Static correction method for stone storage door

Abstract

According to the stone storage door static deviation rectifying method, a positioning assembly plate, a positioning rod and a connecting lug are included, the positioning assembly plate is connected with the positioning rod and used for being connected with an upper floor beam so that the upper floor beam can serve as a positioning foundation, and the positioning rod is connected with the connecting lug and used for positioning and fixing the connecting lug. The connecting lug is arranged on the lower supporting accessory so that the connecting lug can be opposite to the lower supporting accessory in position, and the connecting lug is used for positioning the lower supporting accessory. According to the stone storage door static correction method, assembly is convenient, positioning is accurate, installation work can be accurately and efficiently completed, working hours are saved, and meanwhile deviation caused by manual measurement and some possible risks are avoided.

Description

Technical Field

[0001] This invention relates to the field of building repair technology, and in particular to a static correction method for Shikumen (stone gate) structures. Background Technology

[0002] Ruihua Lane is located at the intersection of Huangpi South Road and Fuxing Middle Road in Huangpu District, bordered by Fuxing Middle Road to the north, Hefei Road to the south, and Huangpi South Road to the west. It was listed as a district-level cultural relic protection site by Luwan District during the Third National Cultural Relics Census. Built in the 1920s and 30s, Ruihua Lane features Shikumen architecture. The houses are roughly rectangular in shape and were originally used as residences, but are now vacant. Originally consisting of ten rows of lanes with a total of twenty buildings, the current renovation involves 18 three-story buildings (buildings 4 through 21), which are now being converted into educational auxiliary facilities.

[0003] Depending on the size of the building, the courtyard walls were equipped with 2 to 5 sets of shikumen (stone gates), with the shortest wall being 8 meters long and the longest reaching 19 meters. Traditional building correction techniques can be broadly categorized into five main types: forced descent method, jacking method, pre-installation method, lateral loading method, and comprehensive method.

[0004] In the practice of correcting wall misalignment in cultural heritage buildings, the jacking method is a commonly used technique. The core principle of this method is to lower the lower part and raise the higher part, that is, to construct a new load-bearing structure (such as a support beam, pile cap, or pile) below or to the side of the foundation that needs to be jacked, and to place jacks between the old and new structures to carry out the jacking operation.

[0005] The above methods have limitations when dealing with long walls, as they cannot achieve overall correction and are only applicable to a single courtyard wall containing a shikumen gate. When faced with long walls, it is necessary to cut the wall into sections and construct them in stages, which will cause significant damage to the protected historical buildings and contradicts the principle of minimal intervention in the construction of historical buildings. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a static correction method for Shikumen (stone gate) doors, which is easy to assemble and accurately positioned, and can complete the installation work accurately and efficiently, saving time. At the same time, it also avoids the deviation of manual measurement and some possible risks.

[0007] This invention provides a static correction method for Shikumen (stone gate) structures, comprising the following steps:

[0008] The tilt of the Shikumen gate was measured.

[0009] The wall containing the Shikumen gate was reinforced;

[0010] Excavation is carried out on one side of the wall and extends to the structural foundation of the wall, wherein the excavation location is opposite to the inclination direction of the wall;

[0011] The structural foundation at the excavation location is supported, and the support height is gradually reduced until it is gradually corrected under the action of static force.

[0012] In one embodiment, the reinforcement of the wall where the shikumen is located further includes:

[0013] A truss was erected at the location of the wall where the Shikumen (stone gate) was located;

[0014] The wall is excavated and cast to form a reinforcing member.

[0015] In one embodiment, the step of chiseling and casting on the wall to form a reinforcing member further includes:

[0016] Identify the areas to be reinforced on the wall;

[0017] The wall is chiseled to form grooves for the pilasters;

[0018] Reinforcing bars are laid and cast in the wall column groove and the top of the wall.

[0019] The wall column groove and the top of the wall are poured to form the buttress column and the top beam.

