ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT COMPANY (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Liu, Qiaoling
Li, Shuming
Abrégé
Disclosed are a beam-column connection joint in an inorganic adhesive composite bamboo-wood structure, and a framework structure and a method. The connection joint comprises a connection joint between columns, a connection joint between a column and a beam, and a connection joint between beams. The connection joint between columns comprises a first steel sleeve disposed in a first column, wherein a connection steel bar is welded to a side face of the first steel sleeve, and the connection steel bar extends into a second column. The connection joint between a column and a beam comprises a second steel sleeve and a third steel sleeve, which are disposed in the column, wherein connection steel bars are welded to side faces of both the second steel sleeve and the third steel sleeve. When the connection steel bar located above extends to a lower end face of the beam, same is bent and inserted into the beam; and when the connection steel bar located below extends to an upper end face of the beam, same is bent and inserted into the beam. The connection joint between beams is located in the span of the beams. By means of the connection joint, an anchoring connection between beam and column joints is achieved by using a small number of steel bars, and the defect of a bamboo-wood material being not suitable for bending is overcome.
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT COMPANY (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Abrégé
Disclosed in the present invention is a frame structure building rectification method using pile foundation support. The technical solution comprises: excavating a working pit to expose independent foundations below frame columns; measuring a base elevation of each independent foundation, and finding the independent foundation at the lowest position, and using the independent foundation as a reference independent foundation; forming pile holes, on an independent foundation to be subjected to forced settlement, at positions located on both sides of the frame column, and constructing pile foundations at the positions of the pile holes; providing cantilever beams at positions on side surfaces of the frame column corresponding to the above of the pile foundations; excavating earthwork below the independent foundation to be subjected to forced settlement, until the bottom surfaces of the cantilever beams coincide with the top surfaces of the pile foundations; performing high-pressure grouting on earthwork below the independent foundation subjected to forced settlement; and then backfilling the working pit and restoring the ground. According to the present invention, for different degrees of settlement of the frame columns, rectification is achieved by using the pile foundation support, and for buildings of which seismic performance does not meet specification requirements, seismic isolation bearings can be mounted while performing rectification using forced settlement.
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT COMPANY (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Fan, Xisen
Cui, Guanke
Abrégé
The present invention relates to the field of building rectification, and provides a framed structure building rectification method based on a spatial curved surface trajectory, comprising: excavating a ring-shaped working pit around a building, the shape of a side slope of the working pit being a spatial curved surface structure corresponding to a part of the inner surface of a sphere, and enabling an independent foundation of the building to be completely exposed and within a range of the working pit; and laying a rotation displacement track on the side slope of the working pit corresponding to the spatial curved surface structure. For an overall inclination that may occur in any direction of the building, rectification is achieved by means of rotation and displacement of a curved track in three-dimensional space, thereby overcoming the current limitation of the current two-dimensional path rectification that it is difficult to perform rectification for inconsistency between an inclination direction and a main axis layout direction; moreover, a self-recovery structure that can achieve seismic isolation for an earthquake action force in any direction can be formed after the rectification.
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT COMPANY (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Li, Ying
Zhao, Qingrui
Abrégé
Provided is a method for inclination rectification of a building of a brick-concrete structure by means of spatial curved surface rotational displacement, which relates to the field of inclination rectification for buildings. In the method, an annular working pit is excavated around a building, with a side slope of the working pit being of a spatial curved surface structure corresponding to an inner surface of a spherical portion, and a strip foundation of a brick-concrete building being completely exposed and all within the range of the working pit; and a rotational displacement track is laid on the side slope of the working pit corresponding to the spatial curved surface structure thereof. For overall inclination which may be generated in any direction of a building, inclination rectification is realized by means of rotational displacement using a three-dimensional spatial curved surface track, so as to overcome the limitation at present of inconsistency between an inclination direction and a main axis arrangement direction during inclination rectification by two-dimensional path inclination rectification; and after the inclination rectification, a self-recovery structure is formed that can achieve seismic isolation of a seismic acting force in any direction.
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT COMPANY (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Abrégé
A method for inclination rectification by rotational displacement of a building underpinning foundation, relating to the field of inclination rectification for buildings. The method comprises: excavating an annular working pit around a building; establishing a track foundation having a spatial curved surface, and laying a displacement track; arranging underpinning beams for the inclined building so as to construct an underpinning foundation; and disconnecting independent footings (4) and frame columns (5), and then driving rotational displacement of the building along the displacement track by means of the underpinning foundation so as to achieve effective inclination rectification in a three-dimensional spatial trajectory. For the overall inclination of a building which may be generated in any direction, inclination rectification is achieved by means of rotational displacement along a three-dimensional spatial curved surface track, so as to overcome the limitation at present of it being difficult to carry out inclination rectification on an inclination direction and a main axis arrangement direction by means of two-dimensional path inclination rectification; and after the inclination rectification, a self-recovery structure that can carry out seismic isolation on a seismic acting force in any direction can be formed.
