracing frame to hold out against the force part, repair process safe to guarantee structure.
(12) remove interlayer steel bracing frame, remove tensioner, working platform.
(13) the fixed observer point is set in the tower body relevant position, the tracking observation with consolidation effect of resetting, is observed three times every year at least 2 years duration.
Claims (6)
1, the pavilion-like wood pagoda tension reset method of distortion of turning round, incline applies the reset couple opposite with the torsional deformation direction to the distortion tower body, tower body is returned to the precalculated position after, typing is set in tower body inside adds solid, remove couple then; The construction bracket that it is characterized in that utilizing the wood pagoda repairerment is aided with steel bracing frame between height adjustable temporary layer as working platform, adopts tensioner that the distortion tower body is applied the couple that resets.
2, the tension reset method of turning round, inclining and be out of shape according to the described pavilion-like wood pagoda of claim 1, the concrete steps of constructing that it is characterized in that resetting are:
1) reset below the crossbeam of wood pagoda floor of couple, between adjacent two bearing columns the steel bracing frame be set desiring to apply, described steel bracing frame is made up of the horizontal support body and the vertical support body that be arranged in parallel with crossbeam;
2) in the construction bracket of repairing wood pagoda, working platform is set, and the working platform position is reinforced;
3) between end node and the working platform tensioner is being set on every edge column of loading layer;
4) by tensioner the distortion tower body is applied the couple that resets, make it return to the precalculated position;
5) in the floor after resetting timber wedge is set and support member positions tower body;
6) remove tensioner, steel bracing frame, working platform.
3, the tension reset method of turning round, inclining and be out of shape according to the described pavilion-like wood pagoda of claim 2 is characterized in that the vertical support body lower end of the steel bracing frame in the step 1) is provided with arrangement for adjusting height respectively, and described arrangement for adjusting height is hydraulic jack or regulates bolt.
4, the tension reset method of turning round, inclining and be out of shape according to the described pavilion-like wood pagoda of claim 2 is characterized in that in the step 1), between steel bracing frame and tower layer crossbeam soft bed course is set.
5, the tension reset method of turning round, inclining and be out of shape according to the described pavilion-like wood pagoda of claim 2, it is characterized in that tensioner described in the step 3) comprises steel wire cable, ess-strain controller, flower basket bolt securing member, on working platform and loading layer, fix one group of steel wire cable respectively, between two groups of steel wire cables, connect ess-strain controller and flower basket bolt securing member.
6, according to the described pavilion-like wood pagoda of claim 1 turn round, the incline tension reset method of distortion, it is characterized in that being loaded on the distortion recovery value and reach 105% o'clock of target recovery value, keep load, adopt timber wedge and support the body of the tower associated components is positioned; After finishing the member location, shed external force gradually, measure and the anti-back twist stability of check tower body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100953588A CN100343462C (en) | 2005-11-08 | 2005-11-08 | Tension reset method for twisted and tilted loft type wood tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100953588A CN100343462C (en) | 2005-11-08 | 2005-11-08 | Tension reset method for twisted and tilted loft type wood tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1769630A CN1769630A (en) | 2006-05-10 |
| CN100343462C true CN100343462C (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100953588A Expired - Fee Related CN100343462C (en) | 2005-11-08 | 2005-11-08 | Tension reset method for twisted and tilted loft type wood tower |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291083A (en) * | 2012-03-03 | 2013-09-11 | 兰州理工大学 | Repair method for old wooden tower |
| CN103850445B (en) * | 2014-03-12 | 2015-11-25 | 扬州大学 | The distortion reset reinforcement means of loft-style timber-framed building |
| CN104234445B (en) * | 2014-09-25 | 2016-04-27 | 扬州大学 | Reset-security the multiple bay of distortion timber-framed building |
| CN110158988A (en) * | 2019-06-28 | 2019-08-23 | 中冶建工集团有限公司 | A kind of building protection steel structure support and its quick method for dismounting |
| CN111236311B (en) * | 2020-03-06 | 2024-04-09 | 华东建筑设计研究院有限公司 | Construction platform and construction method for developing underground space of dense existing building group |
| CN112144903B (en) * | 2020-08-07 | 2021-11-23 | 北京国文琰园林古建筑工程有限公司 | Correction method for displaced members of mountain surface golden columns and eaves columns integrally |
| CN113802593A (en) * | 2021-09-28 | 2021-12-17 | 中国建筑第五工程局有限公司 | Assembly type KSC plate brick moulding bed reinforcing system |
| CN114658248B (en) * | 2022-02-25 | 2024-02-02 | 兰州理工大学 | Method for correcting inclination of local layer of mortise and tenon double-cylinder tower structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058250A (en) * | 1991-07-06 | 1992-01-29 | 朱友山 | Method of strengthening ancient buildings with pcestressed built-in rib reinfocement |
-
2005
- 2005-11-08 CN CNB2005100953588A patent/CN100343462C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058250A (en) * | 1991-07-06 | 1992-01-29 | 朱友山 | Method of strengthening ancient buildings with pcestressed built-in rib reinfocement |
Non-Patent Citations (3)
| Title |
|---|
| 应县木塔维修加固的历史经验 孟繁兴，张畅耕，古建园林技术，第4期 2001 * |
| 文物古建筑的保护与维修 杨中智，四川建筑，第15卷第1期 1995 * |
| 百年木构换新颜──四川南充奎阁修复记 杨中智，古建园林技术，第4期 1995 * |
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Granted publication date: 20071017 Termination date: 20101108 |