[0020] In one embodiment, the excavation is carried out on one side of the wall, extending to the structural foundation of the wall, wherein the excavation location is opposite to the inclination direction of the wall, and further includes:

[0021] Separate the wall from the adjacent walls on both sides;

[0022] Excavation is carried out on one side of the wall, extending to the structural foundation of the wall.

[0023] In one embodiment, the static correction method for Shikumen (stone gate) further includes:

[0024] Rebar is installed on both sides of the foundation to form the foundation reinforcement;

[0025] The foundation reinforcement on both sides is connected by stirrups;

[0026] The foundation reinforcement and the stirrups are poured.

[0027] The static correction method for Shikumen provided by this invention can achieve overall correction without the need for segmented construction, and reduces the stress applied to the wall, minimizing construction damage to the wall and effectively reducing construction costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 The flowchart shows the static correction method for Shikumen (stone gate) provided by the present invention.

[0030] Figure 2 A schematic diagram of the wall truss structure for the static correction method of Shikumen provided by the present invention.

[0031] Figure 3 A schematic diagram of the wall casting reinforcement component for the static correction method of Shikumen provided by the present invention.

[0032] Figure 4 A schematic diagram of the wall reinforcement structure for the static correction method of Shikumen provided by the present invention. Detailed Implementation

[0033] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0035] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0036] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar attributes, not to indicate or imply relative importance or a specific order.

[0037] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0038] Please see Figure 1 The static correction method for Shikumen gates provided by this invention includes the following steps:

[0039] S1, measure the tilt of the Shikumen gate.

[0040] It is understandable that the tilt of the Shikumen is caused by the tilt of the wall 1 on which it is located. The tilt of the Shikumen can be measured by equipment such as a laser vertical instrument.

[0041] Please see Figure 2 S2, reinforce the wall 1 where the Shikumen is located.

[0042] It is understood that the above steps may further include:

[0043] S201, Build truss 2 at the location of wall 1 where the Shikumen is located.

[0044] Understandably, the area around the two side walls 1 of the Shikumen (stone gate) is first cleared. The purpose of reinforcing wall 1 is to ensure that the wall itself is not damaged during the correction of the Shikumen and foundation construction. Scaffolding is erected on both sides of wall 1. Trusses 2 are set up on both sides of wall 1. Trusses 2 can be composed of I-beam uprights and channel steel crossbars. The I-beam uprights are assembled on the ground, and the gaps between the I-beam uprights / channel steel crossbars and wall 1 are filled with formwork timber. The spacing between the I-beam uprights can be about 1.5m. At the same time, 45-degree diagonal braces are set at each node to support the I-beam uprights or channel steel crossbars, ensuring the safety of subsequent foundation reinforcement construction.

[0045] S202, chisel and cast in wall 1 to form a reinforcing member.

[0046] It is understandable that the above steps may further include:

[0047] S202a, Confirm the reinforced area on wall 1.

[0048] It is known that the layout lines for the pilaster grooves and top beams can be marked on the wall.

[0049] S202b, A groove for the pilaster is cut into wall 1.

[0050] It is known that the dimensions of the pilaster groove that can be carved into the wall are 240*300mm.

[0051] S202c, reinforcement bars are laid and poured in the wall column groove and the top of the wall 1;

[0052] S202d, the pilaster groove and the top of the wall are poured to form the buttress 4 and the top beam 3.

[0053] like Figure 3 As shown, the process involves drilling and installing tie bars; laying pipelines, inserting tie bars, arranging column reinforcement, arranging top beam reinforcement, and binding; after acceptance, making formwork and pouring C30 concrete; and reinforcing and repairing buttress column 4 and top beam 3.

[0054] S3, excavation is carried out on one side of wall 1, and the excavation extends to the structural foundation 7 of wall 1. The excavation location is different from the tilt direction of wall 1.

[0055] It is understandable that the above steps may further include:

[0056] S301, separate wall 1 from the walls connected to its two sides.