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT COMPANY (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Abrégé
Disclosed are a microbial grouting anchoring method for intracavity grouting and an anchoring structure. The method comprises the following steps: drilling a hole in an anchoring base body; arranging a plurality of groups of grouting pipes in a cavity of a hollow anchoring rod, enabling part of the groups of grouting pipes to extend to the bottom of the cavity, enabling part of the groups of grouting pipes to extend out of the hollow anchoring rod from a side hole in the middle of the hollow anchoring rod, and then inserting the hollow anchoring rod into the drilled hole; or installing the hollow anchoring rod in the drilled hole, arranging two partition plates in the cavity of the hollow anchoring rod in the axial direction in a crossed manner so as to divide the cavity into a plurality of pipelines for grouting, arranging a transverse partition plate in the middle in the cavity in the radial direction to block part of the pipelines, and enabling the hollow anchoring rod to be provided with a side hole in communication with the blocked pipelines; injecting a grouting liquid into the drilled hole by means of the grouting pipes or the pipelines; and installing a fixed object on a side wall of the anchoring base body, and installing a nut on the hollow anchoring rod to complete anchoring.
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING OF SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING CO., LTD (Chine)
Inventeur(s)
Liu, Qiaoling
Zhang, Xin
Jia, Liudong
Li, Xiurong
Abrégé
A crack-resistant inorganic adhesive for a bamboo structure and a preparation method therefor, and a preparation method for a recombinant bamboo. A mass ratio of components of the inorganic adhesive is as follows: magnesium oxide:magnesium sulfate heptahydrate:silica fume:silica sol:lithium silicate:sodium silicate:citric acid:microcrystalline cellulose:nanocellulose whisker:redispersible emulsion powder:amino trimethylene phosphonic acid:water=1:(0.2-0.6):(0.01-0.1):(0-0.03):(0-0.02):(0.005-0.03):(0.002-0.02):(0-0.03):(0-0.01):(0-0.002):(0-0.01):(0.2-0.8). According to the technical solution, magnesium oxysulfate is used as a base material, the bonding and permeation performance between the magnesium oxysulfate and a bamboo material is improved by means of a modification technology, and ultrahigh fire resistance and high strength of the magnesium oxysulfide are combined, so that an inorganic adhesive-based recombinant bamboo having high strength and good fire resistance and durability is prepared.
C09J 11/04 - Additifs non macromoléculaires inorganiques
C09J 1/02 - Adhésifs à base de constituants inorganiques contenant des silicates alcalins solubles dans l'eau
C04B 28/30 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments de magnésium
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Abrégé
A method for moving a tall building uphill comprises the following steps: determining a moving start point and a moving end point, digging out the ground from under the building, and exposing a foundation of the building; arranging an inclined linear rail foundation (5) from the moving start point to the moving end point, and laying a steel plate at a top surface of the rail foundation (5); arranging multiple rolling shafts (6) at intervals on the steel plate below the building and corresponding thereto; arranging, at a top portion of the rolling shafts (6), steel channels parallel to an extending direction of the rail foundation (5), and pouring concrete to form underpinning beams (7), wherein the underpinning beams (7) are connected to rebars pre-embedded into vertical pillars of the building and fixedly connected to the building as an integrated piece; cutting connections between the vertical pillars and the foundation of the building; and arranging a drive mechanism at a terminal portion of the rail foundation (5), and driving the building to move from the moving start point to the moving end point. The method for moving is safe and reliable, and prevents buildings from leaning and creating additional internal stress which causes structural damage.
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING, SHANDONG JIANZHU UNIVERSITY (Chine)
SHANDONG JIANGU SPECIAL ENGINEERING LIMIT (Chine)
Inventeur(s)
Jia, Qiang
Zhang, Xin
Abrégé
A displacement inclination rectification method for a building, comprising the following steps: determining a row of framework columns (3) having the minimum settlement amount, and acquiring a settlement difference between another row of framework columns (3) and said row of framework columns (3); digging a foundation, exposing former site bases (1, 2), and arranging new site bases (6); uniformly distributing inclined linear displacement tracks (7, 8) along a displacement direction; arranging a roller (9) and a steel channel on each of the displacement tracks (7, 8), and pouring concrete into the steel channels to form underpinning beams (10, 11), the underpinning beams (10, 11) being fixedly connected as a whole by means of a linking beam (12); horizontally driving sliding blocks by a drive mechanism so as to drive the framework columns (3) to move along the displacement tracks (7, 8) up to a displacement endpoint; and completing the inclination rectification when all the framework columns (3) are at the same horizontal height. The inclination rectification method is safer and better protects a building structure.