[0057] It is known that when constructing scaffolding for correcting and fixing adjacent walls connected to wall 1, and anti-overturning scaffolding, the gap between them should be approximately 0.5-1cm. Sand and debris in the gap must be cleaned with wire or very thin bamboo strips, and there should be no debris that could affect the correction work of wall 1. The gap should be filled with a flexible material such as extruded polystyrene board.

[0058] S302, excavate one side of the wall and excavate to the structural foundation of the wall.

[0059] It is known that if wall 1 tilts to the left, excavation will be carried out on its right side, which is the difference mentioned in this embodiment. The excavation range is within 1.5m on one side of wall 1. The excavation depth extends to the bottom surface of the existing structural foundation 7. The earthwork excavation on both sides of wall 1 can be carried out manually. First, the surface hard paving is removed with a pickaxe. For old mortar layers that are difficult to break manually, holes are drilled first with an electric drill and then removed manually with a pickaxe. During the removal process, the existing wall 1 should be avoided.

[0060] S4. Support the structural foundation at the excavation location and gradually reduce the support height until it is gradually corrected under static force.

[0061] Understandably, the initial state could be that the support height is slightly lower than the structural foundation. Under the action of static force, wall 1 gradually approaches the support structure. When it comes into contact with the support structure, the height of the support structure is lowered, and so on, until wall 1 is upright.

[0062] like Figure 4 As shown in Figure S5, reinforcement bars are installed on both sides of the structural foundation 7 to form the foundation reinforcement 5.

[0063] The foundation reinforcement 5 on both sides is connected by stirrups 6;

[0064] Cast concrete at the locations of foundation reinforcement 5 and stirrups 6.

[0065] Please see Figure 3 It is understandable that the foundation reinforcement 5 can include an upper row of main bars and a lower row of main bars. The upper row of main bars consists of 5 20 steel bars, the lower row of main bars consists of 4 20 steel bars, the stirrups are 12@200, the height of the structural foundation 7 is 400mm, an additional tie bar is added to the exterior, and there is no tie bar inside.

[0066] Stirrups 6 and foundation reinforcement 5 are embedded in the wall 1 for ≥15d;

[0067] The holes for rebar installation are drilled using an electric drill with a diameter of 14@200. The angle between the hole diameter and the masonry is between 45° and 60°, and the hole diameter faces upward. After drilling, brick debris and brick dust need to be cleaned before rebar installation. Grouting material is used for rebar installation.

[0068] Rebar installation process

[0069] 1) Positioning and layout: Lay out the lines according to the location requirements in the drawings;

[0070] 2) Drill holes using an electric hammer or water drill according to the layout points and technical requirements. If you encounter stirrup 6, you need to move the hole and allow the stirrup to pass. Because the column head reinforcement is dense, the stirrup 6 must be removed before drilling to reduce damage to the reinforcement.

[0071] 3) Cleaning the hole: Blow out the ash and slag in the hole with an air pump, wipe the hole wall with cotton yarn dipped in acetone several times, dry it with an electric heating rod while it is wet, and then wipe the hole wall with cotton yarn dipped in acetone until it is clean.

[0072] 4) Treatment of stirrups 6 and foundation reinforcement 5: Grind the steel bars of stirrups 6 with an angle grinder. The length should be greater than the hole depth, and the ground part should reveal a metallic luster.

[0073] 5) Rebar installation: Use a special tool to slowly inject the rebar adhesive from the inside out, ensuring the hole is full of adhesive. Rotate the polished stirrup 6 into the bottom of the hole until adhesive overflows. If adhesive does not overflow, a second injection is required until adhesive overflows from the bottom of the hole, ensuring the adhesive is full. The rebar installation depth should not be less than 15d.

[0074] 6) Curing and maintenance: The adhesive should cure within 24 hours. Do not disturb the reinforcing steel during the curing period. It is recommended to proceed with the next process after 24 hours.

[0075] 7) To ensure the reliability of the interface connection between the foundation concrete and the structural foundation 7, a mixture of interface agent and cement mortar is applied to the brick wall before pouring the concrete. The interface agent can improve the adhesion of the wall surface and avoid the problem of weak adhesion between the foundation concrete and the structural foundation 7 due to the smoothness of the wall surface.

[0076] (4) Pour C35P6 concrete.

[0077] 1) Before pouring, mark the elevation control line on the column and set the elevation control point on the slab surface to ensure that the concrete elevation and surface flatness meet the specifications and technical requirements.

[0078] 2) When pouring concrete, pour the concrete according to the predetermined route. The concrete should be spread evenly. Control the pouring speed during the pouring process. Do not pour the concrete in a concentrated manner and do not pour it directly onto the reinforcing bars to avoid displacement or deformation of the reinforcing bars and profiled steel sheets due to impact.

[0079] 3) The foundation should be poured continuously and compacted carefully in strict accordance with the specifications to avoid honeycomb, pitting, and exposed reinforcement.

[0080] 4) When pouring concrete, the condition of the formwork, supports and reinforcing bars should be observed frequently, and any problems should be dealt with in a timely manner.

[0081] 5) The loose thickness of the concrete should be slightly greater than the thickness of the raft slab. Use a flat vibrator to vibrate back and forth perpendicular to the concrete pouring direction. After vibration, use a 3m screed to level it, and use a wooden trowel to level and compact it. The elevation of the slab surface should be checked with a string line to strictly control the flatness.

[0082] 6) Water curing should be carried out promptly after the concrete is poured, and the curing time shall not be less than 7 days.

[0083] After completing the above steps, once the concrete strength reaches the design value, the wall can be retested. Only after the retest is passed can backfilling be carried out. Backfilling should be done in two layers, with each layer not exceeding 300mm in thickness. The compaction degree of each layer of backfill should not be less than 0.94. To avoid disturbing the wall, manual compaction should be used. Finally, the erected truss 2 can be dismantled.

[0084] As can be seen from the above description, the static correction method for Shikumen provided by this invention can achieve overall correction without the need for segmented construction, and reduces the stress applied to the wall, minimizing construction damage to the wall and effectively reducing construction costs.

[0085] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A static correction method for Shikumen (stone-framed gate) structures, characterized in that, Includes the following steps: The tilt of the Shikumen gate was measured. The wall containing the Shikumen gate was reinforced; Excavation is carried out on one side of the wall and extends to the structural foundation of the wall, wherein the excavation location is opposite to the inclination direction of the wall; The structural foundation at the excavation location is supported, and the support height is gradually reduced until it is gradually corrected under the action of static force.

2. The static correction method for Shikumen gates as described in claim 1, characterized in that, The reinforcement of the wall where the shikumen is located further includes: A truss was erected at the location of the wall where the Shikumen (stone gate) was located; The wall is excavated and cast to form a reinforcing member.

3. The static correction method for Shikumen (stone gate) as described in claim 2, characterized in that, The step of chiseling and casting on the wall to form a reinforcing member further includes: Identify the areas to be reinforced on the wall; The wall is chiseled to form grooves for the pilasters; Reinforcing bars are laid and cast in the wall column groove and the top of the wall. The wall column groove and the top of the wall are poured to form the buttress column and the top beam.

4. The static correction method for Shikumen gates as described in claim 1, characterized in that, The excavation is carried out on one side of the wall, extending to the structural foundation of the wall, wherein the excavation location is opposite to the inclination direction of the wall, and further includes: Separate the wall from the adjacent walls on both sides; Excavation is carried out on one side of the wall, extending to the structural foundation of the wall.

5. The static correction method for Shikumen gates as described in claim 1, characterized in that, The static correction method for Shikumen gates also includes: Rebar is installed on both sides of the foundation to form the foundation reinforcement; The foundation reinforcement on both sides is connected by stirrups; The foundation reinforcement and the stirrups are poured.

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